asn.dev

Autonomous system

AS25623 CISN2

Unclassified ARIN

IPv4 addresses 1.02K 4 prefixes
IPv6 prefixes 4 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 1 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

TowardEX Technologies International

United States of America · AI-generated

business enterprise backbone

The AS handle CISN2 is held by TowardEX Technologies International, Inc.

What it's used for

  • The address space carries internal corporate and backbone infrastructure, evidenced by netnames like TWDX-CISN-NETBLK-1 and TowardEX Technologies Internal/Backbone.
  • Reverse DNS entries include station-c772f9be.ops.twdx.net and packetsurge.net hosts, indicating operational and service endpoints.
  • With 1024 IPv4 addresses and 4 IPv6 prefixes announced against only 2 observed neighbours, the ratio suggests a focused enterprise or internal network rather than a large-scale transit provider.

Notable

  • Registrants are consistent with the announcer, including TowardEX Technologies International, Inc., TOWARDEX Information Systems Network (CISN), and TowardEX Technologies Internal/Backbone.
  • One prefix, 162.219.97.0/24, is registered to Open Contributors Corporation for Advanced Internet Development, Inc., which may indicate leased space or historical allocation.
  • The inventory consists of four distinct IPv4 /24 blocks and four IPv6 prefixes, showing a finely subdivided internal estate.

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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
Massachusetts Internet ExchangeBoston, United States206.53.143.92

Transit providers

2 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS22147Open Contributors Corporation for Advanced Internet Development, Inc.212
AS27552TowardEX Technologies International, Inc.148

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, 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 4 prefixes · 1.02K addresses IPv6 4 prefixes

CountryNamePrefixes
USUnited States of America8

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS25623
Registry name
CISN2
Registrant
TowardEX Technologies International, Inc.
Abuse contact
abuse@twdx.net
Registered
2007-10-17
Last changed
2013-07-25
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 8 valid, 0 with no ROA
ROAs
8 authorising AS25623
ASPA
no ASPA record
IRR
50% registered · 4 of 8 announcements 2 other origin
Route objects
4 naming AS25623

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 1,782 prefixes, as published 2026-10-16. 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