AS12130 — BANDWIDTH-

AS12130 announces 6 IPv4 prefixes covering 8,960 addresses and 0 IPv6 prefixes.

About this network

Bandwidth is a US communications platform provider, selling voice, messaging and emergency calling as APIs to other companies rather than to end users.

What it's used for

• Carrying the voice and messaging infrastructure behind other people's products. Most netnames read BWCOM-NETOPS-BLK, marking the space as network operations rather than customer assignment.

Notable

• The reverse DNS names the site: 208.94.157.255.ptr.den.dashcs.net and 208.94.158.254.ptr.atl.dashcs.net, with den and atl for Denver and Atlanta. The domain is dashcs.net, from Dash Carrier Services, the carrier entity Bandwidth operates under.
• Only 9,000 addresses across six prefixes. A voice platform needs very little address space compared to its traffic, because a call is a small amount of state on a media server rather than a per-user address.
• One block sits in RIPE rather than ARIN, registered to UK Bandwidth Limited under the netname UK-BANDWIDTH-20190523 — the company's British arm, assigned in May 2019.

Interesting

• Naming POPs by airport code in reverse DNS is a habit inherited from the telephone network, where every switch had a location code. It survives because it is genuinely useful: when a call has a problem, the traceroute tells you which city to look in.

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

Announced prefixes

• 67.231.0.0/20
• 109.71.152.0/23
• 208.94.156.0/22
• 216.82.224.0/21
• 216.82.232.0/24
• 216.82.236.0/22

Upstream networks

• AS198949 Radware Ltd
• AS6461 Zayo Bandwidth
• AS3356 Level 3 Parent, LLC
• AS2914 NTT America, Inc.
• AS6453 TATA COMMUNICATIONS (AMERICA) INC

Downstream networks

• AS41135 Voxbone SA

Adjacent networks

• AS198949 Radware Ltd
• AS41135 Voxbone SA
• AS6461 Zayo Bandwidth
• AS3356 Level 3 Parent, LLC
• AS2914 NTT America, Inc.
• AS6453 TATA COMMUNICATIONS (AMERICA) INC

Internet exchanges

• Equinix Internet Exchange Dallas — Dallas, United States
• Digital Realty Atlanta Internet Exchange — Atlanta, United States
• Equinix Internet Exchange Los Angeles — Los Angeles, United States
• Digital Realty New York Internet Exchange — New York, United States
• Equinix Los Angeles IBX — Los Angeles, United States