asn.dev

Autonomous system

AS58862 MCCL-CHN Microsoft China Co., Ltd.

Unclassified ARIN

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

Summary

Microsoft (China) Co., Ltd.

China · AI-generated

business corporate china microsoft

MCCL-CHN is the autonomous system for Microsoft (China) Co., Ltd.

What it's used for

  • The address space carries corporate infrastructure, identified by the netname MCCL-CHN and registrant IRT-MCCL-CHN-CN.
  • The AS announces 1024 IPv4 addresses across 1 prefix (167.220.244.0/22) with 2 observed neighbours, indicating a small, internally segmented corporate estate rather than a transit or access network.
  • Traffic from this AS consists of Microsoft's internal office workers, development endpoints, and corporate services operating within China.

Notable

  • The registrant IRT-MCCL-CHN-CN aligns directly with the announcer MCCL-CHN, confirming consistent ownership.
  • The inventory consists of a single /22 block, representing a compact and specific allocation for the company's Chinese operations.

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

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

ASNetworkPaths seen
AS24400Shanghai Mobile Communications Co.,Ltd.60
AS4847China Networks Inter-Exchange59

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, 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 1 prefixes · 1.02K addresses IPv6 0 prefixes

CountryNamePrefixes
CNChina1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS58862
Registry name
MCCL-CHN
Abuse contact
abuse@microsoft.com
Registered
2013-05-03
Last changed
2023-11-28
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
1 authorising AS58862
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
3 naming AS58862

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 1,778 prefixes, as published 2026-10-20. 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