Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS1501

Announcement observedARIN

Headquarters, USAISC · DNIC-ASBLK-01500-01502

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active9/29/2026, 07:49:28Snapshot expired

View network topology RDAP registration

ASN: AS1501
Registration country: United States
Name: Headquarters, USAISC
Abbreviation: DNIC-ASBLK-01500-01502
Registration date: 5/12/2004, 04:00:00
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
136.210.224.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
136.210.249.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.128.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.130.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 16:00:00	9/28/2026, 16:00:00	✓	×	Currently valid
143.194.132.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.133.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.134.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.135.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 16:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.136.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.137.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.138.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.139.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.140.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 16:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.141.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 16:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.194.142.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.249.104.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/16/2026, 00:00:00	✓	×	Historical record
143.249.104.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/15/2026, 08:00:00	✓	×	Historical record
143.249.105.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/15/2026, 08:00:00	✓	×	Historical record
143.249.111.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/27/2026, 16:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.249.164.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/18/2026, 08:00:00	✓	×	Historical record
143.249.165.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/23/2026, 08:00:00	✓	×	Currently valid
143.249.166.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 16:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.249.167.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/16/2026, 00:00:00	✓	×	Historical record
143.249.196.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.249.96.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/16/2026, 00:00:00	✓	×	Historical record
143.70.1.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/15/2026, 00:00:00	✓	×	Historical record
143.70.15.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.70.176.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/27/2026, 16:00:00	9/27/2026, 16:00:00	✓	×	Currently valid
143.70.4.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 08:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.28.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.29.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.35.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.38.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.48.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/26/2026, 00:00:00	✓	×	Currently valid
143.73.49.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.50.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.51.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.53.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.55.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.56.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.57.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.58.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.62.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.63.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.64.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.65.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.69.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.70.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/24/2026, 16:00:00	✓	×	Currently valid
143.73.71.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid
143.73.72.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: Headquarters, USAISC
RIR: ARIN
Registration country: United States
Registration date: 5/12/2004, 04:00:00
Abuse contact: disa.columbus.ns.mbx.arin-registrations@mail.mil

Snapshot trend

9/29/2026, 07:49:28173 v40 v61 Upstream · 0 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · iana-rdap-asn-bootstrap · rir-rdap-asn