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Data as of Nov 5, 2026

221.2.225.0/24

No anonymizer space · no proxy exits in 30 days

CHINA UNICOM China169 Backbone · space held by China Unicom Shandong province network

Announcement
this exact prefix
RPKI valid
Announced by
AS4837
Type
Business
94% of it
Recent change
New origin May 2026
its first announcement on record

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
221.2.0.0/16
since May 2005
AS4837Residential173
14 always on
China Unicom Shandong province 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
221.0.0.0 - 221.3.127.255229,376UNICOM-SDChina Unicom Shandong province networkALLOCATED PORTABLE—hqs-ipabuse@chinaunicom.cn
└ 221.2.225.0/304DY-zhkdDongYing-zhonghangkuandaiASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.4/304DY-tcwbDongYing-ticaiwangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.8/298DY-xxwbDongYing-xixiwangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.16/298DY-dmdsDongYing-damingdashaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.24/304DY-jywbDongYing-juyouwangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.28/304DY-sdkjyDongYing-shidakejiyuanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.32/298DY-zcwbDongYing-zhongchengwangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.40/298DY-tlyDongYing-taolinyuASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.48/298DY-dljsdsgsunknownASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.56/304DY-slfdcDongYing-shenglifadianchangASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.64/304DY-xydjd2DongYing-xinyuedajiudian2ASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.68/304DY-byfdDongYing-baiyunfandianASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.72/298DY-zjpxzxDongYing-zuanjingpeixunzhongxinASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.80/304DY-ygwxDongYing-yangguangwangxiaoASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.88/304DY-lzwbDongYing-lianzhongwangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.92/304DY-xhwbDongYing-xinghewangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.96/2816DY-dyqxxzxunknownASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.112/298DY-syxxDongYing-shiyouxuexiaoASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.120/304DY-xgxwbDongYing-xinganxianwangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.128/298DY-sydxwlzxunknownASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.136/304DY-lscbkDongYing-liangshichubeikudanweiASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.140/304DY-lscbkunknownASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.144/304DY-wdwbDongYing-weidawangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.148/304DY-wgzdDongYing-wangguanzhongduanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.152/298DY-safwlDongYing-shenganfuwulouASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.160/304DY-ytkmDongYing-youtiankemaoASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.164/304DY-xywbDongYing-xingyuwangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.168/304DY-tywbDongYing-tianyuanwangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.172/304DY-hywbDongYing-hongyuanwangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.176/304DY-sydxDongYing-shiyoudaxueASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.180/304DY-shwbDongYing-shenghuawbASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.184/304DY-zyxxDongYing-zhiyexuexiaoASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.188/304DY-xcbgDongYing-xichengbinguanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.192/304DY-hkhgDongYing-haikehuagongASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.196/304DY-yfbxDongYing-yangguangbaoxianASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.200/304DY-hhfdDongYing-huanghefandianASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.204 - 221.2.225.21916DY-sldstDongYing-shenglidianshitaiASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.224/304DY-sjjfDongYing-shujujifangASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.228/304DY-fywbDongYing-fengyuwangbaASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.232/304DY-xcckjfDongYing-xichengchengkongASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.236/304DY-jmgsDongYing-junmagongsiASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.240/298DY-lhsyyxgsDongYing-lihaishiyougongsiASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD
└ 221.2.225.248/298DY-ytwxDongYing-youtianweixiaoASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-SD

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

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

256 addresses
TypeAddressesShareRanges
Business24094%43
Residential166.3%4

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS4837

CN
Name
CHINA UNICOM China169 Backbone
Type
Internet provider
Registered
Sep 17, 2001
Domain
chinaunicom.cn
Website
www.chinaunicom.cn/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed