AS5672 — PBI-NET-BLK

AS5672 announces 4 IPv4 prefixes covering 5,376 addresses and 0 IPv6 prefixes.

About this network

PBI-NET-BLK is the twin of AS5671: both are held by AT&T Enterprises, LLC under the same handle, short for Pacific Bell Internet. AT&T inherited them via the SBC/Pacific Bell lineage.

What it's used for

• Announcing several prefixes out of AT&T's legacy 198.224.0.0–198.225.0.0 range, used for customer access rather than for AT&T's core backbone.

Notable

• AT&T runs its main transit and consumer networks from other, much larger ASNs; this pair is a legacy Pacific Bell artifact that stayed in service.
• Two adjacent ASNs with the same handle and the same organisation is unusual — it comes from a single 1995 registration event that produced both.

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

Announced prefixes

• 198.224.80.0/21
• 198.225.64.0/21
• 198.225.72.0/22
• 198.225.80.0/24

Upstream networks

• AS7018 AT&T Enterprises, LLC

Adjacent networks

• AS7018 AT&T Enterprises, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 5 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 0 route objects.