202.113.112.0/20

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 202.113.112.0/20

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

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Pingable IPs

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

IP Address	ASN	Details
202.113.112.253	AS4538 China Education and Research Network Center	`4.45ms` from Beijing, CN
202.113.122.1	AS4538 China Education and Research Network Center	`5.71ms` from Beijing, CN
202.113.114.60	AS4538 China Education and Research Network Center	`4.92ms` from Beijing, CN
202.113.113.30	AS4538 China Education and Research Network Center	`6.87ms` 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
89.110.80.228	AS216071 SERVERS TECH FZCO	`0.56ms` from Amsterdam, NL
223.27.208.4	AS38794 UIH	`0.73ms` from Bangkok, TH
91.179.173.4	AS5432 Proximus NV	`1.78ms` from Brussels, BE
34.103.141.244	AS396982 Google LLC	`1.44ms` from Frankfurt am Main, DE
191.97.65.4	AS265775 AUSTRONET	`4.92ms` from Guayaquil, EC
14.183.225.180	AS45899 VNPT Corp	`3.63ms` from Ho Chi Minh City, VN
82.118.105.52	AS8607 Digital Space Group Limited	`0.71ms` from London, GB
184.25.100.148	AS20940 Akamai International B.V.	`0.34ms` from Marseille, FR
67.172.102.116	AS7922 Comcast Cable Communications, LLC	`6.75ms` from Murfreesboro, US
23.203.242.164	AS16625 Akamai Technologies, Inc.	`0.43ms` from New York City, US
68.84.219.116	AS7922 Comcast Cable Communications, LLC	`8.89ms` from Secaucus, US
101.202.18.196	AS17878 DREAMMARK1	`1.02ms` from Seoul, KR
49.60.102.36	AS4766 Korea Telecom	`3.77ms` from Seoul, KR
116.126.28.132	AS9318 SK Broadband Co Ltd	`2.94ms` from Seoul, KR
85.238.199.20	AS29518 Bredband2 AB	`12.60ms` from Stockholm, SE
124.167.49.52	AS4837 CHINA UNICOM China169 Backbone	`5.43ms` from Taiyuan, CN
107.189.13.148	AS53667 FranTech Solutions	`1.66ms` from Zuerich, CH
18.154.232.68	AS16509 Amazon.com, Inc.	`0.69ms` from Ashburn, US
120.61.227.164	AS9829 National Internet Backbone	`11.51ms` from Bengaluru, IN
91.51.128.132	AS3320 Deutsche Telekom AG	`4.55ms` from Duesseldorf, DE
35.246.185.116	AS396982 Google LLC	`0.11ms` from Frankfurt am Main, DE
86.115.135.116	AS1759 Telia Finland Oyj	`16.21ms` from Helsinki, FI
20.219.20.68	AS8075 Microsoft Corporation	`0.16ms` from Lohogaon, IN
86.51.191.84	AS35819 Etihad Etisalat, a joint stock company	`3.48ms` from Manama, BH
100.1.213.228	AS701 Verizon Business	`2.20ms` from New York City, US

Traceroute

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

traceroute -a -n -q1 -f5 -m17 202.113.124.110

traceroute to 202.113.124.110 (202.113.124.110): 17 hops max, 52 byte packets

5 [AS24940] 213.239.228.25 0.496 ms

6 [AS24940] 213.239.228.1 0.285 ms

7 [AS24940] 213.239.224.149 20.052 ms

8 [AS24940] 213.239.245.85 20.345 ms

9 *

10 [AS58453] 223.120.10.41 26.687 ms

11 *

12 *

13 *

14 [AS4538] 101.4.114.181 245.43 ms

15 *

16 *

17 *

Measurement taken from

IPinfo ProbeNet in Helsinki, FI

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.

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