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it

I primi 500 indirizzi mac

e2:46:a6:71:ba:af, 1e:ba:17:3a:5d:62, 0e:87:42:d8:b4:40, 06:0d:70:24:71:63, 26:21:4b:36:b0:39, 3a:ef:86:f3:13:13, 86:e5:d4:b7:f3:67, 9a:c3:e2:1a:d1:fc, 62:36:f0:e9:47:b6, 9e:d8:21:ed:b2:23, ea:f2:fc:b2:57:af, 66:02:a5:52:df:13, c2:84:8c:cb:95:16, a6:89:d0:b5:75:01, 86:26:ad:59:f6:4b, 3a:c1:2e:33:2c:f8, c6:43:43:43:e7:e4, fe:e6:f3:4f:47:29, 2a:8c:67:f4:49:ff, 4e:2c:d0:f3:af:07, 22:8b:76:a2:08:0b, 82:f0:e3:d1:27:29, 9a:db:ac:cd:0a:d9, b2:9f:d7:4a:ef:2f, e2:4b:15:62:03:fc, 2a:a1:05:ec:68:cb, 0a:2e:31:52:d3:9c, 96:0d:42:b3:cb:14, 86:0c:4f:ca:d3:96, 16:b4:82:1e:db:2b, 02:96:79:36:d1:91, 76:09:91:7a:1a:f0, 8a:6f:16:41:3b:00, da:a6:f3:3a:2e:e3, 36:28:9f:8c:9a:37, 76:bb:30:4c:24:57, 22:29:12:1f:bd:ff, aa:c1:23:21:9e:15, 5a:53:99:54:19:a5, 66:36:80:aa:52:de, 1a:c3:f8:4a:94:89, 42:31:ef:c1:42:79, 66:1a:8f:95:51:9b, 66:33:bc:52:3b:84, ae:a7:41:3b:55:87, b6:ef:f8:1a:eb:20, a2:83:65:67:8c:b4, 7a:89:65:86:e2:9b, a2:c4:22:9b:17:4f, b6:64:59:b2:21:b0, 8a:07:2a:85:e9:0e, 96:f0:f9:fb:0e:bb, aa:0a:8e:45:72:41, 5a:9d:8a:c4:e6:64, f2:01:49:13:51:ec, 42:58:09:68:2c:76, ba:34:4d:01:d6:60, 5e:93:57:1f:c9:92, 0a:e9:16:6a:92:ea, 02:8d:bb:95:b6:42, 02:11:36:e1:62:33, 8e:6b:68:f2:58:d2, da:49:10:13:11:df, 46:b4:53:ff:ea:89, a2:d4:ce:12:21:98, d2:e5:ea:e1:df:a0, 52:05:0f:e5:e1:61, d6:5c:50:ec:f4:b6, 42:2e:bd:25:5e:ec, c2:54:fc:80:8f:9b, a2:3a:66:e5:a9:20, 2a:29:93:37:c2:e5, 1e:36:5f:ed:3b:4b, d6:1f:5f:6f:da:24, 52:b2:c5:5f:66:9a, 32:f8:21:08:7a:0c, 16:2e:ba:04:7e:58, d2:82:c0:05:07:49, d2:24:77:d8:2f:2e, 12:8c:7b:79:17:f9, 1e:50:ee:34:ef:dd, f2:93:e6:a4:69:54, e2:75:15:0f:41:6e, 16:29:3c:f6:f0:0f, 3e:1b:34:f8:65:2c, 62:eb:9e:8d:0a:40, 5a:cf:df:8f:63:7a, b2:f3:d1:64:a5:9b, 5a:f5:d8:d7:bc:aa, fe:cf:dd:ab:be:df, d2:ae:4a:ef:7f:37, d6:c2:4e:63:8f:81, 02:88:50:71:9e:43, 4e:5c:b5:48:91:1b, d2:14:f2:1c:4d:3e, 92:c9:d0:17:15:04, 1e:dd:48:9e:f5:af, 92:df:b5:9a:6a:79, da:64:17:02:dc:48, de:c8:34:d0:dc:09, 66:21:b4:1f:87:1a, 42:09:3c:b3:c2:91, 46:58:70:86:3d:56, 76:a6:fd:06:f4:5f, a2:65:c7:0d:47:77, 02:69:61:46:26:8c, 6e:b7:36:5d:3c:be, 4a:a1:51:a6:6d:43, aa:f6:d6:fc:50:0c, 2e:b6:14:38:28:da, 52:a6:3f:f1:df:bb, 9a:3e:20:99:bd:0a, 5e:6e:a0:52:56:41, 5a:fc:f1:7e:4d:3f, da:b1:ab:c3:f5:df, 26:f8:29:6e:aa:62, 7a:18:4c:8e:60:a8, 66:2b:4e:58:fa:86, 9a:e2:91:91:4a:8c, a2:d8:7d:ba:aa:84, d2:82:0b:36:fd:2c, 92:9d:83:48:a8:0c, 2e:8f:01:9d:cf:4c, f2:ea:20:6d:cb:68, a6:dc:a6:04:63:f5, 0a:4d:dd:f5:78:0e, 0e:9f:9b:3e:be:ec, 8e:6d:38:e2:ea:c1, 4e:b3:cd:e9:cc:93, 2e:7f:56:5a:8d:fa, 2e:eb:e7:69:9b:a8, a6:74:6d:f5:06:1c, de:4c:e7:97:a8:22, 12:86:f7:bd:ee:f5, 76:08:04:2f:fc:2c, 7e:39:c5:b7:65:ae, 5e:c9:67:64:a9:58, fa:49:2f:20:3e:35, a6:4f:54:40:90:01, de:83:6b:62:6e:cf, d2:f3:7a:6b:2a:15, 3a:49:fd:46:91:5e, 7a:73:31:a0:62:af, 3a:89:80:73:6f:38, e2:44:36:98:f5:63, 52:46:e5:81:2c:bb, 0a:9e:39:54:19:a3, 62:16:82:b5:17:79, 3e:c0:19:17:f5:44, 82:c0:0e:ed:67:c2, c6:5e:f6:48:14:65, 32:23:89:df:00:a9, 32:4c:7d:ba:36:ea, 3a:50:62:0f:67:25, 3e:aa:aa:cc:8e:3d, 86:ec:65:bb:c3:41, ca:9b:22:2b:b1:b5, f2:1f:c7:60:e5:7d, d6:86:29:0c:f4:5a, 16:98:0c:84:8f:04, c6:58:bf:24:5f:af, 22:59:af:4a:88:61, 4e:82:48:df:59:64, 8a:8a:ee:22:10:3d, 66:25:06:f4:ab:1e, 1e:27:d2:52:3a:0b, 36:cb:44:32:a3:fb, 62:17:75:ab:74:93, 16:3c:40:48:2b:0c, 5e:59:96:e6:6e:ef, 2e:b6:aa:6b:a6:a5, 1a:9f:95:73:2d:59, 2a:f9:3f:85:4f:2d, ae:bf:fc:52:fc:32, c2:45:e4:ea:f4:98, 96:62:cf:5e:a9:26, 66:91:a4:87:c1:86, 8a:c2:1a:5b:61:0b, f2:56:79:11:31:1f, 1e:10:7a:26:77:ad, 22:d6:3f:3d:90:6f, da:95:bc:75:21:bb, 7e:95:78:50:3f:59, be:7a:72:82:11:af, 46:6d:2c:10:77:b4, d6:4c:c6:a3:ca:7b, 8a:da:bf:86:5c:72, e2:a9:94:7d:1c:a7, 0e:7d:88:a4:02:97, 1a:a7:1f:04:c5:bb, 9e:c1:e7:43:26:d9, de:58:aa:1d:e1:a6, 4e:38:0f:25:0e:f3, 7e:ac:0a:35:8a:2d, 6e:26:2b:94:2b:43, 4e:5b:a6:bc:05:a1, d2:f3:db:54:ca:e2, 1a:d5:dc:bc:ef:05, 4a:39:69:13:d2:5a, 72:dc:02:70:16:21, d6:76:2a:66:8a:c5, d2:12:e4:d5:cb:0c, 26:5f:97:7b:ed:45, 1e:82:30:4c:1b:4e, 12:92:e6:0f:e7:a6, 36:ca:3c:01:57:f4, 0e:ad:1f:2b:9f:1f, ba:b0:f9:d6:43:b5, 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f2:ed:ec:33:59:2e, 16:41:97:cf:92:42, b6:9f:cd:fa:85:e1, 92:02:fe:91:64:d3, 52:34:42:99:39:bf, 36:de:50:c5:de:d6, a6:d0:d5:44:ac:58, 6a:ae:38:9d:d1:a5, 2a:49:d4:29:55:d9, f2:a9:2c:b4:91:10, c6:4c:83:a7:ca:a4, 42:33:32:f4:f1:43, 