101.7.0.0/22

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	101.4.0.0/14
Registry	APNIC
ID	BJR-CERNET

WHOIS Details

inetnum:        101.4.0.0 - 101.7.255.255
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:        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:  2020-09-03T09:16:24Z
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:          101.4.0.0/14
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2010-12-13T06:08:01Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 101.7.0.0/22

Range	ASN	Company	Num of IPs
101.4.0.0/14	AS4538	China Education and Research Network	262,144

Nearby Ranges

BGP prefixes that overlap with 101.7.0.0/16

Range	ASN	Company	Num of IPs
101.4.0.0/14	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

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

IP Address	ASN	Details
101.7.3.254	AS4538 China Education and Research Network Center	`12.37ms` from Tianjin, CN
101.7.0.3	AS4538 China Education and Research Network Center	`11.85ms` 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
112.194.216.118	AS4837 CHINA UNICOM China169 Backbone	`4.21ms` from Chengdu, CN
113.171.60.166	AS45899 VNPT Corp	`0.57ms` from Da Nang, VN
169.47.226.38	AS36351 IBM Cloud	`1.22ms` from Dallas, US
108.204.191.22	AS7018 AT&T Enterprises, LLC	`2.05ms` from Dallas, US
73.252.100.150	AS7922 Comcast Cable Communications, LLC	`14.71ms` from Dallas, US
220.70.88.22	AS4766 Korea Telecom	`1.35ms` from Incheon, KR
97.189.122.102	AS6167 Verizon Business	`8.17ms` from Los Angeles, US
107.141.97.70	AS7018 AT&T Enterprises, LLC	`4.47ms` from Los Angeles, US
154.56.219.246	AS200984 NUOVAFIBER S.R.L.	`5.55ms` from Milan, IT
183.166.187.214	AS4134 CHINANET-BACKBONE	`10.68ms` from Nanchang, CN
38.88.219.150	AS174 Cogent Communications, LLC	`0.53ms` from New York City, US
201.34.74.6	AS8167 V tal	`1.36ms` from Novo Hamburgo, BR
91.166.242.6	AS12322 Free SAS	`19.12ms` from Paris, FR
76.115.166.38	AS7922 Comcast Cable Communications, LLC	`2.61ms` from Portland, US
121.138.197.54	AS4766 Korea Telecom	`1.36ms` from Seoul, KR
41.98.35.246	AS36947 Telecom Algeria	`9.09ms` from Valencia, ES
194.62.134.150	AS43350 NForce Entertainment B.V.	`0.57ms` from Amsterdam, NL
96.70.223.246	AS7922 Comcast Cable Communications, LLC	`4.62ms` from Boston, US
186.109.242.38	AS7303 Telecom Argentina S.A.	`1.11ms` from Cordoba, AR
73.95.58.54	AS7922 Comcast Cable Communications, LLC	`5.90ms` from Denver, US
80.140.176.214	AS3320 Deutsche Telekom AG	`9.29ms` from Frankfurt am Main, DE
203.80.116.166	AS9269 Hong Kong Broadband Network Ltd.	`0.47ms` from Hong Kong, HK
4.213.37.86	AS8075 Microsoft Corporation	`0.14ms` from Lohogaon, IN
151.225.243.166	AS5607 Sky UK Limited	`1.47ms` from London, GB
67.125.164.134	AS7018 AT&T Enterprises, LLC	`3.59ms` from Los Angeles, 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 -m16 101.7.1.161

traceroute to 101.7.1.161 (101.7.1.161): 16 hops max, 52 byte packets

2 [AS212477] 217.119.131.254 0.525 ms

3 [AS212477] 217.119.131.16 0.887 ms

4 [AS212477] 45.130.119.48 0.392 ms

5 [] 198.32.160.222 33.031 ms

6 [AS58453] 223.120.6.77 36.943 ms

7 [AS58453] 223.120.6.49 83.135 ms

8 [AS58453] 223.120.3.86 241.344 ms

9 [AS58453] 223.119.81.94 240.07 ms

10 [AS4538] 101.4.114.221 241.323 ms

11 [AS4538] 101.4.114.169 241.137 ms

12 *

13 [AS4538] 101.4.117.206 262.287 ms

14 *

15 *

16 *

Measurement taken from

IPinfo ProbeNet in New York City, US

On February 16th 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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