asn.dev

Autonomous system

AS7961 RBC

Unclassified ARIN

IPv4 addresses 20.48K 8 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Raw Bandwidth Communications

United States · AI-generated

isp residential legacy

RBC is Raw Bandwidth Communications, Inc., a small independent broadband ISP based in San Bruno, California, serving the San Francisco Peninsula and parts of the wider Bay Area. Despite the handle, it has nothing to do with the Royal Bank of Canada.

What it's used for

  • DSL subscriber access. The rDNS is a textbook access pattern: m128-NN.dsl.rawbw.com and gw128-1.dsl.rawbw.com across 66.181.128.0/20 — per-line gateway and modem names on a dsl.rawbw.com zone.
  • Business DSL, Ethernet-over-Copper and colocation for local customers.
  • Legacy space from TSoft, an older Bay Area ISP whose network Raw Bandwidth absorbed — gw1.tsoft.net, ns.tsoft.net and shell.tsoft.com still resolve inside 198.144.192.0/19.

Notable

  • This is a genuine eyeball / access network, just a very small one: a few tens of thousands of addresses in total. Addresses here are end-user lines, mixed residential and small-business, not servers.
  • Its prefixes are its own ARIN assignments and carry consistent first-party rDNS, which is what separates a real small ISP from a leased-address operation.

Interesting

  • Raw Bandwidth has been serving the Peninsula since 1997 — the same year the AS number was registered — and is one of the last surviving independent DSL ISPs from the era when CLEC copper unbundling made hundreds of them possible.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS40393Crosslink Networks LLC195
AS23308UTILITY TELEPHONE, INC.177

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-20, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 8 prefixes · 20.48K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America8

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS7961
Registry name
RBC
Registrant
Raw Bandwidth Communications, Inc.
Abuse contact
abuse@rawbandwidth.com
Registered
1997-03-06
Last changed
2012-02-24
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 6 with no ROA
ROAs
0 authorising AS7961
ASPA
no ASPA record
IRR
100% registered · 6 of 6 announcements
Route objects
25 naming AS7961

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 1,778 prefixes, as published 2026-10-20. 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

Cross-check