16:9d:a5:2f:6f:3c, e2:03:fd:3d:c4:52, 02:bc:ae:fa:e1:80, d6:9b:08:18:e3:54, a2:8a:3a:b7:56:a6, 3e:c8:09:e4:21:01, f2:4f:20:09:9e:cd, b2:53:b1:34:b3:27, 52:a2:16:9d:8a:59, 4a:7b:89:da:05:18, da:3d:f7:ff:91:58, 22:c7:71:7e:7a:59, a6:34:b0:e9:e5:c1, a2:aa:1b:c3:cd:db, f2:1a:86:76:b6:a1, ee:25:e8:99:f0:ee, 62:af:7b:08:1a:b3, 2a:d0:6a:c4:04:c1, 06:c0:2a:36:96:76, 16:9f:d9:4b:a1:ae, 22:af:71:64:e4:9f, 1a:ac:fc:a1:9e:86, c6:ba:87:3e:fa:ed, 32:7a:0b:de:ca:9c, 62:2f:a4:d9:6a:20, f2:02:c6:f0:e1:a8, 1e:b9:d4:c9:68:5f, 9a:fe:5c:6a:e2:cd, b2:62:6f:9a:48:c3, 76:0f:67:49:f0:b2, f6:d9:1e:92:d4:5c, 86:c4:85:60:fc:5e, c6:65:9d:c7:40:0a, 7a:1e:04:11:29:91, a2:cc:f2:9a:ef:2b, 76:8d:42:c4:44:29, aa:a1:23:0e:d3:06, de:9c:c5:b8:45:f2, 0a:38:7a:4d:eb:05, e2:0c:fe:09:93:44, 9a:20:24:46:87:f9, 86:16:c5:e9:1f:f6, 7a:ed:de:9a:33:a5, c6:d5:0f:89:ba:63, 42:96:15:ea:ab:ad, 1e:69:fb:50:4d:7b, a6:b7:56:97:74:0c, 8e:3b:f9:23:65:28, be:37:da:08:b6:b5, 0e:36:bc:65:c7:32, 02:fa:9f:13:bc:89, 5e:71:f2:d8:78:c7, 0e:3f:b4:f2:e8:84, 72:a0:43:d2:7f:2d, ce:6e:42:a8:bb:b8, 66:57:e2:e3:95:1d, 12:ff:88:5a:6f:05, ea:74:65:0c:36:41, 4e:52:5b:69:f8:b8, 4e:eb:bf:cf:66:65, e2:39:97:77:1d:96, 02:41:e7:4c:18:5b, 12:a5:6f:0d:dd:56, e2:a5:fe:85:17:db, 0e:a2:70:5c:67:9d, ce:7d:fc:ff:67:9e, 2a:95:5a:67:c4:f2, 1e:e4:30:5d:81:c0, 7e:41:5c:a0:5b:ed, 36:54:d6:95:79:4a, 5a:44:4b:4f:c8:c2, f6:41:ce:c3:7e:7d, b6:a5:62:8a:31:89, c6:54:2d:97:6f:88, c6:9b:0b:d9:b2:21, 86:e2:36:3f:7d:36, 6e:0d:87:79:73:5b, 3e:d9:e1:80:53:32, 3a:8f:29:4d:dd:81, be:c2:cd:2b:28:e1, 6e:56:be:f6:c1:27, 96:87:cf:22:90:b0, 2e:3e:ad:78:76:b4, 5e:6a:c2:fd:f5:23, 1a:48:f1:fb:75:c2, d2:19:95:33:f6:b3, ce:db:d1:28:87:38, 7a:a0:81:51:f1:76, 1a:27:98:8d:1c:c7, 6e:0d:81:1c:c5:32, c2:d7:ca:dc:44:af, 42:82:35:4e:f8:54, 72:67:e1:fd:71:ad, 1a:f9:a5:e0:b5:5a, 0a:c0:60:71:a6:a5, a6:fd:79:06:1a:85, 6a:7e:ff:ec:2f:cd, 46:38:fe:c7:28:54, 4a:16:a1:be:b1:6a, ba:a4:bf:3a:cd:61, fa:70:b2:6f:ac:f6, 46:ae:a6:47:73:8f, e6:89:3e:93:73:2f, 3a:fc:fd:b7:27:fa, 86:fd:d2:f3:2d:2a, ae:78:5a:e9:eb:ce, 3a:a7:c6:4f:11:d6, fe:5d:a0:0b:1f:46, e6:18:40:8a:41:10, 42:5e:ab:68:84:07, da:8b:71:43:70:90, 42:68:f3:79:5b:b4, 4e:c8:e2:88:57:cc, ba:8e:6e:e6:d8:69, d6:7b:f5:5c:ad:eb, d6:75:c5:88:53:fc, ae:7c:0a:e5:b5:d2, a6:26:49:e7:9d:2f, de:fc:04:71:3b:65, fa:9b:c0:22:50:6a, 3a:bd:64:99:cb:d2, 92:72:02:60:b7:93, 0a:f7:7f:6a:f7:db, 16:23:b7:7f:74:4e, b6:ac:81:45:33:8d, ee:e5:39:9f:86:ee, 26:66:34:05:56:4a, 2a:23:40:2e:16:85, a2:e0:1b:66:4b:2a, fa:21:a7:72:e3:29, c2:4f:eb:06:32:37, 06:24:e9:e7:2e:be, 8a:c2:c9:35:d6:1c, 1e:78:1b:5d:22:c1, da:70:bd:d5:26:ba, aa:cf:46:5b:5e:28, 42:a8:e3:a6:87:8a, 9a:53:29:4e:78:9c, 52:bf:86:f3:19:d3, da:73:bc:a6:b0:cb, 4e:90:09:61:8d:25, c2:bf:40:54:79:56, 9e:a5:f3:d4:82:05, 0e:2a:33:a1:8f:cb, ce:d0:b4:02:c1:92, 92:4d:a0:62:da:10, 36:f7:e9:5f:6f:8e, ae:ae:7a:2b:ce:a3, f2:25:f9:f3:d9:43, 42:83:43:f1:37:45, 2a:2f:30:07:3d:a1, 3a:f1:1f:c5:5d:02, ca:f4:61:2f:11:fd, 66:35:82:3e:74:d0, 86:41:c2:e8:74:d3, b6:ea:bb:dd:d4:85, 56:1f:71:59:8e:e1, 52:5b:eb:a5:17:9b, ae:08:fd:6d:5f:4c, 82:0f:d9:64:98:f4, 56:8a:41:ec:c2:ba, de:88:8c:96:9f:29, 9a:44:ba:4d:8c:38, 2e:6d:54:dd:85:33, 72:84:65:31:d2:7d, e2:bc:89:af:9f:51, 8e:dc:3c:fa:6d:f5, ea:7f:28:d5:28:e2, 22:7b:16:f1:c2:75, 56:13:43:4e:ed:1b, c2:dc:ed:56:12:04, aa:c5:37:66:10:cb, 02:d4:c0:a1:92:33, 62:9e:59:b4:94:6f, e6:02:82:3e:6a:95, 7a:e7:be:27:39:f7, 2e:4f:c7:09:cf:28, 6e:46:5f:1f:fb:fd, ba:2e:e5:fb:01:f0, b6:79:a9:1d:a9:27, a2:b9:f3:42:fa:46, 3a:f5:68:91:44:fe, a6:57:27:66:1d:69, 6e:29:29:50:c9:c8, 42:1d:61:b7:05:87, a2:ba:31:fd:bc:23, ae:00:04:ab:50:08, 4e:72:42:c5:57:39, 96:80:7c:c2:b5:0c, de:1e:4c:ed:09:fd, 42:fa:6a:15:01:54, 1a:77:31:b0:c5:57, ba:9c:00:f8:f4:b4, c2:d4:3e:31:7a:b7, 4e:10:cb:b4:2c:7f, 72:53:19:1f:4b:40, be:72:f6:fd:17:6f, 32:b4:93:14:a8:c2, 46:32:5e:9b:e3:c5, da:ab:f7:b9:2e:a0, 8e:40:a4:fe:2b:9a, 3e:c6:df:9f:af:37, 5a:41:72:99:53:c7, c6:04:08:cd:5c:8c, aa:88:c3:38:6b:42, 9a:ab:84:6d:63:86, da:36:06:70:e6:e7, 1a:b0:0f:8d:ee:9c, 5a:fb:26:b0:63:81, be:73:66:53:fd:a5, 46:97:0f:3e:7e:00, 5a:a7:4a:2c:d2:46, 9e:5a:bc:14:e3:c4, e6:98:3c:61:e5:fb, d2:5d:dc:8b:8b:96, 9a:c4:59:99:99:3d, c2:ea:d4:31:7e:1b, 4a:d8:e3:89:c9:27, ae:7a:c2:fb:3d:49, 0e:8b:22:fb:18:eb, 5a:b7:82:2d:9c:02, ba:d5:6f:73:f3:16, d2:df:cc:1a:0a:e8, 2a:f7:c8:aa:84:12, ea:76:33:a1:2c:7c, 7e:83:70:f3:2e:03, aa:89:d6:b4:cd:6f, 42:94:fc:c7:54:12

