AS6688 — ATT-GCH-VOI-LA-AS VoIP platform - ex Concert

AS6688 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

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 /24 of 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.

Announced prefixes

• 193.41.109.0/24

Upstream networks

• AS2686 AT&T Enterprises, LLC

Adjacent networks

• AS2686 AT&T Enterprises, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 1 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 0 route objects.
• Listed in as-sets: AS-IGNEMEA.