210.31.200.0/21

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Registry APNIC
ID CERNET-CN

WHOIS Details

inetnum:        210.26.0.0 - 210.31.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          Room 224, Tsinghua University
descr:          Beijing, China
country:        CN
admin-c:        JW725-AP
tech-c:         XL364-AP
tech-c:         LZ530-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        confederation
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-10-20T00:56:02Z
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

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

person:         Jianping Wu
address:        China Education and Research Network Center
address:        Room 225, Main Building, Tsinghua University
address:        Beijing 100084
address:        CN
country:        CN
phone:          +86-10-6278-5983
fax-no:         +86-10-6278-5933
e-mail:         jianping@cernet.edu.cn
nic-hdl:        JW725-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:23:32Z
source:         APNIC

person:         Ling Zhang
address:        Network Center
address:        South China University of Technology
address:        Guangzhou, Guangdong 510641, China
address:        CN
country:        CN
phone:          +86-20-87110596
fax-no:         +86-20-87110019
e-mail:         ling@scut.edu.cn
nic-hdl:        LZ530-AP
notify:         dbmon@apnic.net
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:23:32Z
source:         APNIC

person:         Xing Li
address:        China Education and Research Network Center
address:        Room 225, Main Building, Tsinghua University
address:        Beijing 100084
address:        CN
country:        CN
phone:          +86-10-6278-5983
fax-no:         +86-10-6278-5933
e-mail:         xing@cernet.edu.cn
nic-hdl:        XL364-AP
mnt-by:         MAINT-CERNET-AP
last-modified:  2011-12-22T05:23:32Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 210.31.0.0/16

No nearby ranges found.

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

Pingable IPs

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

IP Address ASN Details
210.31.200.251 AS4538 China Education and Research Network Center 9.43ms from Beijing, CN
210.31.202.249 AS4538 China Education and Research Network Center 9.02ms 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
87.239.184.197 AS41095 IPTP LTD 0.51ms from Amsterdam, NL
35.187.118.197 AS396982 Google LLC 0.18ms from Brussels, BE
91.182.93.181 AS5432 Proximus NV 1.98ms from Brussels, BE
41.21.180.5 AS36994 Vodacom 2.60ms from Cape Town, ZA
97.242.72.101 AS6167 Verizon Business 9.24ms from Chicago, US
93.107.252.245 AS15502 Vodafone Ireland Limited 1.38ms from Dublin, IE
112.98.185.117 AS4134 CHINANET-BACKBONE 7.37ms from Harbin, CN
18.67.224.53 AS16509 Amazon.com, Inc. 0.09ms from Kolkata, IN
181.176.69.101 AS262210 VIETTEL PERÚ S.A.C. 1.15ms from Lima, PE
70.127.78.37 AS33363 Charter Communications, Inc 10.06ms from Miami, US
171.35.41.5 AS4837 CHINA UNICOM China169 Backbone 7.17ms from Nanchang, CN
61.179.27.165 AS4837 CHINA UNICOM China169 Backbone 4.13ms from Qingdao, CN
221.116.239.101 AS17506 ARTERIA Networks Corporation 0.74ms from Tokyo, JP
60.171.33.133 AS4134 CHINANET-BACKBONE 8.20ms from Wuhan, CN
77.165.113.197 AS1136 KPN B.V. 2.82ms from Amsterdam, NL
52.55.33.37 AS14618 Amazon.com, Inc. 0.51ms from Ashburn, US
207.44.120.181 AS3737 PenTeleData Inc. 0.52ms from Ashburn, US
217.10.222.133 AS12302 Vodafone Romania S.A. 0.41ms from Bucharest, RO
86.243.243.165 AS3215 Orange S.A. 4.37ms from Frankfurt am Main, DE
31.167.39.5 AS35819 Etihad Etisalat, a joint stock company 4.65ms from Jeddah, SA
47.151.246.133 AS5650 Frontier Communications of America, Inc. 2.48ms from Los Angeles, US
78.4.246.229 AS8968 BT Italia S.p.A. 1.43ms from Milan, IT
180.179.149.229 AS17439 NTT COMMUNICATIONS INDIA NETWORK SERVICES PRIVATE LIMITED 0.81ms from Mumbai, IN
20.88.221.133 AS8075 Microsoft Corporation 0.25ms from San Antonio, US
49.173.144.21 AS17858 LG POWERCOMM 2.67ms from Seoul, KR

Traceroute

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

$
traceroute -a -n -q1 -f8 210.31.202.166
traceroute to 210.31.202.166 (210.31.202.166): 64 hops max, 52 byte packets
8 [AS4538] 101.4.113.234 6.809 ms
9 [AS4538] 222.30.144.66 9.484 ms
10 [AS4538] 222.30.144.14 9.655 ms
11 [AS4538] 210.31.202.166 9.467 ms
Measurement taken from IPinfo ProbeNet in Beijing, CN
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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