Autonomous system
AS14291 ANTIETAM
Unclassified ARIN
Summary
Antietam Broadband
isp telecom infrastructure
Blocks numbered in Roman numerals, and reverse names that use three different label lengths in one zone.
What it's used for
- A regional cable operator. 55,808 addresses across 24 IPv4 prefixes, with 21 observed BGP neighbours and no IPv6 announced.
Notable
- Netnames include
ANTIETAM-BLK-II,ANTIETAM-BLK-III,ANTIETAM-BLK-V,ANTIETAM-BLK-VIandANTIETAM-BLK-VII, all registered toAntietam Broadband. - Five more blocks carry the four-letter
ANTM, and one carriesANTIEM-24-89. ANTIETAM-BLK-Vlabels two separate blocks.- All eighteen sampled addresses returned a name, every one under
myactv.net. - The labels vary in length:
dyn-24-49-40-0,dyn-170-232-0anddyn-8-0all appear.
Interesting
- Roman numerals in a netname date the filing to when blocks arrived one at a time and a human numbered each new one. The habit stops partway through: later blocks get a four-letter abbreviation instead, which is what happens when the person who started the scheme moves on.
- The reverse labels drop as many leading octets as the zone allows, so a name can be four numbers, three or two. Anything shorter is only unique inside its own zone, and reading
dyn-8-0without knowing which zone it came from tells you nothing. - One netname on two unrelated ranges means the registry cannot distinguish them either.
- Every sampled address answers, and the names say
dynorstat. The operator publishes whether a line is dynamic or static as a matter of course.
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
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange Ashburn | Ashburn, United States | 206.126.236.30 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-22, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 24 prefixes · 55.81K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 24 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS14291- Registry name
- ANTIETAM
- Registrant
- Antietam Broadband
- Abuse contact
- abuse@myactv.net
- Registered
- 2002-03-12
- Last changed
- 2017-10-27
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 93% valid · 26 valid, 2 with no ROA
- ROAs
- 23 authorising AS14291
- ASPA
- no ASPA record
- IRR
- 100% registered · 28 of 28 announcements
- Route objects
- 63 naming AS14291
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 2026-10-23. 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