The first octet has the 0x02 bit set and the 0x01 bit clear, so every address is a locally administered unicast address — second hex digit 2, 6, A or E. The IEEE does not issue blocks with that bit set, so none of these can belong to a vendor.

Impostazioni

Preimpostazioni rapide

Addresses are distinct within a list.

Locally administered addresses have the 0x02 bit of the first octet set. The IEEE never issues a block with that bit set, so these cannot belong to a vendor.

Six hex digits — separators optional — to pin the first three octets, for simulating a fleet from one vendor. Used exactly as given, so the address type setting no longer applies to it.

The same seed always produces the same addresses, so a shared link and a checked-in fixture file agree.

Rifinisci l’aspetto

Scegli prima una preimpostazione accanto all’immagine: questi controlli la regolano.

Frame

A border drawn inside the edge of the image.

Avanzate

Risultati

500 valori

e2:46:a6:71:ba:af, 1e:ba:17:3a:5d:62, 0e:87:42:d8:b4:40, 06:0d:70:24:71:63, 26:21:4b:36:b0:39, 3a:ef:86:f3:13:13, 86:e5:d4:b7:f3:67, 9a:c3:e2:1a:d1:fc, 62:36:f0:e9:47:b6, 9e:d8:21:ed:b2:23, ea:f2:fc:b2:57:af, 66:02:a5:52:df:13, c2:84:8c:cb:95:16, a6:89:d0:b5:75:01, 86:26:ad:59:f6:4b, 3a:c1:2e:33:2c:f8, c6:43:43:43:e7:e4, fe:e6:f3:4f:47:29, 2a:8c:67:f4:49:ff, 4e:2c:d0:f3:af:07, 22:8b:76:a2:08:0b, 82:f0:e3:d1:27:29, 9a:db:ac:cd:0a:d9, b2:9f:d7:4a:ef:2f, e2:4b:15:62:03:fc, 2a:a1:05:ec:68:cb, 0a:2e:31:52:d3:9c, 96:0d:42:b3:cb:14, 86:0c:4f:ca:d3:96, 16:b4:82:1e:db:2b, 02:96:79:36:d1:91, 76:09:91:7a:1a:f0, 8a:6f:16:41:3b:00, da:a6:f3:3a:2e:e3, 36:28:9f:8c:9a:37, 76:bb:30:4c:24:57, 22:29:12:1f:bd:ff, aa:c1:23:21:9e:15, 5a:53:99:54:19:a5, 66:36:80:aa:52:de, 1a:c3:f8:4a:94:89, 42:31:ef:c1:42:79, 66:1a:8f:95:51:9b, 66:33:bc:52:3b:84, ae:a7:41:3b:55:87, b6:ef:f8:1a:eb:20, a2:83:65:67:8c:b4, 7a:89:65:86:e2:9b, a2:c4:22:9b:17:4f, b6:64:59:b2:21:b0, 8a:07:2a:85:e9:0e, 96:f0:f9:fb:0e:bb, aa:0a:8e:45:72:41, 5a:9d:8a:c4:e6:64, f2:01:49:13:51:ec, 42:58:09:68:2c:76, ba:34:4d:01:d6:60, 5e:93:57:1f:c9:92, 0a:e9:16:6a:92:ea, 02:8d:bb:95:b6:42, 02:11:36:e1:62:33, 8e:6b:68:f2:58:d2, da:49:10:13:11:df, 46:b4:53:ff:ea:89, a2:d4:ce:12:21:98, d2:e5:ea:e1:df:a0, 52:05:0f:e5:e1:61, d6:5c:50:ec:f4:b6, 42:2e:bd:25:5e:ec, c2:54:fc:80:8f:9b, a2:3a:66:e5:a9:20, 2a:29:93:37:c2:e5, 1e:36:5f:ed:3b:4b, d6:1f:5f:6f:da:24, 52:b2:c5:5f:66:9a, 32:f8:21:08:7a:0c, 16:2e:ba:04:7e:58, d2:82:c0:05:07:49, d2:24:77:d8:2f:2e, 12:8c:7b:79:17:f9, 1e:50:ee:34:ef:dd, f2:93:e6:a4:69:54, e2:75:15:0f:41:6e, 16:29:3c:f6:f0:0f, 3e:1b:34:f8:65:2c, 62:eb:9e:8d:0a:40, 5a:cf:df:8f:63:7a, b2:f3:d1:64:a5:9b, 5a:f5:d8:d7:bc:aa, fe:cf:dd:ab:be:df, d2:ae:4a:ef:7f:37, d6:c2:4e:63:8f:81, 02:88:50:71:9e:43, 4e:5c:b5:48:91:1b, d2:14:f2:1c:4d:3e, 92:c9:d0:17:15:04, 1e:dd:48:9e:f5:af, 92:df:b5:9a:6a:79, da:64:17:02:dc:48, de:c8:34:d0:dc:09, 66:21:b4:1f:87:1a, 42:09:3c:b3:c2:91, 46:58:70:86:3d:56, 76:a6:fd:06:f4:5f, a2:65:c7:0d:47:77, 02:69:61:46:26:8c, 6e:b7:36:5d:3c:be, 4a:a1:51:a6:6d:43, aa:f6:d6:fc:50:0c, 2e:b6:14:38:28:da, 52:a6:3f:f1:df:bb, 9a:3e:20:99:bd:0a, 5e:6e:a0:52:56:41, 5a:fc:f1:7e:4d:3f, da:b1:ab:c3:f5:df, 26:f8:29:6e:aa:62, 7a:18:4c:8e:60:a8, 66:2b:4e:58:fa:86, 9a:e2:91:91:4a:8c, a2:d8:7d:ba:aa:84, d2:82:0b:36:fd:2c, 92:9d:83:48:a8:0c, 2e:8f:01:9d:cf:4c, f2:ea:20:6d:cb:68, a6:dc:a6:04:63:f5, 0a:4d:dd:f5:78:0e, 0e:9f:9b:3e:be:ec, 8e:6d:38:e2:ea:c1, 4e:b3:cd:e9:cc:93, 2e:7f:56:5a:8d:fa, 2e:eb:e7:69:9b:a8, a6:74:6d:f5:06:1c, de:4c:e7:97:a8:22, 