202.199.112.0/21

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 202.192.0.0/13
Registry APNIC
ID CERNET-CN

WHOIS Details

inetnum:        202.192.0.0 - 202.199.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          SY Region
descr:          China Education and Research Network Center
descr:          Tsinghua University
descr:          Beijing, 100084
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        service provider
remarks:        [email protected] 960130
mnt-by:         APNIC-HM
mnt-irt:        IRT-CERNET-AP
last-modified:  2021-10-30T08:29:34Z
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
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

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 202.199.112.0/21

Range ASN Company Num of IPs
202.192.0.0/13 AS4538 China Education and Research Network 524,288

Nearby Ranges

BGP prefixes that overlap with 202.199.0.0/16

Range ASN Company Num of IPs
202.192.0.0/13 AS4538 China Education and Research Network 524,288
202.199.240.0/21 AS4538 Anshan Institute of Iron and Steel Technology 2,048
202.199.248.0/21 AS4538 Anshan Normal College 2,048

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP

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

Pingable IPs

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

IP Address ASN Details
202.199.112.80 AS4538 China Education and Research Network Center 15.50ms from Beijing, CN
202.199.115.45 AS4538 China Education and Research Network Center 15.70ms from Beijing, CN
202.199.113.158 AS4538 China Education and Research Network Center 15.05ms from Beijing, CN
202.199.114.240 AS4538 China Education and Research Network Center 16.55ms 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
49.51.86.53 AS132203 Tencent Building, Kejizhongyi Avenue 0.32ms from Ashburn, US
181.87.1.5 AS7303 Telecom Argentina S.A. 16.63ms from Buenos Aires, AR
45.220.255.69 AS32653 eNetworks cc 1.57ms from Cape Town, ZA
74.134.86.165 AS10796 Charter Communications Inc 8.02ms from Columbus, US
62.246.151.85 AS12312 ecotel communication ag 3.97ms from Frankfurt am Main, DE
3.123.255.133 AS16509 Amazon.com, Inc. 0.15ms from Frankfurt am Main, DE
117.2.244.181 AS7552 Viettel Group 8.79ms from Ho Chi Minh City, VN
194.30.125.5 AS3262 SAREnet, S.A. 2.68ms from Madrid, ES
180.181.144.229 AS7477 SkyMesh Pty Ltd 3.83ms from Melbourne, AU
63.236.222.53 AS209 CenturyLink Communications, LLC 3.45ms from Miami, US
82.186.221.5 AS3269 Telecom Italia S.p.A. 7.16ms from Milan, IT
178.126.62.133 AS6697 Republican Unitary Telecommunication Enterprise Beltelecom 5.11ms from Minsk, BY
80.14.12.133 AS3215 Orange S.A. 1.56ms from Paris, FR
27.193.213.181 AS4837 CHINA UNICOM China169 Backbone 1.87ms from Qingdao, CN
45.5.99.245 AS266091 Giganet Internet 12.11ms from Sao Paulo, BR
221.165.194.149 AS4766 Korea Telecom 1.27ms from Seoul, KR
27.113.29.165 AS9781 GREEN CABLE TELEVISION STATION 6.43ms from Seoul, KR
77.29.124.69 AS6821 Makedonski Telekom AD-Skopje 6.08ms from Skopje, MK
20.78.124.117 AS8075 Microsoft Corporation 0.21ms from Tokyo, JP
216.191.46.181 AS6461 Zayo Bandwidth 2.46ms from Toronto, CA
3.208.18.245 AS14618 Amazon.com, Inc. 0.42ms from Ashburn, US
35.166.220.133 AS16509 Amazon.com, Inc. 0.14ms from Boardman, US
23.112.164.5 AS7018 AT&T Enterprises, LLC 5.52ms from Chicago, US
188.237.75.149 AS8926 Moldtelecom SA 1.93ms from Chisinau, MD
137.97.126.149 AS55836 Reliance Jio Infocomm Limited 8.79ms from Delhi, IN

Traceroute

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

$
traceroute -a -n -q1 -f2 -m19 202.199.112.89
traceroute to 202.199.112.89 (202.199.112.89): 19 hops max, 52 byte packets
3 [AS56655] 185.125.170.251 100.557 ms
4 *
5 *
6 *
7 [AS6939] 184.105.80.14 74.321 ms
8 *
9 *
10 [] 123.255.91.118 298.451 ms
11 [AS4538] 101.4.114.181 312.663 ms
12 *
13 [AS4538] 101.4.117.81 307.417 ms
14 [AS4538] 101.4.112.82 327.472 ms
15 *
16 [AS4538] 101.4.113.138 315.404 ms
17 *
18 *
19 *
Measurement taken from IPinfo ProbeNet in Sandefjord, NO
On

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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