AS1637

Headquarters, USAISC

AS 1637 DNIC-AS-01637

Autonomous Systems are networks typically governed by large ISPs that participate in global Internet routing. Each network is assigned a unique identification number known as the AS number or ASN by the Internet Assigned Numbers Authority.

233,728 IP addresses
ASN1637
NameDNIC-AS-01637
OrganizationHeadquarters, USAISC
CountryUnited States  
RegistryARIN
IPv4 addresses233,728
IPv6 /64 networks216
Prefixes123
Other ASN allocated to Headquarters, USAISC
ASN Name IP addresses
1540 DNIC-ASBLK-01534-01546 4,390,144
4010 DNIC-AS-04010 1,176,832
1602 DNIC-AS-01602 234,752
1649 DNIC-AS-01649 149,248
747 DNIC-AS-00747 145,664
1530 DNIC-ASBLK-01529-01530 138,752
1493 DNIC-ASBLK-01492-01493 129,792
1516 DNIC-ASBLK-01513-01518 99,584
13 DNIC-AS-00013 81,152
289 DNIC-AS-00289 73,728
252 DNIC-AS-00252 70,144
1501 DNIC-ASBLK-01500-01502 47,360
213 DNIC-AS-00213 32,768
258 BRAGGSRI-EGP-AS 512
1544 DNIC-ASBLK-01534-01546 512
538 DNIC-AS-00538 512
1508 DNIC-AS-01508 512
672 DNIC-AS-00672 256
1492 DNIC-ASBLK-01492-01493 256
153 CTNOSC-ASN-153 256
673 DNIC-AS-00673 256
1523 DNIC-ASBLK-01522-01526 256
1512 CTNOSC-ASN-1512 0
1511 DNIC-AS-01511 0
1503 DNIC-AS-01503 0
1504 DNIC-AS-01504 0
1505 DNIC-AS-01505 0
1506 WOOD-AS 0
1510 DNIC-ASBLK-01509-01510 0
1509 DNIC-ASBLK-01509-01510 0
1507 DNIC-AS-01507 0
1502 DNIC-ASBLK-01500-01502 0
1481 CTNOSC-ASN-1481 0
1482 DNIC-AS-01482 0
1483 DNIC-AS-01483 0
1484 DNIC-AS-01484 0
1485 DNIC-AS-01485 0
1488 DNIC-ASBLK-01488-01489 0
1489 DNIC-ASBLK-01488-01489 0
1490 20THSUPCOM 0
1491 DNIC-AS-01491 0
1450 DNIC-AS-01450 0
1494 DNIC-ASBLK-01494-01495 0
1495 DNIC-ASBLK-01494-01495 0
1498 DNIC-ASBLK-01498-01499 0
1500 DNIC-ASBLK-01500-01502 0
1480 DNIC-AS-01480 0
1515 DNIC-ASBLK-01513-01518 0
1538 DNIC-ASBLK-01534-01546 0
1539 DNIC-ASBLK-01534-01546 0
1541 DNIC-ASBLK-01534-01546 0
1626 DNIC-AS-1626 0
1644 DNIC-AS-1644 0
2750 CTNOSC-ASN-2750 0
4011 DNIC-AS-04011 0
4254 DNIC-AS-04254 0
4315 DNIC-AS-04315 0
4380 DNIC-AS-04380 0
4442 DNIC-AS-04442 0
4537 DNIC-AS-04537 0
1537 DNIC-ASBLK-01534-01546 0
1536 DNIC-ASBLK-01534-01546 0
1535 DNIC-ASBLK-01534-01546 0
1518 DNIC-ASBLK-01513-01518 0
1519 DNIC-AS-01519 0
1520 DNIC-AS-01520 0
1521 DNIC-AS-01521 0
1531 DNIC-AS-01531 0
1524 DNIC-ASBLK-01522-01526 0
1525 DNIC-ASBLK-01522-01526 0
1526 DNIC-ASBLK-01522-01526 0
1527 DNIC-AS-01527 0
1528 DNIC-AS-01528 0
1532 DNIC-AS-01532 0
1533 DNIC-AS-01533 0
5016 BRAGG-NEC 0
51 DNIC-AS-00051 0
530 DNIC-AS-00530 0
531 DNIC-AS-00531 0
533 DNIC-AS-00533 0
534 DNIC-AS-00534 0
535 DNIC-AS-00535 0
536 DNIC-AS-00536 0
537 DNIC-AS-00537 0
539 DNIC-AS-00539 0
575 DNIC-AS-00575 0
588 DIRECTRON 0
615 DNIC-AS-00615 0
666 CTNOSC-ASN-666 0
670 DNIC-AS-00670 0
671 DNIC-AS-00671 0