12:86:f7:bd:ee:f5, 76:08:04:2f:fc:2c, 7e:39:c5:b7:65:ae, 5e:c9:67:64:a9:58, fa:49:2f:20:3e:35, a6:4f:54:40:90:01, de:83:6b:62:6e:cf, d2:f3:7a:6b:2a:15, 3a:49:fd:46:91:5e, 7a:73:31:a0:62:af, 3a:89:80:73:6f:38, e2:44:36:98:f5:63, 52:46:e5:81:2c:bb, 0a:9e:39:54:19:a3, 62:16:82:b5:17:79, 3e:c0:19:17:f5:44, 82:c0:0e:ed:67:c2, c6:5e:f6:48:14:65, 32:23:89:df:00:a9, 32:4c:7d:ba:36:ea, 3a:50:62:0f:67:25, 3e:aa:aa:cc:8e:3d, 86:ec:65:bb:c3:41, ca:9b:22:2b:b1:b5, f2:1f:c7:60:e5:7d, d6:86:29:0c:f4:5a, 16:98:0c:84:8f:04, c6:58:bf:24:5f:af, 22:59:af:4a:88:61, 4e:82:48:df:59:64, 8a:8a:ee:22:10:3d, 66:25:06:f4:ab:1e, 1e:27:d2:52:3a:0b, 36:cb:44:32:a3:fb, 62:17:75:ab:74:93, 16:3c:40:48:2b:0c, 5e:59:96:e6:6e:ef, 2e:b6:aa:6b:a6:a5, 1a:9f:95:73:2d:59, 2a:f9:3f:85:4f:2d, ae:bf:fc:52:fc:32, c2:45:e4:ea:f4:98, 96:62:cf:5e:a9:26, 66:91:a4:87:c1:86, 8a:c2:1a:5b:61:0b, f2:56:79:11:31:1f, 1e:10:7a:26:77:ad, 22:d6:3f:3d:90:6f, da:95:bc:75:21:bb, 7e:95:78:50:3f:59, be:7a:72:82:11:af, 46:6d:2c:10:77:b4, d6:4c:c6:a3:ca:7b, 8a:da:bf:86:5c:72, e2:a9:94:7d:1c:a7, 0e:7d:88:a4:02:97, 1a:a7:1f:04:c5:bb, 9e:c1:e7:43:26:d9, de:58:aa:1d:e1:a6, 4e:38:0f:25:0e:f3, 7e:ac:0a:35:8a:2d, 6e:26:2b:94:2b:43, 4e:5b:a6:bc:05:a1, d2:f3:db:54:ca:e2, 1a:d5:dc:bc:ef:05, 4a:39:69:13:d2:5a, 72:dc:02:70:16:21, d6:76:2a:66:8a:c5, d2:12:e4:d5:cb:0c, 26:5f:97:7b:ed:45, 1e:82:30:4c:1b:4e, 12:92:e6:0f:e7:a6, 36:ca:3c:01:57:f4, 0e:ad:1f:2b:9f:1f, ba:b0:f9:d6:43:b5, 6e:12:df:45:3b:70, 8a:80:c7:1e:a1:33, 46:f1:41:8b:a8:52, 02:71:4e:62:f4:8e, 3a:9b:08:57:1e:a6, 0e:c2:72:04:a8:5b, 86:d2:64:cb:95:48, de:fd:4f:9d:61:c8, 5a:07:8c:fd:8f:36, fa:31:de:21:04:7e, f6:a4:db:1e:cf:9a, b2:f1:fd:d8:10:d6, 06:ea:95:9d:01:fc, c6:35:5e:b9:16:cf, e2:de:28:1e:90:8c, 62:8b:6a:b1:60:71, 5a:f1:68:dd:6b:5e, 66:2b:e2:8a:11:83, d6:92:65:78:43:47, 12:ea:ea:c6:8b:73, 46:ef:17:67:c6:f4, ea:37:68:dd:4f:b9, 66:d0:a5:23:5a:db, 6e:a3:a1:fe:c4:3b, da:64:1f:a8:87:b4, 0a:87:4b:f8:14:64, f2:a1:74:1e:93:cb, 6e:e0:53:10:85:20, 42:98:60:e9:f9:95, 1a:03:0f:f4:34:1a, 1a:8c:38:f2:a1:b8, 32:b1:bf:08:d5:ac, de:00:86:d4:90:8d, de:dc:9d:7a:92:21, c6:4d:76:6f:ae:26, 72:ca:d2:3c:e5:48, ea:ae:23:7e:8c:8c, 0a:0f:72:11:2d:7d, 82:e4:38:ef:a9:51, ee:39:fb:ce:00:c3, 52:1f:ef:28:e2:26, 96:2b:c2:1c:78:0c, 52:89:a0:17:3f:6e, 56:ea:b8:0c:cd:3b, 9a:d1:eb:f3:bf:0e, f6:52:7c:47:91:a8, 4a:28:b0:8a:11:4f, 62:62:71:60:6b:01, 7e:fd:48:9b:0b:40, 1e:c0:aa:ee:3f:8c, 5e:6e:9b:d1:b7:49, 76:0f:f8:c8:21:8b, f2:ed:ec:33:59:2e, 16:41:97:cf:92:42, b6:9f:cd:fa:85:e1, 92:02:fe:91:64:d3, 52:34:42:99:39:bf, 36:de:50:c5:de:d6, a6:d0:d5:44:ac:58, 6a:ae:38:9d:d1:a5, 2a:49:d4:29:55:d9, f2:a9:2c:b4:91:10, c6:4c:83:a7:ca:a4, 42:33:32:f4:f1:43, 16:9d:a5:2f:6f:3c, e2:03:fd:3d:c4:52, 02:bc:ae:fa:e1:80, d6:9b:08:18:e3:54, a2:8a:3a:b7:56:a6, 3e:c8:09:e4:21:01, f2:4f:20:09:9e:cd, b2:53:b1:34:b3:27, 52:a2:16:9d:8a:59, 4a:7b:89:da:05:18, da:3d:f7:ff:91:58, 22:c7:71:7e:7a:59, a6:34:b0:e9:e5:c1, a2:aa:1b:c3:cd:db, f2:1a:86:76:b6:a1, ee:25:e8:99:f0:ee, 62:af:7b:08:1a:b3, 2a:d0:6a:c4:04:c1, 06:c0:2a:36:96:76, 16:9f:d9:4b:a1:ae, 22:af:71:64:e4:9f, 1a:ac:fc:a1:9e:86, c6:ba:87:3e:fa:ed, 32:7a:0b:de:ca:9c, 62:2f:a4:d9:6a:20, f2:02:c6:f0:e1:a8, 1e:b9:d4:c9:68:5f, 9a:fe:5c:6a:e2:cd, b2:62:6f:9a:48:c3, 76:0f:67:49:f0:b2, f6:d9:1e:92:d4:5c, 86:c4:85:60:fc:5e, c6:65:9d:c7:40:0a, 7a:1e:04:11:29:91, a2:cc:f2:9a:ef:2b, 76:8d:42:c4:44:29, aa:a1:23:0e:d3:06, de:9c:c5:b8:45:f2, 0a:38:7a:4d:eb:05, e2:0c:fe:09:93:44, 9a:20:24:46:87:f9, 86:16:c5:e9:1f:f6, 7a:ed:de:9a:33:a5, c6:d5:0f:89:ba:63, 