210.51.42.0/24

AS17621 · China Unicom Shanghai network

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Summary

Country	China
Domain	china-netcom.com
ASN	AS17621
Parent Range	210.51.0.0/16
Registry	APNIC
ID	CNC-SH-IDC

WHOIS Details

inetnum:        210.51.20.0 - 210.51.63.255
netname:        CNC-SH-IDC
country:        CN
descr:          Shanghai Caohejing IDC of China Netcom
admin-c:        CH140-AP
tech-c:         YQ87-AP
status:         ALLOCATED NON-PORTABLE
changed:        cncipaddr@china-netcom.com 20040227
mnt-by:         MAINT-CN-ZM28
mnt-lower:      MAINT-CN-SHIDC
source:         APNIC

role:           CNCIDC hostmaster
address:        No.1,Beihuan Donglu,BDA,Beijing,China
country:        CN
phone:          +8610 6787 5599
fax-no:         +8610 6787 8624
e-mail:         cncipaddr@china-netcom.com
remarks:        send spam and abuse reports to tech-group@china-netcom.com
remarks:        Please include detailed information and times in UTC
admin-c:        TJ35-AP
tech-c:         TC254-AP
nic-hdl:        Ch140-AP
notify:         cncipaddr@china-netcom.com
mnt-by:         MAINT-CN-ZM28
changed:        hm-changed@apnic.net 20040226
source:         APNIC
changed:        hm-changed@apnic.net 20111114

person:         yanping qian
nic-hdl:        YQ87-AP
e-mail:         qianyp@china-netcom.com
address:        shanghai IDC of China Netcom
phone:          +86-021-58878899
fax-no:         +86-021-58878899
country:        cn
changed:        cncipaddr@china-netcom.com 20040227
mnt-by:         MAINT-CN-SHIDC
source:         APNIC

route:          210.51.0.0/16
descr:          CNC Group CncNet
country:        CN
origin:         AS9929
mnt-by:         MAINT-CNCGROUP-RR
changed:        abuse@cnc-noc.net 20060330
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 210.51.42.0/24

Range	ASN	Company	Num of IPs
210.51.0.0/16	AS9929	China Unicom IP network	65,536

Nearby Ranges

BGP prefixes that overlap with 210.51.0.0/16

Range	ASN	Company	Num of IPs
210.51.0.0/16	AS9929	China Unicom IP network	65,536
210.51.216.0/21	AS9929	Nanjing Banglian Television	2,048
210.51.230.0/23	AS9929	East Communication Co.	512
210.51.232.0/23	AS9929	NO.121 Fucheng Road,Mianyang,	512
210.51.229.0/24	AS9929	Jianghan Oil filed Communication	256
210.51.185.0/24	AS4808	CNC S-IDC YIZHUANG	256
210.51.241.0/24	AS9929	SuTian Broadcast Television	256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
210.51.42.190	zhangshanwanju.cn	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

2 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
210.51.42.31	AS17621 China Unicom Shanghai network	`3.47ms` from Shanghai, CN

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
176.43.235.248	AS34984 Superonline Iletisim Hizmetleri A.S.	`5.31ms` from Ankara, TR
35.194.85.168	AS396982 Google LLC	`0.13ms` from Ashburn, US
188.235.198.216	AS50544 JSC "ER-Telecom Holding"	`0.84ms` from Krasnoyarsk, RU
64.173.112.248	AS7018 AT&T Enterprises, LLC	`2.30ms` from Los Angeles, US
201.145.59.232	AS8151 UNINET	`1.80ms` from Mexico City, MX
82.55.243.72	AS3269 Telecom Italia S.p.A.	`4.28ms` from Naples, IT
179.130.66.232	AS26599 TELEFÔNICA BRASIL S.A	`6.45ms` from Osasco, BR
13.38.94.232	AS16509 Amazon.com, Inc.	`0.49ms` from Paris, FR
51.103.0.248	AS8075 Microsoft Corporation	`0.36ms` from Paris, FR
187.235.187.248	AS8151 UNINET	`4.72ms` from Santiago de Queretaro, MX
78.77.153.184	AS3301 Telia Company AB	`0.49ms` from Stockholm, SE
65.184.81.72	AS11426 Charter Communications Inc	`13.65ms` from Charlotte, US
45.25.59.248	AS7018 AT&T Enterprises, LLC	`8.51ms` from Chicago, US
107.11.138.136	AS10796 Charter Communications Inc	`8.04ms` from Columbus, US
23.197.124.168	AS16625 Akamai Technologies, Inc.	`0.41ms` from Duesseldorf, DE
3.73.244.232	AS16509 Amazon.com, Inc.	`0.17ms` from Frankfurt am Main, DE
122.13.24.8	AS136958 China Unicom Guangdong IP network	`2.17ms` from Guangzhou, CN
51.7.6.168	AS6871 Plusnet	`2.25ms` from London, GB
180.196.173.248	AS18126 Chubu Telecommunications Company, Inc.	`5.31ms` from Osaka, JP
211.58.214.24	AS9318 SK Broadband Co Ltd	`1.47ms` from Seoul, KR
84.1.221.216	AS5483 Magyar Telekom Plc.	`0.87ms` from Budapest, HU
75.186.29.152	AS10796 Charter Communications Inc	`8.78ms` from Columbus, US
200.91.83.248	AS11830 Instituto Costarricense de Electricidad y Telecom.	`2.16ms` from Curridabat, CR
66.182.213.136	AS20135 Millennium Telcom LLC	`1.52ms` from Dallas, US
52.228.160.72	AS8075 Microsoft Corporation	`0.19ms` from Des Moines, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f5 210.51.42.31

traceroute to 210.51.42.31 (210.51.42.31): 64 hops max, 52 byte packets

5 [AS212317] 5.78.0.85 0.42 ms

6 [AS3356] 4.36.13.29 1.195 ms

7 [AS3356] 4.69.209.165 15.155 ms

8 [AS3356] 4.53.209.22 263.879 ms

9 [AS4837] 219.158.97.177 271.481 ms

10 *

11 *

12 *

13 [AS17621] 112.64.243.186 271.975 ms

14 *

15 [AS17621] 210.51.42.31 287.458 ms

Measurement taken from

IPinfo ProbeNet in Hillsboro, US

On December 6th 2025

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