asn.dev

Autonomous system

AS37965 CNNIC-PBSL-AP Pacnet Business Solutions LTD

Unclassified APNIC

IPv4 addresses 22.27K 38 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CN
Exchanges 0 recorded by PCH
Upstreams 5 0 downstream
Flagged prefixes 0 none

Summary

Pacnet Business Solutions

China · AI-generated

business enterprise china ipv4

The AS handle CNNIC-PBSL-AP is held by Pacnet Business Solutions LTD.

What it's used for

  • The address space carries enterprise traffic, evidenced by reverse DNS records pointing to static.user.*.zhong-ren.net and netnames registered as PBSL.
  • The network announces 22,272 IPv4 addresses across 38 prefixes and 1 IPv6 prefix, while maintaining only 4 observed neighbours, indicating a role focused on serving specific enterprise clients rather than general transit.
  • Traffic from this AS consists of connectivity and managed services for multinational enterprises and governments, consistent with the operator's business profile as a provider of IP Virtual Private Networks and data centre solutions.

Notable

  • All sampled registrants are listed as IRT-PBSL-CN with the netname PBSL, which aligns directly with the AS holder Pacnet Business Solutions LTD.
  • Pacnet Business Solutions is a joint venture in China associated with Pacnet, which was acquired by Telstra; the acquisition included interests in this domestic IP Virtual Private Network licensee.
  • The inventory is concentrated in the 222.126.0.0/16 range, with the largest block being 222.126.248.0/21, and the address space is finely subdivided into numerous /22 and /23 prefixes.

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

5 upstream, 0 downstream and 6 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS7468Cyber Express Communication Ltd.2,742
AS24400Shanghai Mobile Communications Co.,Ltd.1,446
AS17621China Unicom Shanghai network123
AS9812Oriental Cable Network Co., Ltd.2
AS56040China Mobile communications corporation2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 38 prefixes · 22.27K addresses IPv6 1 prefixes

CountryNamePrefixes
CNChina39

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS37965
Registry name
CNNIC-PBSL-AP
Abuse contact
ipas@cnnic.cn
Registered
2008-09-04
Last changed
2021-06-16
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 96 valid, 0 with no ROA
ROAs
79 authorising AS37965
ASPA
no ASPA record
IRR
82% registered · 79 of 96 announcements
Route objects
159 naming AS37965

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 1,771 prefixes, as published 2026-10-15. 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