183.172.0.0/17

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	183.172.0.0/14
Registry	APNIC
ID	BJR-CERNET

WHOIS Details

inetnum:        183.172.0.0 - 183.175.255.255
netname:        BJR-CERNET
descr:          China Education and Research Network
descr:          Beijing Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        NS2.NET.EDU.CN
remarks:        DNS.EDU.CN
remarks:        DNS2.EDU.CN
remarks:        origin AS4538
remarks:        confederation
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:13Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Research Center,
address:        Main Bldg, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
fax-no:         +86-10-62785933
e-mail:         abuse@cernet.edu.cn
abuse-mailbox:  abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        abuse@cernet.edu.cn was validated on 2025-08-15
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-11-18T00:26:28Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Research Center,
address:        Main Bldg, Tsinghua Univ
address:        Beijing 100084, China
phone:          +86-10-62784301
e-mail:         abuse@cernet.edu.cn
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        abuse@cernet.edu.cn was validated on 2025-08-15
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-15T09:38:28Z
source:         APNIC

role:           CERNET Helpdesk
address:        CERNET Center
address:        Beijing 100084, China
country:        CN
phone:          +86-10-6278-4049
fax-no:         +86-10-6278-5933
e-mail:         helpdesk@cernet.edu.cn
remarks:        abuse@cernet.edu.cn
admin-c:        XL1-CN
tech-c:         SZ2-AP
nic-hdl:        CER-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2020-09-03T09:14:12Z
source:         APNIC

route:          183.172.0.0/14
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-11-25T07:36:58Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 183.172.0.0/17

Range	ASN	Company	Num of IPs
183.172.0.0/14	AS4538	China Education and Research Network	262,144

Nearby Ranges

BGP prefixes that overlap with 183.172.0.0/16

Range	ASN	Company	Num of IPs
183.172.0.0/14	AS4538	China Education and Research Network	262,144

Hosted domains

There are 3 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

6,566 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
183.172.10.125	AS4538 China Education and Research Network Center	`6.17ms` from Tianjin, CN
183.172.14.180	AS4538 China Education and Research Network Center	`5.37ms` from Beijing, CN
183.172.3.33	AS4538 China Education and Research Network Center	`3.33ms` from Beijing, CN
183.172.8.3	AS4538 China Education and Research Network Center	`3.56ms` from Beijing, CN
183.172.11.42	AS4538 China Education and Research Network Center	`5.83ms` from Beijing, CN
183.172.12.199	AS4538 China Education and Research Network Center	`5.33ms` from Beijing, CN
183.172.9.253	AS4538 China Education and Research Network Center	`5.08ms` from Beijing, CN
183.172.13.132	AS4538 China Education and Research Network Center	`4.99ms` from Beijing, CN
183.172.21.214	AS4538 China Education and Research Network Center	`4.98ms` from Beijing, CN
183.172.93.254	AS4538 China Education and Research Network Center	`8.32ms` from Beijing, CN
183.172.106.60	AS4538 China Education and Research Network Center	`6.80ms` from Tianjin, CN
183.172.87.104	AS4538 China Education and Research Network Center	`4.51ms` from Beijing, CN
183.172.25.186	AS4538 China Education and Research Network Center	`5.90ms` from Beijing, CN
183.172.103.169	AS4538 China Education and Research Network Center	`24.36ms` from Xi'an, CN
183.172.50.196	AS4538 China Education and Research Network Center	`5.15ms` from Beijing, CN
183.172.39.75	AS4538 China Education and Research Network Center	`5.13ms` from Beijing, CN
183.172.76.117	AS4538 China Education and Research Network Center	`6.36ms` from Beijing, CN
183.172.71.188	AS4538 China Education and Research Network Center	`6.11ms` from Tianjin, CN
183.172.91.184	AS4538 China Education and Research Network Center	`8.12ms` from Tianjin, CN
183.172.79.170	AS4538 China Education and Research Network Center	`5.55ms` from Tianjin, CN
183.172.63.217	AS4538 China Education and Research Network Center	`5.96ms` from Beijing, CN
183.172.42.108	AS4538 China Education and Research Network Center	`5.52ms` from Beijing, CN
183.172.55.194	AS4538 China Education and Research Network Center	`4.77ms` from Beijing, CN
183.172.78.239	AS4538 China Education and Research Network Center	`5.91ms` from Beijing, CN
183.172.115.137	AS4538 China Education and Research Network Center	`5.19ms` from Beijing, 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
146.168.192.1	AS11776 Breezeline	`14.62ms` from Ashburn, US
96.117.48.1	AS7922 Comcast Cable Communications, LLC	`0.48ms` from Ashburn, US
190.193.208.1	AS7303 Telecom Argentina S.A.	`15.79ms` from Asuncion, PY
130.43.25.209	AS1241 Forthnet	`1.96ms` from Athens, GR
142.190.63.97	AS62632 Uniti Fiber Holdings Inc.	`6.24ms` from Atlanta, US
49.231.235.177	AS45458 SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX	`1.13ms` from Bangkok, TH
194.140.108.145	AS20676 Plusnet GmbH	`1.47ms` from Berlin, DE
20.230.98.49	AS8075 Microsoft Corporation	`0.27ms` from Boydton, US
188.80.208.1	AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	`3.77ms` from Braga, PT
92.84.15.1	AS9050 Orange Romania S.A.	`0.79ms` from Bucharest, RO
212.92.14.49	AS8990 4iG Telecommunications Holding Zrt	`0.33ms` from Budapest, HU
190.191.95.1	AS7303 Telecom Argentina S.A.	`1.27ms` from Buenos Aires, AR
222.160.254.1	AS4837 CHINA UNICOM China169 Backbone	`2.83ms` from Changchun, CN
174.110.32.1	AS11426 Charter Communications Inc	`5.60ms` from Charlotte, US
112.44.160.1	AS9808 China Mobile Communications Group Co., Ltd.	`4.92ms` from Chengdu, CN
216.120.155.81	AS46437 Fourway Computer Products, Inc.	`3.06ms` from Chicago, US
176.21.181.129	AS3292 TDC Holding A/S	`3.41ms` from Copenhagen, DK
72.215.245.225	AS22773 Cox Communications Inc.	`10.13ms` from Dallas, US
108.175.18.1	AS32798 Highline Services, LLC	`10.87ms` from Dallas, US
12.27.143.65	AS7018 AT&T Enterprises, LLC	`4.31ms` from Dallas, US
122.172.0.193	AS24560 Bharti Airtel Ltd., Telemedia Services	`7.46ms` from Delhi, IN
86.40.120.1	AS5466 Eircom Limited	`2.44ms` from Dublin, IE
194.9.168.1	AS24632 Markus Rosignol	`0.37ms` from Frankfurt am Main, DE
183.10.183.1	AS4134 CHINANET-BACKBONE	`9.30ms` from Guangzhou, CN
186.43.166.17	AS27668 ETAPA EP	`6.59ms` from Guayaquil, EC

Traceroute

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

traceroute -a -n -q1 -f6 183.172.52.56

traceroute to 183.172.52.56 (183.172.52.56): 64 hops max, 52 byte packets

6 [AS4538] 101.4.130.105 4.794 ms

7 *

8 *

9 [AS4538] 202.112.38.142 3.468 ms

10 [AS4538] 118.229.4.74 4.136 ms

11 *

12 [AS4538] 183.172.52.56 66.227 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

On January 19th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

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