42:96:15:ea:ab:ad, 1e:69:fb:50:4d:7b, a6:b7:56:97:74:0c, 8e:3b:f9:23:65:28, be:37:da:08:b6:b5, 0e:36:bc:65:c7:32, 02:fa:9f:13:bc:89, 5e:71:f2:d8:78:c7, 0e:3f:b4:f2:e8:84, 72:a0:43:d2:7f:2d, ce:6e:42:a8:bb:b8, 66:57:e2:e3:95:1d, 12:ff:88:5a:6f:05, ea:74:65:0c:36:41, 4e:52:5b:69:f8:b8, 4e:eb:bf:cf:66:65, e2:39:97:77:1d:96, 02:41:e7:4c:18:5b, 12:a5:6f:0d:dd:56, e2:a5:fe:85:17:db, 0e:a2:70:5c:67:9d, ce:7d:fc:ff:67:9e, 2a:95:5a:67:c4:f2, 1e:e4:30:5d:81:c0, 7e:41:5c:a0:5b:ed, 36:54:d6:95:79:4a, 5a:44:4b:4f:c8:c2, f6:41:ce:c3:7e:7d, b6:a5:62:8a:31:89, c6:54:2d:97:6f:88, c6:9b:0b:d9:b2:21, 86:e2:36:3f:7d:36, 6e:0d:87:79:73:5b, 3e:d9:e1:80:53:32, 3a:8f:29:4d:dd:81, be:c2:cd:2b:28:e1, 6e:56:be:f6:c1:27, 96:87:cf:22:90:b0, 2e:3e:ad:78:76:b4, 5e:6a:c2:fd:f5:23, 1a:48:f1:fb:75:c2, d2:19:95:33:f6:b3, ce:db:d1:28:87:38, 7a:a0:81:51:f1:76, 1a:27:98:8d:1c:c7, 6e:0d:81:1c:c5:32, c2:d7:ca:dc:44:af, 42:82:35:4e:f8:54, 72:67:e1:fd:71:ad, 1a:f9:a5:e0:b5:5a, 0a:c0:60:71:a6:a5, a6:fd:79:06:1a:85, 6a:7e:ff:ec:2f:cd, 46:38:fe:c7:28:54, 4a:16:a1:be:b1:6a, ba:a4:bf:3a:cd:61, fa:70:b2:6f:ac:f6, 46:ae:a6:47:73:8f, e6:89:3e:93:73:2f, 3a:fc:fd:b7:27:fa, 86:fd:d2:f3:2d:2a, ae:78:5a:e9:eb:ce, 3a:a7:c6:4f:11:d6, fe:5d:a0:0b:1f:46, e6:18:40:8a:41:10, 42:5e:ab:68:84:07, da:8b:71:43:70:90, 42:68:f3:79:5b:b4, 4e:c8:e2:88:57:cc, ba:8e:6e:e6:d8:69, d6:7b:f5:5c:ad:eb, d6:75:c5:88:53:fc, ae:7c:0a:e5:b5:d2, a6:26:49:e7:9d:2f, de:fc:04:71:3b:65, fa:9b:c0:22:50:6a, 3a:bd:64:99:cb:d2, 92:72:02:60:b7:93, 0a:f7:7f:6a:f7:db, 16:23:b7:7f:74:4e, b6:ac:81:45:33:8d, ee:e5:39:9f:86:ee, 26:66:34:05:56:4a, 2a:23:40:2e:16:85, a2:e0:1b:66:4b:2a, fa:21:a7:72:e3:29, c2:4f:eb:06:32:37, 06:24:e9:e7:2e:be, 8a:c2:c9:35:d6:1c, 1e:78:1b:5d:22:c1, da:70:bd:d5:26:ba, aa:cf:46:5b:5e:28, 42:a8:e3:a6:87:8a, 9a:53:29:4e:78:9c, 52:bf:86:f3:19:d3, da:73:bc:a6:b0:cb, 4e:90:09:61:8d:25, c2:bf:40:54:79:56, 9e:a5:f3:d4:82:05, 0e:2a:33:a1:8f:cb, ce:d0:b4:02:c1:92, 92:4d:a0:62:da:10, 36:f7:e9:5f:6f:8e, ae:ae:7a:2b:ce:a3, f2:25:f9:f3:d9:43, 42:83:43:f1:37:45, 2a:2f:30:07:3d:a1, 3a:f1:1f:c5:5d:02, ca:f4:61:2f:11:fd, 66:35:82:3e:74:d0, 86:41:c2:e8:74:d3, b6:ea:bb:dd:d4:85, 56:1f:71:59:8e:e1, 52:5b:eb:a5:17:9b, ae:08:fd:6d:5f:4c, 82:0f:d9:64:98:f4, 56:8a:41:ec:c2:ba, de:88:8c:96:9f:29, 9a:44:ba:4d:8c:38, 2e:6d:54:dd:85:33, 72:84:65:31:d2:7d, e2:bc:89:af:9f:51, 8e:dc:3c:fa:6d:f5, ea:7f:28:d5:28:e2, 22:7b:16:f1:c2:75, 56:13:43:4e:ed:1b, c2:dc:ed:56:12:04, aa:c5:37:66:10:cb, 02:d4:c0:a1:92:33, 62:9e:59:b4:94:6f, e6:02:82:3e:6a:95, 7a:e7:be:27:39:f7, 2e:4f:c7:09:cf:28, 6e:46:5f:1f:fb:fd, ba:2e:e5:fb:01:f0, b6:79:a9:1d:a9:27, a2:b9:f3:42:fa:46, 3a:f5:68:91:44:fe, a6:57:27:66:1d:69, 6e:29:29:50:c9:c8, 42:1d:61:b7:05:87, a2:ba:31:fd:bc:23, ae:00:04:ab:50:08, 4e:72:42:c5:57:39, 96:80:7c:c2:b5:0c, de:1e:4c:ed:09:fd, 42:fa:6a:15:01:54, 1a:77:31:b0:c5:57, ba:9c:00:f8:f4:b4, c2:d4:3e:31:7a:b7, 4e:10:cb:b4:2c:7f, 72:53:19:1f:4b:40, be:72:f6:fd:17:6f, 32:b4:93:14:a8:c2, 46:32:5e:9b:e3:c5, da:ab:f7:b9:2e:a0, 8e:40:a4:fe:2b:9a, 3e:c6:df:9f:af:37, 5a:41:72:99:53:c7, c6:04:08:cd:5c:8c, aa:88:c3:38:6b:42, 9a:ab:84:6d:63:86, da:36:06:70:e6:e7, 1a:b0:0f:8d:ee:9c, 5a:fb:26:b0:63:81, be:73:66:53:fd:a5, 46:97:0f:3e:7e:00, 5a:a7:4a:2c:d2:46, 9e:5a:bc:14:e3:c4, e6:98:3c:61:e5:fb, d2:5d:dc:8b:8b:96, 9a:c4:59:99:99:3d, c2:ea:d4:31:7e:1b, 4a:d8:e3:89:c9:27, ae:7a:c2:fb:3d:49, 0e:8b:22:fb:18:eb, 5a:b7:82:2d:9c:02, ba:d5:6f:73:f3:16, d2:df:cc:1a:0a:e8, 2a:f7:c8:aa:84:12, ea:76:33:a1:2c:7c, 7e:83:70:f3:2e:03, aa:89:d6:b4:cd:6f, 42:94:fc:c7:54:12

