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AUTONOMOUS SYSTEM NUMBERS
The Autonomous System (AS) numbers are used by various routing
protocols. AS numbers are allocated to the regional registries by the
IANA. These registries are the ARIN <hostmaster@ARIN.net>,
RIPE-NCC <ncc@ripe.net>, and the AP-NIC <admin@apnic.net>. AS Numbers
can be obtained from the registry in your region. Listed below are
the allocated blocks to the regional registries.
Number Description
-------------- -------------------------------------------------------------
0 Reserved - May be use to identify non-routed networks
1 - 1876 Allocated by ARIN
1877 - 1901 Allocated by RIPE NCC
1902 - 2042 Allocated by ARIN
2043 Allocated by RIPE NCC
2044 - 2046 Allocated by ARIN
2047 Allocated by RIPE NCC
2048 - 2106 Allocated by ARIN
2107 - 2136 Allocated by RIPE NCC
2137 - 2584 Allocated by ARIN
2585 - 2614 Allocated by RIPE NCC
2615 - 2772 Allocated by ARIN
2773 - 2822 Allocated by RIPE NCC
2823 - 2829 Allocated by ARIN
2830 - 2879 Allocated by RIPE NCC
2880 - 3153 Allocated by ARIN
3154 - 3353 Allocated by RIPE NCC
3354 - 4607 Allocated by ARIN
4608 - 4864 Allocated by AP NIC
4865 - 5376 Allocated by ARIN
5377 - 5631 Allocated by RIPE NCC
5632 - 6655 Allocated by ARIN
6656 - 6911 Allocated by RIPE NCC
6912 - 7466 Allocated by ARIN
7467 - 7722 Allocated by AP NIC
7723 - 8191 Allocated by ARIN
8192 - 9215 Allocated by RIPE NCC
9216 - 10239 Allocated by AP NIC
10240 - 11263 Allocated by ARIN
11264 - 12287 Allocated by ARIN
12288 - 13311 Allocated by RIPE NCC
13312 - 14335 Allocated by ARIN
14336 - 15359 Allocated by ARIN
15360 - 16383 Allocated by RIPE NCC
16384 - 17407 Allocated by ARIN
17408 - 18431 Allocated by AP NIC
18432 - 19455 Allocated by ARIN
19456 - 20479 Allocated by ARIN
20480 - 21503 Allocated by RIPE NCC
21504 - 22527 Allocated by ARIN
22528 - 32767 Held by the IANA
32768 - 64511 Reserved by the IANA
64512 - 65534 Designated for private use (Allocated to the IANA)
65535 Reserved
(last updated Apr 23 2001)
[]
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