202.199.24.0/21

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 202.199.24.0/21

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

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

IP Address ASN Details
202.199.31.254 AS4538 China Education and Research Network Center 7.18ms from Dalian, CN
202.199.26.202 AS4538 China Education and Research Network Center 6.93ms from Dalian, CN
202.199.29.113 AS4538 China Education and Research Network Center 6.25ms from Dalian, CN
202.199.24.112 AS4538 China Education and Research Network Center 14.61ms 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
52.81.124.69 AS55960 Beijing Guanghuan Xinwang Digital 3.93ms from Beijing, CN
35.222.132.117 AS396982 Google LLC 0.11ms from Council Bluffs, US
34.170.113.69 AS396982 Google LLC 0.12ms from Council Bluffs, US
93.185.157.21 AS215590 DpkgSoft International Limited 0.21ms from Frankfurt am Main, DE
217.111.98.5 AS8220 COLT Technology Services Group Limited 8.84ms from Frankfurt am Main, DE
5.133.12.21 AS197155 Artnet Sp. z o.o. 0.19ms from Gdansk, PL
218.60.118.5 AS4837 CHINA UNICOM China169 Backbone 7.67ms from Liaoyang, CN
178.124.134.245 AS6697 Republican Unitary Telecommunication Enterprise Beltelecom 0.76ms from Minsk, BY
176.193.144.133 AS12714 PJSC MegaFon 1.70ms from Moscow, RU
74.112.240.5 AS33069 BCI 7.74ms from New Orleans, US
47.23.113.53 AS6128 Cablevision Systems Corp. 2.79ms from New York City, US
89.24.157.181 AS13036 T-Mobile Czech Republic a.s. 7.58ms from Prague, CZ
119.166.186.165 AS4837 CHINA UNICOM China169 Backbone 1.13ms from Qingdao, CN
23.49.227.117 AS16625 Akamai Technologies, Inc. 0.86ms from Seoul, KR
114.30.143.149 AS38121 LG HelloVision Corp. 7.54ms from Seoul, KR
221.147.66.37 AS4766 Korea Telecom 0.97ms from Seoul, KR
54.150.60.37 AS16509 Amazon.com, Inc. 0.26ms from Tokyo, JP
126.139.104.117 AS17676 SoftBank Corp. 1.14ms from Tokyo, JP
126.40.253.37 AS17676 SoftBank Corp. 15.98ms from Tokyo, JP
118.240.255.53 AS2527 Sony Network Communications Inc. 1.76ms from Tokyo, JP
62.74.228.37 AS12361 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA 1.24ms from Athens, GR
82.76.246.37 AS8708 DIGI ROMANIA S.A. 0.65ms from Bucharest, RO
190.97.29.5 AS27833 BVNET S.A. 7.59ms from Buenos Aires, AR
3.150.208.165 AS16509 Amazon.com, Inc. 0.18ms from Columbus, US
148.9.69.5 AS3745 NTT DATA Services Holdings Corporation 11.68ms from Columbus, US

Traceroute

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

$
traceroute -a -n -q1 -f9 202.199.26.248
traceroute to 202.199.26.248 (202.199.26.248): 64 hops max, 52 byte packets
10 *
11 [AS4538] 219.224.103.86 6.025 ms
12 [AS4538] 101.4.112.82 16.37 ms
13 *
14 [AS4538] 101.4.113.138 16.373 ms
15 [AS4538] 202.112.31.30 16.326 ms
16 *
17 *
18 *
19 [AS4538] 202.199.26.248 17.118 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.

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