AS15157 — NORWORLD

AS15157 announces 2 IPv4 prefixes covering 768 addresses and 0 IPv6 prefixes.

About this network

A carrier netname that writes the address in hexadecimal, with a counter on the end.

What it's used for

• A utility company's network. Two IPv4 prefixes announced from the United States, no IPv6, and three observed BGP neighbours.

Notable

• One block carries the netname SPRINT-CE6BEB5, where the six hexadecimal characters after the carrier's name decode to the first three octets of the /24 it labels, and the final character is a counter.
• The other carries the bare product name SPRINTLINK, with no address and no counter at all.
• Both blocks are registered to the holder, written entirely in capitals, while the AS handle uses an abbreviation that appears nowhere else in the record.
• Six addresses were queried for reverse DNS and none returned a name.

Interesting

• This is the second holder in this range whose blocks carry hexadecimal addresses inside a carrier's netname, and it settles what the scheme is: the same carrier applies it across unrelated customers, six characters for the network and a trailing digit to distinguish assignments from the same range.
• Nothing marks the string as hexadecimal, so it reads as noise unless you already know the convention. A netname that encodes an address without saying so is worse than one that spells it out, because nobody thinks to decode it.
• Two blocks, three upstreams, no reverse names, and an AS handle matching neither the company nor its netnames. The routing is the only field that describes this network accurately.

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

Announced prefixes

• 199.3.108.0/23
• 206.107.235.0/24

Upstream networks

• AS13576 SDN Communications
• AS174 Cogent Communications, LLC

Adjacent networks

• AS13576 SDN Communications
• AS174 Cogent Communications, LLC