asn.dev

Autonomous system

AS59243 CISL-AS-AP CROSS IT SOLUTIONS LIMITED

Unclassified APNIC

IPv4 addresses 7.68K 11 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly HK
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Cross IT Solutions Limited

Hong Kong · AI-generated

hosting datacenter dns cdn

CISL-AS-AP is operated by Cross IT Solutions Limited.

What it's used for

  • The address space carries infrastructure for secure data centers, DDoS protection, secure DNS, and CDN services, as indicated by the operator's business profile and netnames like CISL-HK.
  • The AS announces 7,936 IPv4 addresses across 12 prefixes with 4 observed neighbours, a ratio consistent with a hosting or infrastructure provider rather than a transit or access network.
  • Traffic from this AS consists of web/API endpoints, DNS resolution, and content delivery infrastructure supporting the operator's secure data center and CDN offerings.

Notable

  • Registrants for the majority of prefixes align with the announcer, listing CROSS IT SOLUTIONS LIMITED and Infozutek Corp as administrators under the CISL-HK netname.
  • Several prefixes are registered to third parties, including Maxsun Int'l Inc (MAXSUN-AS-AP) and SplunkNet Inc (SPLUNKNET-PH), indicating leased or hosted address space within the AS.
  • The inventory is a mix of /21, /22, /23, and /24 blocks, with the largest allocations being two /21s in the 159.117.0.0/16 range.

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

3 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS45474Nexusguard Pte. Ltd.459
AS59268QLINKS427
AS45531Jipfa Building, 3rd floor61

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 11 prefixes · 7.68K addresses IPv6 0 prefixes

CountryNamePrefixes
HKHong Kong11

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS59243
Registry name
CISL-AS-AP
Registrant
CROSS IT SOLUTIONS LIMITED
Abuse contact
abuse@crossits.com
Registered
2025-02-07
Last changed
2025-02-07
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 16 with no ROA
ROAs
0 authorising AS59243
ASPA
no ASPA record
IRR
94% registered · 15 of 16 announcements 1 other origin
Route objects
66 naming AS59243

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 1,772 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