Autonomous system
AS10381 SWCP-AS
Unclassified ARIN
Summary
Southwest Cyberport (SWCP)
SWCP-AS belongs to Southwest Cyberport, an independent Albuquerque, New Mexico internet company that has been trading since 1994 and now sells access, web hosting, virtual servers, colocation and email alongside old-school IT support.
What it's used for
RIS observes 10 IPv4 prefixes carrying 22,016 addresses plus a single IPv6 /32 (2001:1800::/32). The v4 side is a museum of a long-lived regional ISP: a /19 at 216.184.0.0, three /20s at 64.42.128.0, 64.42.160.0 and 69.49.160.0, then a scattering of /24s picked up over the years.
The sampled reverse DNS is what makes the role legible. Some names are the operator's own infrastructure (tc1-104.swcp.com is a terminal-concentrator name left over from dial-up; 216.184.16.5.unused.swcp.com is literally unassigned inventory). Others are customer names living directly in SWCP space: server.americanabooks.com, Mercury.i-pi.com, wireless-gw4-e1.nmia.com. Customer-branded hosts inside the ISP's own blocks mean hosted and colocated servers, not subscriber CPE.
Notable
Two observed BGP neighbours rules out any transit role. This is a small multi-homed regional provider, not a carrier. The mix of hosting rDNS and access-era infrastructure names is typical of the surviving 1990s independents: the dial-up business evaporated, and what kept the lights on was hosting, colocation and business connectivity for local customers who wanted a phone number that a human answers.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 9 prefixes · 21.76K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 10 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS10381- Registry name
- SWCP-AS
- Registrant
- Southwest Cyberport, Inc.
- Abuse contact
- noc@swcp.com
- Registered
- 1997-07-17
- Last changed
- 1998-12-23
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 11 with no ROA
- ROAs
- 0 authorising AS10381
- ASPA
- no ASPA record
- IRR
- 73% registered · 8 of 11 announcements 1 other origin
- Route objects
- 9 naming AS10381
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: 447 networks and 1,845 prefixes, as published 2026-10-31. 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