AS14928 — ADAMS-CATV

Network type: residential

AS14928 announces 6 IPv4 prefixes covering 28,928 addresses and 1 IPv6 prefixes.

About this network

The reverse names write each address backwards as four separate labels, so every host looks like a subdomain four levels deep.

What it's used for

• A cable and telephone company's broadband network. 28,928 addresses across six IPv4 prefixes plus one IPv6 prefix, 2607:3e00::/32, with a single observed BGP neighbour.

Notable

• Five blocks carry the netname PENTELEDATA, registered to PenTeleData Inc.
• The sixth, 23.172.16.0/24, carries PTD-BROADBAND-NAT64.
• Seventeen of eighteen sampled addresses returned a name, all of the same shape: 0.16.28.72.scpe.echoes.net, 254.47.28.72.scpe.echoes.net, 190.16.172.23.scpe.echoes.net.
• The AS is held under the handle ADAMS-CATV, a name that appears nowhere in the registrations.

Interesting

• Writing the octets in reverse order mirrors how the reverse lookup itself is structured, so the answer restates the question with a different suffix. It is the least ambiguous scheme in this range and the least readable.
• Because each octet is its own label, the names inherit any policy applied at the third or fourth level, and a wildcard placed one level up would cover an entire block at once.
• A netname declaring NAT64 on a /24 is a provider running IPv6-only customers and translating their traffic to reach the older internet. One small block absorbs all of it, which is the point.
• The handle preserves a cable operator's name that the registrations have moved past. Handles are assigned once and rarely revisited, so they end up as the oldest surviving label on a network.
• A single neighbour on 28,928 addresses means one upstream and no alternative path.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 23.172.16.0/24
• 68.70.0.0/19
• 72.28.0.0/18
• 199.96.176.0/21
• 199.192.136.0/22
• 199.241.168.0/22
• 2607:3e00::/32

Upstream networks

• AS3737 PenTeleData Inc.

Adjacent networks

• AS3737 PenTeleData Inc.

Internet exchanges

• DE-CIX New York — New York, United States
• Equinix Internet Exchange Chicago — Chicago, United States
• DE-CIX Chicago — Chicago, United States
• Digital Realty New York Internet Exchange — New York, United States