122.204.42.0/23

AS4538 · China Education and Research Network Center

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	122.204.0.0/14
Registry	APNIC
ID	WHR-CERNET

WHOIS Details

inetnum:        122.204.0.0 - 122.207.255.255
netname:        WHR-CERNET
descr:          China Education and Research Network
descr:          Wuhan Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
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:  2020-09-03T09:16:23Z
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:          122.204.0.0/15
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-01-05T03:10:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 122.204.42.0/23

Range	ASN	Company	Num of IPs
122.204.0.0/14	AS4538	China Education and Research Network	262,144

Nearby Ranges

BGP prefixes that overlap with 122.204.0.0/16

Range	ASN	Company	Num of IPs
122.204.0.0/14	AS4538	China Education and Research Network	262,144

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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

IP Address	ASN	Details
122.204.42.11	AS4538 China Education and Research Network Center	`17.30ms` from Guangzhou, 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
20.69.211.151	AS8075 Microsoft Corporation	`0.29ms` from Boydton, US
90.250.183.183	AS5378 Vodafone Limited	`3.73ms` from Edinburgh, GB
207.154.211.199	AS14061 DigitalOcean, LLC	`0.46ms` from Frankfurt am Main, DE
116.111.230.39	AS24086 Viettel Corporation	`12.81ms` from Ho Chi Minh City, VN
112.218.255.151	AS3786 LG DACOM Corporation	`1.62ms` from Incheon, KR
187.110.125.119	AS28624 PROVEDORA CMA INTERNET LTDA	`7.98ms` from Joao Pessoa, BR
109.180.224.103	AS2856 British Telecommunications PLC	`4.79ms` from London, GB
88.10.0.103	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.17ms` from Madrid, ES
46.38.110.7	AS8752 AO "ASVT"	`1.19ms` from Moscow, RU
217.83.19.247	AS3320 Deutsche Telekom AG	`4.85ms` from Nuernberg, DE
112.81.15.23	AS4837 CHINA UNICOM China169 Backbone	`4.68ms` from Shanghai, CN
2.21.194.119	AS16625 Akamai Technologies, Inc.	`0.65ms` from Stockholm, SE
178.82.164.87	AS6730 Sunrise GmbH	`0.70ms` from Zuerich, CH
101.31.78.71	AS4837 CHINA UNICOM China169 Backbone	`11.58ms` from Beijing, CN
66.140.113.247	AS7018 AT&T Enterprises, LLC	`3.36ms` from Dallas, US
47.179.79.151	AS5650 Frontier Communications of America, Inc.	`0.41ms` from Los Angeles, US
68.194.139.215	AS6128 Cablevision Systems Corp.	`5.99ms` from New York City, US
45.92.181.103	AS16347 ADISTA SAS	`0.34ms` from Paris, FR
39.72.40.215	AS4837 CHINA UNICOM China169 Backbone	`5.19ms` from Qingdao, CN
125.147.135.119	AS4766 Korea Telecom	`1.64ms` from Seoul, KR
20.247.190.119	AS8075 Microsoft Corporation	`0.42ms` from Singapore, SG
113.228.11.39	AS4837 CHINA UNICOM China169 Backbone	`3.31ms` from Tieling, CN
137.153.58.23	AS9619 Sony Global Solutions Inc.	`1.36ms` from Tokyo, JP
20.224.101.231	AS8075 Microsoft Corporation	`0.27ms` from Amsterdam, NL
71.135.198.87	AS7018 AT&T Enterprises, LLC	`7.88ms` 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 -f2 -m17 122.204.43.151

traceroute to 122.204.43.151 (122.204.43.151): 17 hops max, 52 byte packets

2 [] 193.149.1.248 27.012 ms

3 [AS23764] 5.154.154.45 33.412 ms

4 *

5 *

6 *

7 [AS4538] 101.4.114.181 307.494 ms

8 *

9 *

10 [AS4538] 101.4.112.66 325.311 ms

11 [AS4538] 101.4.118.214 324.835 ms

12 *

13 [AS4538] 202.112.20.17 328.467 ms

14 [AS4538] 210.42.24.134 325.223 ms

15 *

16 *

17 *

Measurement taken from

IPinfo ProbeNet in Madrid, ES

On March 20th 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.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales