Autonomous system
AS5671 PBI-NET-BLK
Unclassified ARIN
Summary
AT&T Enterprises
enterprise isp legacy
PBI-NET-BLK is one of a pair of ASNs — with
[AS5672](https://asn.ipinfo.app/AS5672) — held by AT&T Enterprises, LLC. The
handle is short for Pacific Bell Internet, the ISP arm of the California
telco that was folded into SBC and then AT&T.
What it's used for
- Announcing legacy
198.225.0.0space plus a block of dedicated-access addresses, which reverse-resolve underded.swbell.net— the naming AT&T uses for dedicated business circuits rather than consumer lines.
Notable
- The address space serves AT&T's business customers, so this is closer to an enterprise-access network than to a residential eyeball one.
- Both AS5671 and AS5672 were registered to Pacific Bell in 1995 and were carried intact through the SBC and AT&T mergers, which is why two adjacent low ASNs share an identical name and organisation today.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Address space
Summary
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS5671- Registry name
- PBI-NET-BLK
- Registrant
- AT&T Enterprises, LLC
- Abuse contact
- abuse@att.net
- Registered
- 1995-08-10
- Last changed
- 2024-12-05
- Status
- active
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
No IC3 indicators Nothing from the FBI IC3 feed.
Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere