Autonomous system
AS6688 ATT-GCH-VOI-LA-AS VoIP platform - ex Concert
Unclassified RIPE
Summary
AT&T Global Network Services (VoIP platform, Los Angeles)
enterprise legacy
ATT-GCH-VOI-LA-AS is the Los Angeles half of a pair of small AT&T Global Network Services autonomous systems carrying a VoIP platform. The registrant is AT&T Global Network Services Nederland B.V., the Dutch entity holding this legacy RIPE space.
What it's used for
- A single
/24of infrastructure address space for a voice-over-IP platform, not subscriber or customer addressing. - The San Francisco counterpart is AS6686, on the adjacent
/24.
Notable
- RIPE records the platform as ex-Concert — the AT&T/BT global joint venture launched in 1998 and dissolved in 2002, whose network assets were split back to the two parents. The handle preserves that lineage decades later.
- A carrier service-platform AS: small, static, and not an eyeball or transit network.
Interesting
- Two consecutive-ish AS numbers, two coasts, two adjacent
/24s — an east/west redundancy pair visible entirely from registry and routing data.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS2686 | AT&T Enterprises, LLC | 60 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 256 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| NL | Netherlands | 1 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS6688- Registry name
- ATT-GCH-VOI-LA-AS
- Registrant
- MAINT-AS2686
- Abuse contact
- peering@intl.att.com
- Registered
- 2003-09-24
- Last changed
- 2020-09-25
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS6688
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 1 announcements 1 other origin
- Route objects
- 0 naming AS6688
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,773 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere