183.172.192.0/18

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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        [email protected] 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:         [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        [email protected] was validated on 2025-08-15
abuse-mailbox:  [email protected]
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:         [email protected]
remarks:        [email protected]
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 183.172.192.0/18

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 no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

1,395 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
183.172.254.47	AS4538 China Education and Research Network Center	`4.82ms` from Beijing, CN
183.172.193.154	AS4538 China Education and Research Network Center	`6.81ms` from Beijing, CN
183.172.209.155	AS4538 China Education and Research Network Center	`4.66ms` from Beijing, CN
183.172.231.113	AS4538 China Education and Research Network Center	`6.30ms` from Beijing, CN
183.172.255.120	AS4538 China Education and Research Network Center	`5.99ms` from Beijing, CN
183.172.192.21	AS4538 China Education and Research Network Center	`2.06ms` from Beijing, CN
183.172.249.177	AS4538 China Education and Research Network Center	`6.77ms` from Tianjin, CN
183.172.215.120	AS4538 China Education and Research Network Center	`5.61ms` from Tianjin, CN
183.172.225.64	AS4538 China Education and Research Network Center	`5.94ms` from Beijing, CN
183.172.244.167	AS4538 China Education and Research Network Center	`5.99ms` from Tianjin, CN
183.172.198.240	AS4538 China Education and Research Network Center	`5.84ms` from Tianjin, CN
183.172.229.216	AS4538 China Education and Research Network Center	`6.36ms` from Beijing, CN
183.172.228.29	AS4538 China Education and Research Network Center	`5.07ms` from Beijing, CN
183.172.232.1	AS4538 China Education and Research Network Center	`2.34ms` from Beijing, CN
183.172.251.174	AS4538 China Education and Research Network Center	`5.67ms` from Beijing, CN
183.172.223.88	AS4538 China Education and Research Network Center	`5.00ms` from Beijing, CN
183.172.201.126	AS4538 China Education and Research Network Center	`6.74ms` from Beijing, CN
183.172.204.158	AS4538 China Education and Research Network Center	`5.55ms` from Beijing, CN
183.172.212.129	AS4538 China Education and Research Network Center	`5.48ms` from Beijing, CN
183.172.211.87	AS4538 China Education and Research Network Center	`6.56ms` from Beijing, CN
183.172.243.41	AS4538 China Education and Research Network Center	`6.37ms` from Tianjin, CN
183.172.208.36	AS4538 China Education and Research Network Center	`2.77ms` from Tianjin, CN
183.172.252.106	AS4538 China Education and Research Network Center	`4.90ms` from Beijing, CN
183.172.253.76	AS4538 China Education and Research Network Center	`6.66ms` from Tianjin, CN
183.172.250.66	AS4538 China Education and Research Network Center	`5.74ms` from Tianjin, 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
31.201.177.146	AS50266 Odido Netherlands B.V.	`8.17ms` from Amsterdam, NL
204.242.0.114	AS6079 RCN	`1.46ms` from Ashburn, US
213.61.223.98	AS8220 COLT Technology Services Group Limited	`1.66ms` from Berlin, DE
118.24.185.178	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.79ms` from Chengdu, CN
71.227.89.98	AS7922 Comcast Cable Communications, LLC	`11.76ms` from Chicago, US
96.11.32.66	AS10796 Charter Communications Inc	`1.13ms` from Cleveland, US
87.154.6.18	AS3320 Deutsche Telekom AG	`4.99ms` from Duesseldorf, DE
79.236.255.50	AS3320 Deutsche Telekom AG	`2.25ms` from Duesseldorf, DE
79.213.205.178	AS3320 Deutsche Telekom AG	`4.12ms` from Frankfurt am Main, DE
14.182.208.66	AS45899 VNPT Corp	`2.53ms` from Hanoi, VN
202.188.248.2	AS4788 TM TECHNOLOGY SERVICES SDN. BHD.	`3.84ms` from Kuala Lumpur, MY
176.67.160.2	AS13213 UK-2 Limited	`0.47ms` from London, GB
2.136.213.34	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.94ms` from Madrid, ES
16.50.154.210	AS16509 Amazon.com, Inc.	`0.61ms` from Melbourne, AU
89.179.73.34	AS8402 PJSC Vimpelcom	`7.05ms` from Moscow, RU
182.71.177.210	AS9498 BHARTI Airtel Ltd.	`2.21ms` from Mumbai, IN
24.21.87.178	AS7922 Comcast Cable Communications, LLC	`5.29ms` from Portland, US
71.236.207.66	AS7922 Comcast Cable Communications, LLC	`3.24ms` from Portland, US
59.1.236.194	AS4766 Korea Telecom	`4.41ms` from Seoul, KR
217.98.13.162	AS5617 Orange Polska Spolka Akcyjna	`9.06ms` from Warsaw, PL
144.202.252.2	AS17378 TierPoint, LLC	`2.20ms` from Ashburn, US
4.152.84.50	AS8075 Microsoft Corporation	`0.22ms` from Boydton, US
80.201.163.146	AS5432 Proximus NV	`3.22ms` from Brussels, BE
200.69.143.98	AS11664 Techtel LMDS Comunicaciones Interactivas S.A.	`1.32ms` from Buenos Aires, AR
107.137.200.146	AS7018 AT&T Enterprises, LLC	`18.16ms` from Chicago, US

Traceroute

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

traceroute -a -n -q1 183.172.199.170

traceroute to 183.172.199.170 (183.172.199.170): 64 hops max, 52 byte packets

1 [AS50293] 193.39.195.45 1.832 ms

2 *

3 [AS6939] 184.104.189.30 22.526 ms

4 *

5 *

6 [] 123.255.91.118 261.855 ms

7 [AS4538] 101.4.114.181 259.79 ms

8 *

9 *

10 [AS4538] 101.4.115.145 265.796 ms

11 *

12 [AS4538] 202.112.38.142 267.633 ms

13 [AS4538] 118.229.4.74 266.508 ms

14 *

15 *

16 *

17 *

18 [AS4538] 183.172.199.170 352.393 ms

Measurement taken from

IPinfo ProbeNet in Lisbon, PT

On January 18th 2026

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