Autonomous system
AS18815 AS-CITY-AND-COUNTY-OF-DENVER - CITY AND COUNTY OF DENVER
Unclassified ARIN
Summary
City and County of Denver
government municipal network
The AS handle AS-CITY-AND-COUNTY-OF-DENVER is held by City and County of Denver.
What it's used for
- The address space is registered under the netname
CITY-AND-COUNTY-OF-DENVER-169-133, indicating municipal government infrastructure. - The AS announces 65024 IPv4 addresses across 14 prefixes with only 1 observed neighbour, a ratio consistent with a self-contained internal network rather than a transit or access provider.
Notable
- All registrants in the evidence pack match the announcer, identified uniformly as CITY AND COUNTY OF DENVER.
- The inventory consists of 14 IPv4 prefixes within the 169.133.0.0/16 range, with no IPv6 prefixes announced.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS13649 | Flexential Colorado Corp. | 183 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 14 prefixes · 65.02K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 14 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS18815- Registry name
- AS-CITY-AND-COUNTY-OF-DENVER
- Registrant
- CITY AND COUNTY OF DENVER
- Abuse contact
- license.administrator@denvergov.org
- Registered
- 2007-08-03
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 0 authorising AS18815
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 1 naming AS18815
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 447 networks and 1,843 prefixes, as published 2026-11-01. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere