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Data as of Nov 10, 2026

221.238.237.0/24

No anonymizer space · no proxy exits in 30 days

ASN for TIANJIN Provincial Net of CT · space held by Chinanet Tianjin Province Network

Announcement
this exact prefix
RPKI valid
Announced by
AS17638
Type
Residential
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
221.238.192.0/18
since May 2005
AS17638Residential205
1 always on
Chinanet Tianjin 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
221.238.0.0 - 221.239.127.25598,304CHINANET-TJChinanet Tianjin Province NetworkALLOCATED PORTABLE—anti-spam@chinatelecom.cn
└ 221.238.237.4/304TIANJIN-KANGFEISHIYOU-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.32/2816TIANJIN-TIANDILIANXIAN-LTDunknownASSIGNED NON-PORTABLE—anti-spam@chinatelecom.cn
via CHINANET-TJ
└ 221.238.237.48/298TIANJIN-KANGFEISHIYOU-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.56/298TIANJIN-ZHONGAOCHENGGONG-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.64/298TIANJIN-XINFENGYOUTIAN-LTDunknownASSIGNED NON-PORTABLE—anti-spam@chinatelecom.cn
via CHINANET-TJ
└ 221.238.237.72/298TIANJIN-ZHONGYOUBOHAIZUANTAN-LTDunknownASSIGNED NON-PORTABLE—anti-spam@chinatelecom.cn
via CHINANET-TJ
└ 221.238.237.88/304TIANJIN-ZHILIHEZUO-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.96/298TIANJIN-NAERKE-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.104/298TIANJIN-MAOYIZHONGCAI-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.112/304TIANJIN-QILU-BANKunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.120/298TIANJIN-SHIYOUTIANRANQIXIAOSHOU-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.128/298TIANJIN-SHOUGANGGUOJIMAOYI-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.136/298TIANJIN-JINLIANZILAISHUI-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.144/298TIANJIN-RUNHUANONGSHUI-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.152/298TIANJIN-SHENGTAICHENG-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.160/298TIANJIN-LIANFA-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.168/298TIANJIN-KAINAMU-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.176/298TIANJIN-HUARUNDIANLI-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.184/298TIANJIN-ZHONGGUOJIANZHUYIJU-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.192/298TIANJIN-SICHUANWOTESHIZHENG-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.200/298TIANJIN-JINBINLIANHEWUYE-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.208/298TIANJIN-SHENGTAICHENGYUANXIONGTOUZI-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.216/298TIANJIN-BAOJIANGWULIU-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.cn
└ 221.238.237.224/2732TIANJIN-BINHAIDIANXIN-LTDunknownASSIGNED NON-PORTABLE—baijian.tj@chinatelecom.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
Origin network

AS17638

CN
Name
ASN for TIANJIN Provincial Net of CT
Type
Internet provider
Registered
Nov 18, 2002
Domain
cndata.com
Industry
Computer and Information Technology
Spamhaus ASN-DROP
not listed