Autonomous system
AS23357 -Reserved AS-
Unclassified ARIN
Summary
CyberXpress, Inc.
business legacy small
The AS handle is -Reserved AS- and the holder is CyberXpress, Inc.
What it's used for
- The address space is registered under netnames
TWTC-CYX7,TWTC-CYX2,TWTC-CYX4,TWTC-CYX5, andTWTC-CYX6, all attributed to CyberXpress, Inc. - The AS announces 1792 IPv4 addresses across 6 prefixes with 1 observed neighbour, a ratio consistent with a small, isolated business network rather than a transit or large access provider.
Notable
- All six announced prefixes list CyberXpress, Inc. as the registrant, matching the AS holder identity.
- The inventory consists of a single /23 block and five /24 blocks, indicating a modest, fragmented address allocation.
- The AS was first seen in routing tables in 2002, suggesting a long-standing but small-scale presence.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS17378 | TierPoint, LLC | 413 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 6 prefixes · 1.79K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| Unknown | 6 |
Registry
Allocation record
- Registry
- ARIN
- Allocation
- reserved
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 7 with no ROA
- ROAs
- 0 authorising AS23357
- ASPA
- no ASPA record
- IRR
- 100% registered · 7 of 7 announcements
- Route objects
- 8 naming AS23357
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 1,852 prefixes, as published 2026-10-27. 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