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 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

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:         hostmaster@cernic.net
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2018-09-13T12:56:34Z
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

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

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
41.74.31.245	AS37037 Orange Madagascar	`1.20ms` from Antananarivo, MG
69.248.128.101	AS7922 Comcast Cable Communications, LLC	`5.67ms` from Ashburn, US
189.61.125.181	AS28573 Claro NXT Telecomunicacoes Ltda	`7.65ms` from Brasilia, BR
190.92.169.85	AS14670 WHG Hosting Services Ltd	`0.24ms` from Buffalo, US
173.175.181.197	AS11427 Charter Communications Inc	`18.54ms` from Dallas, US
45.167.56.133	AS267994 MAIS INTERNET COMERCIO SERVICOS E TELEC LTDA	`1.84ms` from Fortaleza, BR
63.176.57.165	AS16509 Amazon.com, Inc.	`0.17ms` from Frankfurt am Main, DE
120.253.28.5	AS9808 China Mobile Communications Group Co., Ltd.	`10.94ms` from Hohhot, CN
94.78.209.85	AS12389 PJSC Rostelecom	`1.00ms` from Krasnoyarsk, RU
103.249.203.21	AS151652 ZSG Internet Communication Services	`0.09ms` from Manila, PH
172.104.26.149	AS63949 Akamai Connected Cloud	`0.14ms` from Morris Plains, US
98.13.213.37	AS12271 Charter Communications Inc	`3.89ms` from New York City, US
73.148.146.229	AS7922 Comcast Cable Communications, LLC	`4.51ms` from Orlando, US
213.151.81.21	AS29208 Quantcom, a.s.	`0.54ms` from Prague, CZ
54.209.105.133	AS14618 Amazon.com, Inc.	`0.47ms` from Reston, US
3.170.3.165	AS16509 Amazon.com, Inc.	`0.49ms` from Reston, US
96.57.177.101	AS6128 Cablevision Systems Corp.	`7.70ms` from Secaucus, US
151.177.250.213	AS1257 Tele2 Sverige AB	`9.54ms` from Stockholm, SE
185.185.135.21	AS206446 CLOUD LEASE Ltd	`0.14ms` from Tel Aviv, IL
113.230.97.181	AS4837 CHINA UNICOM China169 Backbone	`2.05ms` from Tieling, CN
5.188.65.213	AS200590 NLS Kazakhstan LLC	`0.51ms` from Almaty, KZ
40.68.150.213	AS8075 Microsoft Corporation	`0.25ms` from Amsterdam, NL
43.166.134.133	AS132203 Tencent Building, Kejizhongyi Avenue	`0.29ms` from Ashburn, US
20.185.20.101	AS8075 Microsoft Corporation	`0.38ms` from Ashburn, US
212.251.56.37	AS1241 Forthnet	`1.25ms` from Athens, GR

Traceroute

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

traceroute -a -n -q1 -f3 -m16 202.113.83.196

traceroute to 202.113.83.196 (202.113.83.196): 16 hops max, 52 byte packets

3 [AS749] 11.88.174.117 1.157 ms

4 *

5 *

6 *

7 [AS4538] 101.4.130.25 10.167 ms

8 [AS4538] 219.224.103.66 9.02 ms

9 [AS4538] 101.4.112.70 11.878 ms

10 *

11 *

12 *

13 [AS4538] 59.67.181.22 12.193 ms

14 *

15 *

16 *

Measurement taken from

IPinfo ProbeNet in Jining, CN

On April 13th 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.

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