AS14291 — ANTIETAM

AS14291 announces 24 IPv4 prefixes covering 55,808 addresses and 0 IPv6 prefixes.

About this network

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-VI and ANTIETAM-BLK-VII, all registered to Antietam Broadband.
• Five more blocks carry the four-letter ANTM, and one carries ANTIEM-24-89.
• ANTIETAM-BLK-V labels 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-170-232-0 and dyn-8-0 all 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-8-0 without 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 dyn or stat. 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.

Announced prefixes

• 24.49.32.0/19
• 24.89.0.0/19
• 24.153.112.0/20
• 24.170.224.0/19
• 24.235.80.0/20
• 64.7.40.0/21
• 69.88.32.0/20
• 131.226.16.0/21
• 139.60.208.0/23
• 139.180.20.0/22
• 147.185.104.0/23
• 147.185.192.0/23
• 159.26.192.0/21
• 162.210.236.0/22
• 167.94.216.0/22
• 192.16.120.0/23
• 199.45.244.0/22
• 199.73.28.0/22
• 204.80.100.0/22
• 206.198.248.0/21
• 208.93.196.0/22
• 208.101.228.0/24
• 208.101.237.0/24
• 216.245.84.0/22

Upstream networks

• AS174 Cogent Communications, LLC
• AS3257 GTT Communications Inc.
• AS6939 Hurricane Electric LLC
• AS293 ESnet
• AS37721 Virtual Technologies & Solutions
• AS24482 SG.GS

Downstream networks

• AS40540 Meritus Medical Center, Inc.
• AS19861 Washington County Board of Education
• AS401062 Hagerstown Community College

Adjacent networks

• AS174 Cogent Communications, LLC
• AS3257 GTT Communications Inc.
• AS6939 Hurricane Electric LLC
• AS40540 Meritus Medical Center, Inc.
• AS19861 Washington County Board of Education
• AS37721 Virtual Technologies & Solutions
• AS293 ESnet
• AS24482 SG.GS
• AS401062 Hagerstown Community College

Internet exchanges

• Equinix Internet Exchange Ashburn — Ashburn, United States