The first octet has the 0x02 bit set and the 0x01 bit clear, so every address is a locally administered unicast address — second hex digit 2, 6, A or E. The IEEE does not issue blocks with that bit set, so none of these can belong to a vendor.

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Quali sono i primi 500 indirizzi mac?

I primi 500 indirizzi mac sono:

e2:46:a6:71:ba:af, 1e:ba:17:3a:5d:62, 0e:87:42:d8:b4:40, 06:0d:70:24:71:63, 26:21:4b:36:b0:39, 3a:ef:86:f3:13:13, 86:e5:d4:b7:f3:67, 9a:c3:e2:1a:d1:fc, 62:36:f0:e9:47:b6, 9e:d8:21:ed:b2:23, ea:f2:fc:b2:57:af, 66:02:a5:52:df:13, c2:84:8c:cb:95:16, a6:89:d0:b5:75:01, 86:26:ad:59:f6:4b, 3a:c1:2e:33:2c:f8, c6:43:43:43:e7:e4, fe:e6:f3:4f:47:29, 2a:8c:67:f4:49:ff, 4e:2c:d0:f3:af:07, 22:8b:76:a2:08:0b, 82:f0:e3:d1:27:29, 9a:db:ac:cd:0a:d9, b2:9f:d7:4a:ef:2f, e2:4b:15:62:03:fc, 2a:a1:05:ec:68:cb, 0a:2e:31:52:d3:9c, 96:0d:42:b3:cb:14, 86:0c:4f:ca:d3:96, 16:b4:82:1e:db:2b, 02:96:79:36:d1:91, 76:09:91:7a:1a:f0, 8a:6f:16:41:3b:00, da:a6:f3:3a:2e:e3, 36:28:9f:8c:9a:37, 76:bb:30:4c:24:57, 22:29:12:1f:bd:ff, aa:c1:23:21:9e:15, 5a:53:99:54:19:a5, 66:36:80:aa:52:de, 1a:c3:f8:4a:94:89, 42:31:ef:c1:42:79, 66:1a:8f:95:51:9b, 66:33:bc:52:3b:84, ae:a7:41:3b:55:87, b6:ef:f8:1a:eb:20, a2:83:65:67:8c:b4, 7a:89:65:86:e2:9b, a2:c4:22:9b:17:4f, b6:64:59:b2:21:b0, 8a:07:2a:85:e9:0e, 96:f0:f9:fb:0e:bb, aa:0a:8e:45:72:41, 5a:9d:8a:c4:e6:64, f2:01:49:13:51:ec, 42:58:09:68:2c:76, ba:34:4d:01:d6:60, 5e:93:57:1f:c9:92, 0a:e9:16:6a:92:ea, 02:8d:bb:95:b6:42, 02:11:36:e1:62:33, 8e:6b:68:f2:58:d2, da:49:10:13:11:df, 46:b4:53:ff:ea:89, a2:d4:ce:12:21:98, d2:e5:ea:e1:df:a0, 52:05:0f:e5:e1:61, d6:5c:50:ec:f4:b6, 42:2e:bd:25:5e:ec, c2:54:fc:80:8f:9b, a2:3a:66:e5:a9:20, 2a:29:93:37:c2:e5, 1e:36:5f:ed:3b:4b, d6:1f:5f:6f:da:24, 52:b2:c5:5f:66:9a, 32:f8:21:08:7a:0c, 16:2e:ba:04:7e:58, d2:82:c0:05:07:49, d2:24:77:d8:2f:2e, 12:8c:7b:79:17:f9, 1e:50:ee:34:ef:dd, f2:93:e6:a4:69:54, e2:75:15:0f:41:6e, 16:29:3c:f6:f0:0f, 3e:1b:34:f8:65:2c, 62:eb:9e:8d:0a:40, 5a:cf:df:8f:63:7a, b2:f3:d1:64:a5:9b, 5a:f5:d8:d7:bc:aa, fe:cf:dd:ab:be:df, d2:ae:4a:ef:7f:37, d6:c2:4e:63:8f:81, 02:88:50:71:9e:43, 4e:5c:b5:48:91:1b, d2:14:f2:1c:4d:3e, 92:c9:d0:17:15:04, 1e:dd:48:9e:f5:af, 92:df:b5:9a:6a:79, da:64:17:02:dc:48, de:c8:34:d0:dc:09, 66:21:b4:1f:87:1a, 42:09:3c:b3:c2:91, 46:58:70:86:3d:56, 76:a6:fd:06:f4:5f, 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ca:9b:22:2b:b1:b5, f2:1f:c7:60:e5:7d, d6:86:29:0c:f4:5a, 16:98:0c:84:8f:04, c6:58:bf:24:5f:af, 22:59:af:4a:88:61, 4e:82:48:df:59:64, 8a:8a:ee:22:10:3d, 66:25:06:f4:ab:1e, 1e:27:d2:52:3a:0b, 36:cb:44:32:a3:fb, 62:17:75:ab:74:93, 16:3c:40:48:2b:0c, 5e:59:96:e6:6e:ef, 2e:b6:aa:6b:a6:a5, 1a:9f:95:73:2d:59, 2a:f9:3f:85:4f:2d, ae:bf:fc:52:fc:32, c2:45:e4:ea:f4:98, 96:62:cf:5e:a9:26, 66:91:a4:87:c1:86, 8a:c2:1a:5b:61:0b, f2:56:79:11:31:1f, 1e:10:7a:26:77:ad, 22:d6:3f:3d:90:6f, da:95:bc:75:21:bb, 7e:95:78:50:3f:59, be:7a:72:82:11:af, 46:6d:2c:10:77:b4, d6:4c:c6:a3:ca:7b, 8a:da:bf:86:5c:72, e2:a9:94:7d:1c:a7, 0e:7d:88:a4:02:97, 1a:a7:1f:04:c5:bb, 9e:c1:e7:43:26:d9, de:58:aa:1d:e1:a6, 4e:38:0f:25:0e:f3, 7e:ac:0a:35:8a:2d, 6e:26:2b:94:2b:43, 4e:5b:a6:bc:05:a1, d2:f3:db:54:ca:e2, 1a:d5:dc:bc:ef:05, 4a:39:69:13:d2:5a, 72:dc:02:70:16:21, d6:76:2a:66:8a:c5, d2:12:e4:d5:cb:0c, 26:5f:97:7b:ed:45, 1e:82:30:4c:1b:4e, 12:92:e6:0f:e7:a6, 36:ca:3c:01:57:f4, 0e:ad:1f:2b:9f:1f, ba:b0:f9:d6:43:b5, 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f2:ed:ec:33:59:2e, 16:41:97:cf:92:42, b6:9f:cd:fa:85:e1, 92:02:fe:91:64:d3, 52:34:42:99:39:bf, 