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Data as of Nov 9, 2026

172.81.101.0/24

No anonymizer space · no proxy exits in 30 days

Hong Kong Communications International Co., Limited · space held by Prime Security Corp.

Announcement
this exact prefix
RPKI valid
Announced by
AS140227
Type
Hosting
Risk
50 / 100 · Medium
Recent change
New origin Jun 2026
from AS140227 Hong Kong Communications International Co., Limited

Announcements

Less specific

Covering announcements

PrefixOriginTypeHolderRPKI
172.81.100.0/23
since Jul 2025
AS140227HostingPrime Security Corp.

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
172.81.96.0/204,096PSC-594Prime Security Corp. (PSC-594) · USDirect AllocationSep 5, 2023abuse@primesecuritycorp.com
└ 172.81.100.0/23512UDCHong Kong Communications International Co., Limited (C10485173) · HKReassignedNov 30, 2023abuse@primesecuritycorp.com
via PSC-594

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Registry

Holder

Organization
Prime Security Corp.
Handle
PSC-594
Range
172.81.96.0/20
Registration type
Direct Allocation
Record created
Sep 5, 2023
Origin network

AS140227

HK
Name
Hong Kong Communications International Co., Limited
Type
Hosting
Registered
Feb 21, 2020
Domain
udc.hk
Website
www.udc.hk
Industry
Hosting and Cloud Provider
Spamhaus ASN-DROP
not listed