asn.dev

Autonomous system

AS21779 HARLANONLINE

Unclassified ARIN

IPv4 addresses 6.14K 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 4 0 downstream
Flagged prefixes 0 none

Summary

harlanOnline

United States of America · AI-generated

cable residential business local

The AS handle HARLANONLINE is held by Harlan Community Television, Inc.

What it's used for

  • The address space carries residential and small business services, evidenced by reverse DNS entries like 76-164-244-0.harlanonline.net and the registrant netname HARLANONLINE.
  • The AS announces 6144 IPv4 addresses across 3 prefixes and maintains 4 observed neighbours, a ratio consistent with a local access network rather than a transit provider.

Notable

  • All registrants for the announced prefixes are listed as Harlan Community Television, Inc., matching the AS holder.
  • The address inventory consists of one /20 block and two /22 blocks, all located in the United States.

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

4 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS393444Accelecom159
AS25645Momentum Telecom, Inc.24
AS7018AT&T Enterprises, LLC6
AS10796Charter Communications Inc6

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, 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 3 prefixes · 6.14K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America3

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS21779
Registry name
HARLANONLINE
Registrant
Harlan Community Television, Inc.
Abuse contact
abuse@harlanonline.net
Registered
2008-07-03
Last changed
2024-05-23
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 3 valid, 0 with no ROA
ROAs
3 authorising AS21779
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
7 naming AS21779

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 1,779 prefixes, as published 2026-10-22. 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