526 DNIC-AS-00526 0
525 CTNOSC-525-AS 0
54 DNIC-AS-00054 0
66 DNIC-AS-00066 0
83 DNIC-AS-00083 0
94 DNIC-AS-00094 0
96 DNIC-AS-00096 0
142 DNIC-AS-00142 0
154 DNIC-AS-00154 0
172 DNIC-AS-00172 0
215 DNIC-AS-00215 0
227 DNIC-AS-00227 0
272 CTNOSC-ASN-272 0
285 DNIC-AS-00285 0
305 DNIC-AS-00305 0
523 DNIC-AS-00523 0
694 DNIC-AS-00694 0
716 DNIC-AS-00716 0
772 DNIC-AS-00772 0
1461 DNIC-AS-01461 0
1462 DNIC-ASBLK-01462-01463 0
1463 DNIC-ASBLK-01462-01463 0
1464 DNIC-ASBLK-01464-01465 0
1466 DNIC-AS-01466 0
1467 DNIC-ASBLK-01467-01468 0
1468 DNIC-ASBLK-01467-01468 0
1471 DNIC-ASBLK-01471-01472 0
1472 DNIC-ASBLK-01471-01472 0
1473 DNIC-AS-01473 0
1474 DNIC-ASBLK-01474-01477 0
1475 DNIC-ASBLK-01474-01477 0
1476 DNIC-ASBLK-01474-01477 0
1477 DNIC-ASBLK-01474-01477 0
1460 DNIC-ASBLK-01458-01460 0
1458 DNIC-ASBLK-01458-01460 0
785 DNIC-AS-00785 0
798 DNIC-AS-00798 0
799 DNIC-AS-00799 0
1210 3RD-US-ARMY-ASN 0
1211 DNIC-AS-01211 0
1212 DNIC-AS-01212 0
1243 DNIC-AS-01243 0
1259 WRAIR-ASN 0
1264 USACESPK-AS 0
1451 DNIC-ASBLK-01451-01456 0
1452 DNIC-ASBLK-01451-01456 0
1453 DNIC-ASBLK-01451-01456 0
1456 DNIC-ASBLK-01451-01456 0
1457 DNIC-AS-01457 0
1479 DNIC-ASBLK-01478-01479 0
IPv4 Prefixes for AS1637 - showing the first 20 of 122 networks
Network Location Addresses
143.46.0.0/16 United States Department of Defense (DoD)   Chiyoda City 65,536
143.46.10.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.11.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.110.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.116.0/22 United States Department of Defense (DoD)   Chiyoda City 1,024
143.46.12.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.120.0/22 United States Department of Defense (DoD)   Chiyoda City 1,024
143.46.128.0/23 United States Department of Defense (DoD)   Chiyoda City 512
143.46.130.0/23 United States Department of Defense (DoD)   Chiyoda City 512
143.46.134.0/23 United States Department of Defense (DoD)   Sierra Vista (Fort Huachuca) 512
143.46.140.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.141.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.142.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.143.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.144.0/24 United States Department of Defense (DoD)   Sierra Vista (Fort Huachuca) 256
143.46.145.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.146.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.147.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.150.0/24 United States Department of Defense (DoD)   Chiyoda City 256
143.46.151.0/24 United States Department of Defense (DoD)   Chiyoda City 256
IPv6 Prefixes for AS1637
Network Location /64 Prefixes
2608:c141:30::/48 United States Department of Defense (DoD)   Columbus 216