AS15260 — DWS-NY

AS15260 announces 3 IPv4 prefixes covering 768 addresses and 0 IPv6 prefixes.

About this network

Three netnames, three eras of the same company, including a retired online brand.

What it's used for

• A media company's corporate network. Three IPv4 /24 prefixes announced from the United States, no IPv6, and three observed BGP neighbours.

Notable

• One netname pairs the brand with a two-letter site code and a two-letter marker; another adds a region code, the same marker, a country code and a counter; the third names an online division that no longer exists, with a type word and a counter.
• One registrant is an internal architecture team rather than a company, followed by an abuse role after a semicolon.
• The other two registrants name the corporate services entity, matching the AS handle's first three letters.
• Nine addresses were queried for reverse DNS and none returned a name.
• Seven hundred and sixty-eight addresses is the entire announced footprint.

Interesting

• Three netnames for three blocks, each following a different convention, is a record assembled over decades. The site code, the region code and the retired division name each date their block more precisely than any timestamp field in the registry.
• A division brand surviving in a netname long after the product closed is the usual outcome. Netnames are never rewritten, because rewriting means reissuing the assignment, so the registry becomes an archive of discontinued businesses.
• Under a thousand addresses for a company of this size means almost everything public runs on infrastructure it does not route itself. This block is offices, not audiences.

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

Announced prefixes

• 139.104.71.0/24
• 157.23.244.0/24
• 198.105.192.0/24

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS7018 AT&T Enterprises, LLC

Downstream networks

• AS13379 Disney Worldwide Services, Inc.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS13379 Disney Worldwide Services, Inc.
• AS7018 AT&T Enterprises, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 3 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 67% of announcements registered; 2 route objects.
• Listed in as-sets: AS-UDOS.