202.199.128.0/20

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 202.192.0.0/13
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:        hostmaster@apnic.net 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:         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

Overlapping Ranges

BGP prefixes that contain 202.199.128.0/20

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 are 3 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
202.199.128.126 tongcheng.net 1

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

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

IP Address ASN Details
202.199.129.54 AS4538 China Education and Research Network Center 20.00ms from Beijing, CN
202.199.128.107 AS4538 China Education and Research Network Center 19.73ms from Beijing, CN
202.199.137.66 AS4538 China Education and Research Network Center 20.00ms 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
75.28.140.36 AS7018 AT&T Enterprises, LLC 9.47ms from Atlanta, US
152.201.244.52 AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 2.94ms from Bogota, CO
121.45.155.148 AS7545 TPG Telecom Limited 1.80ms from Brisbane, AU
76.202.60.36 AS7018 AT&T Enterprises, LLC 8.04ms from Chicago, US
192.5.113.4 AS32666 Case Western Reserve University 5.32ms from Columbus, US
69.146.62.52 AS33588 Charter Communications LLC 11.55ms from Denver, US
134.138.160.212 AS8075 Microsoft Corporation 0.39ms from Des Moines, US
91.178.117.68 AS5432 Proximus NV 4.74ms from Gravelines, FR
84.167.44.164 AS3320 Deutsche Telekom AG 3.16ms from Hamburg, DE
188.28.40.228 AS206067 Hutchison 3G UK Limited 8.74ms from London, GB
176.20.161.132 AS48101 Trooli Ltd. 0.89ms from London, GB
207.223.54.20 AS22775 Moore Capital Management 3.37ms from Miami, US
34.47.220.228 AS396982 Google LLC 0.08ms from Mumbai, IN
58.190.162.244 AS17511 OPTAGE Inc. 2.01ms from Osaka, JP
201.123.41.244 AS8151 UNINET 9.95ms from Santiago de Queretaro, MX
125.151.211.132 AS4766 Korea Telecom 1.69ms from Seoul, KR
8.219.242.20 AS45102 Alibaba (US) Technology Co., Ltd. 0.66ms from Singapore, SG
194.181.0.164 AS8308 NAUKOWA I AKADEMICKA SIEC KOMPUTEROWA - PANSTWOWY INSTYTUT BADAWCZY 0.51ms from Warsaw, PL
188.212.46.68 AS8926 Moldtelecom SA 1.28ms from Chisinau, MD
209.95.226.164 AS10676 IBM 5.12ms from Cincinnati, US
149.224.182.244 AS15943 wilhelm.tel GmbH 0.47ms from Hamburg, DE
168.5.47.84 AS8 Rice University 3.87ms from Houston, US
2.96.63.68 AS13285 TalkTalk Communications Limited 8.27ms from London, GB
157.125.28.4 AS31655 Gamma Telecom Holdings Ltd 2.66ms from London, GB
24.176.174.20 AS20115 Charter Communications LLC 9.62ms 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 -m14 202.199.138.48
traceroute to 202.199.138.48 (202.199.138.48): 14 hops max, 52 byte packets
2 [AS20473] 104.238.168.97 175.724 ms
3 *
4 *
5 *
6 *
7 *
8 *
9 *
10 *
11 [AS4538] 101.4.114.169 303.18 ms
12 *
13 *
14 *
Measurement taken from IPinfo ProbeNet in London, GB
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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