Autonomous system
AS21973 XPONET
Unclassified ARIN
Summary
Xponet
business enterprise legacy
The AS handle XPONET is held by Xponet.
What it's used for
- The address space carries legacy UUNET and Verizon Business infrastructure, as indicated by netnames such as
UUNET63,VZ, andUU-63-85-164. - The AS announces 3840 IPv4 addresses across 11 prefixes and 4 IPv6 prefixes, with 6 observed neighbours, suggesting a small-scale enterprise or legacy network footprint.
Notable
- Registrants are predominantly Xponet, with the largest block
63.85.4.0/22registered to Verizon Business under the netnameUUNET63, reflecting historical ownership transitions. - The inventory consists of finely subdivided /24 and /23 blocks, consistent with an internal corporate estate rather than a broad access network.
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 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 10 prefixes · 3.58K addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 13 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS21973- Registry name
- XPONET
- Registrant
- Xponet
- Abuse contact
- netops@xpodigital.com
- Registered
- 2013-04-03
- Last changed
- 2013-04-03
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 17 with no ROA
- ROAs
- 0 authorising AS21973
- ASPA
- no ASPA record
- IRR
- 100% registered · 17 of 17 announcements
- Route objects
- 38 naming AS21973
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 1,783 prefixes, as published 2026-10-17. 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