asn.dev

Autonomous system

AS54989 DUNCAN-TV

Unclassified ARIN

IPv4 addresses 2.05K 7 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Duncan Telecommunications

United States of America · AI-generated

cable residential vt isp

DUNCAN-TV is operated by Duncan Telecommunications LLC.

What it's used for

  • The address space carries residential cable internet traffic, evidenced by reverse DNS entries such as host128.duncable-6.cust.sover.net and host-198-168-37-64.duncancable.com.
  • The AS announces 2048 IPv4 addresses across 7 prefixes with only 1 observed neighbour, a ratio characteristic of a local access network rather than a transit provider.
  • Traffic consists of subscriber eyeballs for the Deerfield Valley region in Vermont, where the company has provided family-owned cable and telecommunications services since 1972.

Notable

  • Registrants are consistent with the announcer, including Duncan Cable, DUNCAN TELECOMMUNICATIONS LLC, and FirstLight Networks, LLC for the largest block.
  • The inventory is composed of small, fragmented /24 and /23 blocks, reflecting a legacy local cable plant rather than a large-scale modern allocation.

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

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS13536FirstLight Fiber, Inc.513

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 7 prefixes · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America7

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS54989
Registry name
DUNCAN-TV
Registrant
DUNCAN TELECOMMUNICATIONS LLC
Abuse contact
noc@momentumtelecom.com
Registered
2013-02-11
Last changed
2013-02-11
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
88% valid · 7 valid, 1 with no ROA
ROAs
7 authorising AS54989
ASPA
no ASPA record
IRR
100% registered · 8 of 8 announcements
Route objects
17 naming AS54989

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: 443 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