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Data as of Nov 5, 2026

221.3.140.0/22

No anonymizer space · no proxy exits in 30 days

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

Announcement
this exact prefix
RPKI valid
Announced by
AS4837
Type
Business
91% of it

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
221.3.128.0/17
since May 2005
AS4837Residential43
2 always on
China Unicom Yunnan 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
221.3.128.0/1732,768UNICOM-YNChina Unicom Yunnan province networkALLOCATED PORTABLE—hqs-ipabuse@chinaunicom.cn
└ 221.3.140.0/2732FINANCE-ECONOMICS-UNIVERSITYYunnan University of Finance and EconomicsASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.140.32/2732RADIO-COMMERCE-COMPANYYunnan Kunming Radio Commerce CommpanyASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.140.64/2732YUNNAN-NORMAL-UNIVERSITYYunnan Normal UniversityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.140.96/2732YUNNAN-DRUG-ADMINISTRATIONthe department of yunnan drug administrationASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.140.128/2732KUNMING-YIWANGTIANDI-NETWORKYiwangtiandi Network of Yunnan,kunmingASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.140.160/2732KUNMING-HUAJIAN-NETWORKHuajian Network of Yunnan,kunmingASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.140.192/298KUNMING-HANGBO-NETBARHangbo Netbar of Yunnan,kunmingASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.140.200/298KUNMING-ZHONGLIANGWANGSHENG-COMPANYZhongliangwansheng Networ of Yunnan,kunmingASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.140.208/2816DISCIPLINE-INSPECTION-COMMITTEEthe Discipline inspection committee of China,YunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.140.224/298YUNNAN-KUNMING-WATERWORKSWaterworks of Yunnan,KunmingASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.140.232/298STOCKS-SURVEILLANCE-COMMITTEEthe Stocks Surveillance Committee of China,YunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.140.240/2816KUNMING-JINFENG-SOFTJinfeng Soft Company,yunnan,kunmingASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.141.0/2816PANLONGYUNHAI-MEDICINE-COMPANYThe Panlongyunhai Medicine Commpany of Yunnan,KunmingASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.141.32/2732KUNMING-KERUIXIANG-NETWORKKeruixiang Network Company,yunnan,kunmingASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.141.64/2732KUNMING-FAHAI-SOFTWAREFEIANTE Software design COMPANY,YUNNAN,KUNMINGASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.141.96/2732KUNMING-MUZI-NETBARMuzi Netbar of Yunnan,kunmingASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.141.128/2732KUNMING-TONGXIN-NETBARTongxin Netbar of Yunnan,kunmingASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.141.160/2732YUNNAN-KUNMING-UNIVERSITYYunnan Kunming UniversityASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.0/2732KUNMING-JINDIE-SOFTWAREJindie Software Company of Yunnan,kunmingASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.32/2732yn-km-DongZhan-pacific-stockjobberyunnan kunming DongZhan pacific stockjobber,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.64/2732yn-km-YT-medical-factoryyunnan kunming YT medical factory,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.96/2732YUNNAN-HIGHWAYANDBRIDGE-COMPANYthe Highway&bridge Company of Yunnan ProvinceASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.128/298yn-km-HengHe-stockjobberyunnan kunming HengHe stockjobber,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.136/298yn-km-JingBi-agriculture-bankyunnan kunming JingBi agriculture bank,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.144/298yn-km-JianQiao-foreign-language-training-schoolyunnan kunming JianQiao foreign language training school,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.152/298yn-km-LeiLei-art-schoolyunnan kunming LeiLei art school,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.160/2732YUNNAN-KUNMING-FIRESTATIONThe Fire Station of YunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.192/2732YUNNAN-YUNCHENG-FUTURESYuncheng Futures of Yunnan ProvinceASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.224/2816YUNNAN-TEXTILEPROCESS-GROUPthe Textile Process Group of Yunnan ProvinceASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.142.248/298yn-km-NanTian-DEVELOPMENT-CORPyunnan kunming NanTian DEVELOPMENT CORP,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.0/2816YUNNAN-GUOHAO-COMMUNICATIONthe Guohao Communication Company of Yunnan ProvinceASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.16/2816YUNNAN-BINGHAI-FUTURESthe Binghai Futures of Yunnan ProvinceASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.32/2732KM-paper-millKM-paper-mill,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.64/2732KUNMING-INFORMATION-INSTITUTEKunming Technology and Information InstituteASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.96/2816YUNNAN-RISHENG-FUTURESRisheng Commerce Futures of Yunnan ProvinceASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.112/2816YUNNAN-BRIDGE-COMPANYYunnan Highway and Bridge CompanyASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.128/2732KM-materials-companyKM-materials-company,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.160/2732KM-food-products-factoryKM-food-products-factory ,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.192/2732KM-biological-devolepment-companyKM-biological-devolepment-company,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.224/2816KM-ST-computer-companyKM-ST-computer-company,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.240/298KM-tuchang-foreign-trade-companyKM-tuchang-foreign-trade-company,kunming,yunnanASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN
└ 221.3.143.248/298TIANDA-COMMUNICATION-COMPANYYunnan Tianda Communication CompanyASSIGNED NON-PORTABLE—hqs-ipabuse@chinaunicom.cn
via UNICOM-YN

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

1,024 addresses
TypeAddressesShareRanges
Business93691%42
Residential888.6%3

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