BGP Autonomous System Numbers

Number

Description

0

Reserved. Can be use to identify non-routed networks

1,877 to 1,901

Allocated by RIPE NCC

1,902 to 2,042

Allocated by ARIN

2,043

Allocated by RIPE NCC

2,044 to 2,046

Allocated by ARIN

2,047

Allocated by RIPE NCC

2,048 to 2,106

Allocated by ARIN

2,107 to 2,136

Allocated by RIPE NCC

2,137 to 2,584

Allocated by ARIN

2,585 to 2,614

Allocated by RIPE NCC

2,615 to 2,772

Allocated by ARIN

2,773 to 2,822

Allocated by RIPE NCC

2,823 to 2,829

Allocated by ARIN

2,830 to 2,879

Allocated by RIPE NCC

2,880 to 3,153

Allocated by ARIN

3,154 to 3,353

Allocated by RIPE NCC

3,354 to 4,607

Allocated by ARIN

4,608 to 4,864

Allocated by AP NIC

4,865 to 5,376

Allocated by ARIN

5,377 to 5,631

Allocated by RIPE NCC

5,632 to 6,655

Allocated by ARIN

6,656 to 6,911

Allocated by RIPE NCC

6,912 to 7,466

Allocated by ARIN

7,467 to 7,722

Allocated by AP NIC

7,723 to 8,191

Allocated by ARIN

8,192 to 9,215

Allocated by RIPE NCC

9,216 to 10,239

Allocated by AP NIC

10,240 to 11,263

Allocated by ARIN

11,264 to 12,287

Allocated by ARIN

12,288 to 13,311

Allocated by RIPE NCC

13,312 to 14,335

Allocated by ARIN

14,336 to 15,359

Allocated by ARIN

15,360 to 16,383

Allocated by RIPE NCC

16,384 to 17,407

Allocated by ARIN

17,408 to 18,431

Allocated by AP NIC

18,432 to 19,455

Allocated by ARIN

19,456 to 20,479

Allocated by ARIN

20,480 to 21,503

Allocated by RIPE NCC

21,504 to 22,527

Allocated by ARIN

22,528 to 32,767

Held by the IANA

32,768 to 64,511

Reserved by the IANA

64,512 to 65,534

Designated for private use (Allocated to the IANA)

6,5535

Reserved