36:de:50:c5:de:d6, a6:d0:d5:44:ac:58, 6a:ae:38:9d:d1:a5, 2a:49:d4:29:55:d9, f2:a9:2c:b4:91:10, c6:4c:83:a7:ca:a4, 42:33:32:f4:f1:43, 16:9d:a5:2f:6f:3c, e2:03:fd:3d:c4:52, 02:bc:ae:fa:e1:80, d6:9b:08:18:e3:54, a2:8a:3a:b7:56:a6, 3e:c8:09:e4:21:01, f2:4f:20:09:9e:cd, b2:53:b1:34:b3:27, 52:a2:16:9d:8a:59, 4a:7b:89:da:05:18, da:3d:f7:ff:91:58, 22:c7:71:7e:7a:59, a6:34:b0:e9:e5:c1, a2:aa:1b:c3:cd:db, f2:1a:86:76:b6:a1, ee:25:e8:99:f0:ee, 62:af:7b:08:1a:b3, 2a:d0:6a:c4:04:c1, 06:c0:2a:36:96:76, 16:9f:d9:4b:a1:ae, 22:af:71:64:e4:9f, 1a:ac:fc:a1:9e:86, c6:ba:87:3e:fa:ed, 32:7a:0b:de:ca:9c, 62:2f:a4:d9:6a:20, f2:02:c6:f0:e1:a8, 1e:b9:d4:c9:68:5f, 9a:fe:5c:6a:e2:cd, b2:62:6f:9a:48:c3, 76:0f:67:49:f0:b2, f6:d9:1e:92:d4:5c, 86:c4:85:60:fc:5e, c6:65:9d:c7:40:0a, 7a:1e:04:11:29:91, a2:cc:f2:9a:ef:2b, 76:8d:42:c4:44:29, aa:a1:23:0e:d3:06, de:9c:c5:b8:45:f2, 0a:38:7a:4d:eb:05, e2:0c:fe:09:93:44, 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72:67:e1:fd:71:ad, 1a:f9:a5:e0:b5:5a, 0a:c0:60:71:a6:a5, a6:fd:79:06:1a:85, 6a:7e:ff:ec:2f:cd, 46:38:fe:c7:28:54, 4a:16:a1:be:b1:6a, ba:a4:bf:3a:cd:61, fa:70:b2:6f:ac:f6, 46:ae:a6:47:73:8f, e6:89:3e:93:73:2f, 3a:fc:fd:b7:27:fa, 86:fd:d2:f3:2d:2a, ae:78:5a:e9:eb:ce, 3a:a7:c6:4f:11:d6, fe:5d:a0:0b:1f:46, e6:18:40:8a:41:10, 42:5e:ab:68:84:07, da:8b:71:43:70:90, 42:68:f3:79:5b:b4, 4e:c8:e2:88:57:cc, ba:8e:6e:e6:d8:69, d6:7b:f5:5c:ad:eb, d6:75:c5:88:53:fc, ae:7c:0a:e5:b5:d2, a6:26:49:e7:9d:2f, de:fc:04:71:3b:65, fa:9b:c0:22:50:6a, 3a:bd:64:99:cb:d2, 92:72:02:60:b7:93, 0a:f7:7f:6a:f7:db, 16:23:b7:7f:74:4e, b6:ac:81:45:33:8d, ee:e5:39:9f:86:ee, 26:66:34:05:56:4a, 2a:23:40:2e:16:85, a2:e0:1b:66:4b:2a, fa:21:a7:72:e3:29, c2:4f:eb:06:32:37, 06:24:e9:e7:2e:be, 8a:c2:c9:35:d6:1c, 1e:78:1b:5d:22:c1, da:70:bd:d5:26:ba, aa:cf:46:5b:5e:28, 42:a8:e3:a6:87:8a, 9a:53:29:4e:78:9c, 52:bf:86:f3:19:d3, da:73:bc:a6:b0:cb, 4e:90:09:61:8d:25, c2:bf:40:54:79:56, 9e:a5:f3:d4:82:05, 0e:2a:33:a1:8f:cb, ce:d0:b4:02:c1:92, 92:4d:a0:62:da:10, 36:f7:e9:5f:6f:8e, ae:ae:7a:2b:ce:a3, f2:25:f9:f3:d9:43, 42:83:43:f1:37:45, 2a:2f:30:07:3d:a1, 3a:f1:1f:c5:5d:02, ca:f4:61:2f:11:fd, 66:35:82:3e:74:d0, 86:41:c2:e8:74:d3, b6:ea:bb:dd:d4:85, 56:1f:71:59:8e:e1, 52:5b:eb:a5:17:9b, ae:08:fd:6d:5f:4c, 82:0f:d9:64:98:f4, 56:8a:41:ec:c2:ba, de:88:8c:96:9f:29, 9a:44:ba:4d:8c:38, 2e:6d:54:dd:85:33, 72:84:65:31:d2:7d, e2:bc:89:af:9f:51, 8e:dc:3c:fa:6d:f5, ea:7f:28:d5:28:e2, 22:7b:16:f1:c2:75, 56:13:43:4e:ed:1b, c2:dc:ed:56:12:04, aa:c5:37:66:10:cb, 02:d4:c0:a1:92:33, 62:9e:59:b4:94:6f, e6:02:82:3e:6a:95, 7a:e7:be:27:39:f7, 2e:4f:c7:09:cf:28, 6e:46:5f:1f:fb:fd, ba:2e:e5:fb:01:f0, b6:79:a9:1d:a9:27, a2:b9:f3:42:fa:46, 3a:f5:68:91:44:fe, a6:57:27:66:1d:69, 6e:29:29:50:c9:c8, 42:1d:61:b7:05:87, a2:ba:31:fd:bc:23, ae:00:04:ab:50:08, 4e:72:42:c5:57:39, 96:80:7c:c2:b5:0c, de:1e:4c:ed:09:fd, 42:fa:6a:15:01:54, 1a:77:31:b0:c5:57, ba:9c:00:f8:f4:b4, c2:d4:3e:31:7a:b7, 4e:10:cb:b4:2c:7f, 72:53:19:1f:4b:40, be:72:f6:fd:17:6f, 32:b4:93:14:a8:c2, 46:32:5e:9b:e3:c5, da:ab:f7:b9:2e:a0, 8e:40:a4:fe:2b:9a, 3e:c6:df:9f:af:37, 5a:41:72:99:53:c7, c6:04:08:cd:5c:8c, aa:88:c3:38:6b:42, 9a:ab:84:6d:63:86, da:36:06:70:e6:e7, 1a:b0:0f:8d:ee:9c, 5a:fb:26:b0:63:81, be:73:66:53:fd:a5, 46:97:0f:3e:7e:00, 5a:a7:4a:2c:d2:46, 9e:5a:bc:14:e3:c4, e6:98:3c:61:e5:fb, d2:5d:dc:8b:8b:96, 9a:c4:59:99:99:3d, c2:ea:d4:31:7e:1b, 4a:d8:e3:89:c9:27, ae:7a:c2:fb:3d:49, 0e:8b:22:fb:18:eb, 5a:b7:82:2d:9c:02, ba:d5:6f:73:f3:16, d2:df:cc:1a:0a:e8, 2a:f7:c8:aa:84:12, ea:76:33:a1:2c:7c, 7e:83:70:f3:2e:03, aa:89:d6:b4:cd:6f, 42:94:fc:c7:54:12

