183.172.128.0/18

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 Center,
address:        FIT-3-220, 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:        abuse@cernet.edu.cn was validated on 2026-03-05
mnt-by:         MAINT-CERNET-AP
last-modified:  2026-03-05T06:39:56Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Center,
address:        FIT-3-220, 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 2026-03-05
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-05T06:40:20Z
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 183.172.128.0/18

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

1,758 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
183.172.129.0	AS4538 China Education and Research Network Center	`6.09ms` from Beijing, CN
183.172.130.170	AS4538 China Education and Research Network Center	`5.63ms` from Beijing, CN
183.172.164.178	AS4538 China Education and Research Network Center	`5.06ms` from Beijing, CN
183.172.178.183	AS4538 China Education and Research Network Center	`6.51ms` from Beijing, CN
183.172.169.162	AS4538 China Education and Research Network Center	`6.49ms` from Beijing, CN
183.172.150.41	AS4538 China Education and Research Network Center	`5.96ms` from Beijing, CN
183.172.191.188	AS4538 China Education and Research Network Center	`5.66ms` from Tianjin, CN
183.172.133.45	AS4538 China Education and Research Network Center	`6.15ms` from Beijing, CN
183.172.156.240	AS4538 China Education and Research Network Center	`5.01ms` from Beijing, CN
183.172.138.95	AS4538 China Education and Research Network Center	`5.22ms` from Beijing, CN
183.172.176.50	AS4538 China Education and Research Network Center	`2.15ms` from Beijing, CN
183.172.139.177	AS4538 China Education and Research Network Center	`5.50ms` from Tianjin, CN
183.172.137.110	AS4538 China Education and Research Network Center	`5.47ms` from Beijing, CN
183.172.145.86	AS4538 China Education and Research Network Center	`4.48ms` from Beijing, CN
183.172.142.223	AS4538 China Education and Research Network Center	`5.16ms` from Beijing, CN
183.172.184.22	AS4538 China Education and Research Network Center	`2.33ms` from Beijing, CN
183.172.173.165	AS4538 China Education and Research Network Center	`6.04ms` from Tianjin, CN
183.172.131.22	AS4538 China Education and Research Network Center	`4.73ms` from Beijing, CN
183.172.175.176	AS4538 China Education and Research Network Center	`6.36ms` from Beijing, CN
183.172.136.32	AS4538 China Education and Research Network Center	`2.22ms` from Beijing, CN
183.172.161.209	AS4538 China Education and Research Network Center	`6.20ms` from Beijing, CN
183.172.155.88	AS4538 China Education and Research Network Center	`5.75ms` from Beijing, CN
183.172.135.76	AS4538 China Education and Research Network Center	`6.04ms` from Beijing, CN
183.172.153.190	AS4538 China Education and Research Network Center	`4.97ms` from Beijing, CN
183.172.182.53	AS4538 China Education and Research Network Center	`6.37ms` 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
20.160.138.98	AS8075 Microsoft Corporation	`0.22ms` from Amsterdam, NL
96.85.47.178	AS7922 Comcast Cable Communications, LLC	`10.14ms` from Ashburn, US
102.44.101.34	AS8452 TE-AS	`8.05ms` from Cairo, EG
198.101.225.2	AS33070 Rackspace Hosting	`1.17ms` from Dallas, US
34.243.175.114	AS16509 Amazon.com, Inc.	`0.14ms` from Dublin, IE
93.240.139.194	AS3320 Deutsche Telekom AG	`1.22ms` from Frankfurt am Main, DE
61.101.180.114	AS9318 SK Broadband Co Ltd	`2.07ms` from Incheon, KR
109.159.34.34	AS2856 British Telecommunications PLC	`10.45ms` from London, GB
158.176.121.66	AS36351 IBM Cloud	`0.62ms` from London, GB
62.141.107.146	AS3216 PJSC Vimpelcom	`0.66ms` from Moscow, RU
70.89.225.82	AS7922 Comcast Cable Communications, LLC	`11.93ms` from New York City, US
54.163.247.242	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
212.251.180.98	AS2119 Telenor Norge AS	`7.44ms` from Sandefjord, NO
201.147.200.98	AS8151 UNINET	`0.87ms` from Santiago de Queretaro, MX
106.139.121.130	AS2516 KDDI CORPORATION	`0.83ms` from Tokyo, JP
52.124.93.2	AS11260 EastLink	`2.41ms` from Toronto, CA
119.97.155.130	AS4134 CHINANET BACKBONE	`1.21ms` from Wuhan, CN
76.100.52.178	AS7922 Comcast Cable Communications, LLC	`6.46ms` from Ashburn, US
122.58.133.18	AS4771 Spark New Zealand Trading Ltd.	`14.11ms` from Auckland, NZ
209.89.174.114	AS852 TELUS Communications Inc.	`0.86ms` from Calgary, CA
64.92.56.34	AS6300 Fidium	`8.94ms` from Dallas, US
50.65.253.98	AS6327 Shaw Communications	`9.77ms` from Edmonton, CA
32.44.43.2	AS7018 AT&T Enterprises, LLC	`1.84ms` from Houston, US
175.237.2.162	AS4766 Korea Telecom	`1.77ms` from Incheon, KR
211.212.153.130	AS9318 SK Broadband Co Ltd	`1.49ms` from Incheon, KR

Traceroute

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

traceroute -a -n -q1 -f3 183.172.136.103

traceroute to 183.172.136.103 (183.172.136.103): 64 hops max, 52 byte packets

3 [AS9002] 87.245.232.244 30.583 ms

4 *

5 [AS58453] 223.120.10.85 32.009 ms

6 *

7 *

8 *

9 [AS4538] 101.4.114.181 187.657 ms

10 *

11 [AS4538] 101.4.117.81 189.278 ms

12 [AS4538] 101.4.115.249 188.847 ms

13 *

14 *

15 [AS4538] 118.229.4.70 189.177 ms

16 *

17 *

18 *

19 [AS4538] 183.172.136.103 348.38 ms

Measurement taken from

IPinfo ProbeNet in Tallinn, EE

On April 24th 2026

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