Autonomous system profile

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

AS31756

Announcement observedARIN

COLORADOSPRINGS-GOV - City of Colorado Springs · COLORADOSPRINGS-GOV

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

Last active10/14/2026, 00:00:00Snapshot expired

View network topology RDAP registration

ASN: AS31756
Registration country: United States
Name: COLORADOSPRINGS-GOV - City of Colorado Springs
Abbreviation: COLORADOSPRINGS-GOV
Registration date: 3/1/2011, 19:59:14
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
158.120.0.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/18/2026, 00:00:00	10/13/2026, 00:00:00	✓	×	Currently valid

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

Registration and sources

Organization: COLORADOSPRINGS-GOV - City of Colorado Springs
RIR: ARIN
Registration country: United States
Registration date: 3/1/2011, 19:59:14
Abuse contact: christopher.porter@coloradosprings.gov

Snapshot trend

10/2/2026, 10:22:021 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 · rir-rdap-asn · iana-rdap-asn-bootstrap · cha-la-bgp-observations