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Informazioni su indirizzi mac

Ethernet began as a memo. On 22 May 1973, in twelve pages written at Xerox PARC, Robert Metcalfe named the concept "The Ether Network" — after the luminiferous aether that nineteenth-century physics supposed carried electromagnetic waves, a name chosen to stress that the scheme could run over any medium at all. The network he and David Boggs built between Alto computers first ran on 11 November 1973, at 2.94 Mbit/s.

Commercialisation fixed the address format. Metcalfe, Gordon Bell and David Liddle argued for standardising Ethernet rather than keeping it a Xerox product, and brought Digital Equipment Corporation and Intel together with Xerox on a common specification: the DIX standard, published on 30 September 1980 as the Ethernet Blue Book, with version 2 following in November 1982. The 48-bit address it carried was wide enough that every interface ever manufactured could be given a unique number at the factory, with no configuration step and no server to consult at boot — and it was adopted wholesale by the later IEEE 802 standards, Wi-Fi included, as well as by FDDI. IEEE Project 802 formed an 802.3 subcommittee in June 1981, approved its CSMA/CD standard in December 1982, and published it as a standard in 1985.

Two bits of the first octet carry flags rather than identity. The least significant distinguishes an individual address from a group, or multicast, one. The next marks the address as locally administered — assigned by software or by an administrator, overriding whatever was burned into the hardware. That bit is what makes a page like this one safe to use.

Two widely repeated claims deserve qualifying. A MAC address is not fixed: many interfaces allow it to be changed, and operating systems now change it routinely for privacy. And the first three octets do not always identify one manufacturer. Alongside the 24-bit blocks it issues outright, the IEEE Registration Authority runs smaller registries that append extra IEEE-supplied bits to a prefix it keeps for itself, so that one 24-bit value is divided among many holders — 00:50:C2 was used this way from 2007 until September 2012, and 40:D8:55 after it.

Proprietà principali

  • An EUI-48 address, which is what "MAC address" normally means, is 48 bits written as six hexadecimal octets, giving 2^48 = 281,474,976,710,656 possible values.
  • The least significant bit of the first octet is the I/G bit: 0 for an individual (unicast) address, 1 for a group (multicast) one. The broadcast address ff:ff:ff:ff:ff:ff has every bit set, that one included, so broadcast is a special case of multicast.
  • The second-least-significant bit of the first octet is the U/L bit: when it is set the address is locally administered rather than an IEEE assignment. In 06-00-00-00-00-00 the first octet is binary 00000110, so that bit is 1.
  • A locally administered unicast address therefore always has 2, 6, A or E as its second hex digit, and a locally administered group address has 3, 7, B or F.
  • Only 2^46 = 70,368,744,177,664 of the 2^48 addresses are universally administered unicast addresses, since both flag bits must be clear.
  • The IEEE 802 format for printing an EUI-48 is six groups of two hexadecimal digits separated by hyphens, in transmission order; six groups separated by colons, and three groups of four separated by dots, are the other common conventions.
  • IPv6 stateless address autoconfiguration derives a 64-bit interface identifier from a MAC address by inserting the octets 0xFF and 0xFE in the middle and inverting the U/L bit, per RFC 4291 Appendix A — in the modified EUI-64 that results, a set bit means universally unique, the opposite sense to an EUI-48.
  • Multicast MAC addresses are mapped down from the network layer: RFC 1112 places the low 23 bits of an IPv4 multicast group into 01-00-5E-00-00-00, and RFC 2464 prefixes 3333 hexadecimal to the last four octets of an IPv6 multicast address.

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