202.113.80.0/21

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	202.112.0.0/15
Registry	APNIC
ID	BJR-CERNET

WHOIS Details

inetnum:        202.112.0.0 - 202.113.255.255
netname:        BJR-CERNET
descr:          China Education and Research Network
descr:          Beijing Regional Network
country:        CN
org:            ORG-CEAR1-AP
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-05-28T02:35:51Z
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

organisation:   ORG-CEAR1-AP
org-name:       China Education and Research Network (CERNET)
country:        CN
address:        FIT 3-220,
address:        Tsinghua University
phone:          +86-10-62785983
fax-no:         +86-10-62785933
e-mail:         [email protected]
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2018-09-13T12:56:34Z
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

Overlapping Ranges

BGP prefixes that contain 202.113.80.0/21

Range	ASN	Company	Num of IPs
202.112.0.0/15	AS4538	China Education and Research Network	131,072

Nearby Ranges

BGP prefixes that overlap with 202.113.0.0/16

Range	ASN	Company	Num of IPs
202.112.0.0/15	AS4538	China Education and Research Network	131,072

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

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

IP Address	ASN	Details
202.113.80.59	AS4538 China Education and Research Network Center	`5.45ms` 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
178.62.179.197	AS14061 DigitalOcean, LLC	`0.20ms` from Amsterdam, NL
198.253.173.37	AS668 United States Department of Defense (DoD)	`0.61ms` from Atlanta, US
156.80.20.5	AS393649 Booz Allen Hamilton Inc.	`1.00ms` from Dallas, US
94.7.182.53	AS5607 Sky UK Limited	`6.27ms` from Erith, GB
188.42.96.5	AS58909 IBEE Software Solutions Pvt. Ltd.	`1.62ms` from Hyderabad, IN
94.153.149.245	AS15895 "Kyivstar" PJSC	`8.48ms` from Kyiv, UA
51.9.61.245	AS6871 Plusnet	`4.75ms` from London, GB
12.116.214.149	AS7018 AT&T Enterprises, LLC	`1.68ms` from Los Angeles, US
90.246.87.133	AS5378 Vodafone Limited	`4.46ms` from Manchester, GB
205.170.169.37	AS209 CenturyLink Communications, LLC	`0.73ms` from Miami, US
79.61.101.85	AS3269 Telecom Italia S.p.A.	`17.72ms` from Milan, IT
71.193.128.149	AS7922 Comcast Cable Communications, LLC	`7.62ms` from Portland, US
98.237.173.213	AS7922 Comcast Cable Communications, LLC	`14.26ms` from Seattle, US
49.113.17.197	AS4134 CHINANET-BACKBONE	`2.17ms` from UEruemqi, CN
218.84.217.37	AS4134 CHINANET-BACKBONE	`12.53ms` from UEruemqi, CN
88.116.64.133	AS8447 A1 Telekom Austria AG	`3.56ms` from Vienna, AT
98.219.16.53	AS7922 Comcast Cable Communications, LLC	`4.89ms` from Atlanta, US
65.165.4.197	AS174 Cogent Communications, LLC	`0.89ms` from Dallas, US
47.44.199.21	AS20115 Charter Communications LLC	`2.59ms` from Dallas, US
162.207.73.69	AS7018 AT&T Enterprises, LLC	`6.73ms` from Dallas, US
119.41.148.133	AS4134 CHINANET-BACKBONE	`1.42ms` from Haikou, CN
115.75.190.21	AS7552 Viettel Group	`1.42ms` from Ho Chi Minh City, VN
49.130.197.5	AS17924 SmarTone Mobile Communications Ltd	`17.87ms` from Hong Kong, HK
23.91.54.133	AS36315 Servpac Inc.	`0.54ms` from Honolulu, US
197.210.154.165	AS29465 MTN NIGERIA Communication limited	`1.36ms` from Lagos, NG

Traceroute

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

traceroute -a -n -q1 -f4 -m15 202.113.82.134

traceroute to 202.113.82.134 (202.113.82.134): 15 hops max, 52 byte packets

4 [AS4538] 101.4.114.181 288.352 ms

5 *

6 *

7 [AS4538] 101.4.115.249 281.039 ms

8 [AS4538] 101.4.112.70 283.173 ms

9 *

10 *

11 *

12 [AS4538] 59.67.181.22 278.641 ms

13 *

14 *

15 *

Measurement taken from

IPinfo ProbeNet in Rome, IT

On December 14th 2025

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.

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