Autonomous system profile

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

AS637

Announcement observedARIN

United States Department of Defense (DoD) · DNIC-ASBLK-00616-00665

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

Last active9/29/2026, 06:38:09Snapshot expired

View network topology RDAP registration

ASN: AS637
Registration country: United States
Name: United States Department of Defense (DoD)
Abbreviation: DNIC-ASBLK-00616-00665
Registration date: 4/19/1990, 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
137.232.161.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.232.194.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.233.5.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.0.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.110.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.128.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/17/2026, 16:00:00	✓	×	Historical record
137.234.139.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.140.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.156.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.160.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.164.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.168.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/23/2026, 00:00:00	9/23/2026, 00:00:00	✓	×	Historical record
137.234.178.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.181.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.182.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.183.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.185.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/29/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.186.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.192.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.196.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/24/2026, 00:00:00	9/24/2026, 00:00:00	✓	×	Historical record
137.234.197.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/16/2026, 16:00:00	✓	×	Historical record
137.234.198.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	9/17/2026, 08:00:00	✓	×	Historical record
137.234.199.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/15/2026, 08:00:00	✓	×	Historical record
137.234.2.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.200.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
137.234.204.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.205.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 00:00:00	9/28/2026, 00:00:00	✓	×	Historical record
137.234.206.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/25/2026, 00:00:00	✓	×	Historical record
137.234.207.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/25/2026, 08:00:00	9/25/2026, 08:00:00	✓	×	Historical record
137.234.208.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/20/2026, 16:00:00	✓	×	Historical record
137.234.212.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/20/2026, 16:00:00	✓	×	Historical record
137.234.247.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/17/2026, 00:00:00	✓	×	Historical record
137.234.248.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 08:00:00	9/18/2026, 08:00:00	✓	×	Historical record
137.234.249.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.250.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/18/2026, 16:00:00	✓	×	Historical record
137.234.26.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 00:00:00	9/21/2026, 00:00:00	✓	×	Historical record
137.234.27.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/16/2026, 08:00:00	9/16/2026, 08:00:00	✓	×	Historical record
137.234.64.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.75.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 08:00:00	9/23/2026, 00:00:00	✓	×	Historical record
137.234.77.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/28/2026, 08:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.8.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/15/2026, 08:00:00	✓	×	Historical record
137.234.80.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.84.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.86.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/16/2026, 08:00:00	✓	×	Historical record
137.234.87.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.234.89.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 08:00:00	9/18/2026, 08:00:00	✓	×	Historical record
137.235.126.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.235.128.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.235.130.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record
137.235.133.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/15/2026, 00:00:00	9/29/2026, 00:00:00	✓	×	Historical record

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

Registration and sources

Organization: United States Department of Defense (DoD)
RIR: ARIN
Registration country: United States
Registration date: 4/19/1990, 04:00:00
Abuse contact: disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil

Snapshot trend

9/29/2026, 06:38:09549 v40 v63 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