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Data as of Nov 4, 2026

210.51.45.0/24

No anonymizer space · no proxy exits in 30 days

CHINA UNICOM Industrial Internet Backbone · space held by China Unicom IP network

Announcement
this exact prefix
RPKI valid
Announced by
AS9929
Type
Internet provider
Risk
30 / 100 · Medium
Recently moved

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
210.51.0.0/16
since May 2005
AS9929Internet provider62China Unicom IP network

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
210.51.0.0/1665,536UNICOM-CNChina Unicom IP networkALLOCATED PORTABLE—[email protected]
└ 210.51.20.0 - 210.51.63.25511,264CNC-SH-IDCShanghai Caohejing IDC of China NetcomALLOCATED NON-PORTABLE—[email protected]
via UNICOM-CN

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
China Unicom IP network
Range
210.51.0.0/16
Registration type
ALLOCATED PORTABLE
Reallocated to
Shanghai Caohejing IDC of China Netcom
Reallocated range
210.51.20.0 - 210.51.63.255
Reallocation type
ALLOCATED NON-PORTABLE
Origin network

AS9929

CN
Name
CHINA UNICOM Industrial Internet Backbone
Type
Internet provider
Registered
Apr 5, 2000
Domain
chinaunicom.cn
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed