asn.dev

Autonomous system

AS27206 COSL-01

Unclassified APNIC

IPv4 addresses 512 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

City of Sugar Land

United States of America · AI-generated

government municipal residential windstream

COSL-01 is the autonomous system for the City of Sugar Land.

What it's used for

  • The address space carries residential dynamic IP addresses, evidenced by reverse DNS records pointing to dynamic.ip.windstream.net (e.g., h64.81.16.72.dynamic.ip.windstream.net).
  • The AS announces 512 IPv4 addresses across 2 prefixes and maintains 2 observed neighbours, a ratio consistent with a small municipal access network rather than a transit provider.

Notable

  • Registrants for both announced prefixes (72.16.81.0/24 and 168.151.254.0/24) are listed as CITY OF SUGAR LAND or City of Sugar Land, matching the AS holder.
  • The inventory consists of two /24 blocks, one of which (72.16.81.0/24) shows Windstream reverse DNS, suggesting the city operates or leases this space for local broadband services.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS33662Comcast Cable Communications, LLC60
AS35847Ezee Fiber58

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 2 prefixes · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America2

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS27206
Registry name
COSL-01
Registrant
City of Sugar Land
Abuse contact
rbowman@sugarlandtx.gov
Registered
2024-02-14
Last changed
2024-02-14
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS27206
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
3 naming AS27206

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: 442 networks and 1,784 prefixes, as published 2026-10-19. 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

Cross-check