202.203.0.0/16

AS4538  ·  China Education and Research Network Center

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Summary

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

WHOIS Details

inetnum:        202.202.0.0 - 202.203.255.255
netname:        CDR-CERNET
descr:          China Education and Research Network
descr:          Chengdu Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ASSIGNED NON-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:  2021-03-24T13:05:10Z
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

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

Nearby Ranges

BGP prefixes that overlap with 202.0.0.0/8

Range ASN Company Num of IPs
202.192.0.0/13 AS4538 China Education and Research Network 524,288
202.28.0.0/15 AS9562 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS134064 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS133042 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS137850 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS23687 Office of Info.Tech. Admin. for Educational Development 131,072
202.112.0.0/15 AS4538 China Education and Research Network 131,072
202.28.0.0/15 AS17479 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS24475 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS140075 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS9551 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS149503 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS9546 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS45847 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS55545 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS134690 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS137241 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS131246 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS4621 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS55488 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS4762 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS139753 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS56277 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS149800 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS131257 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS147312 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS10227 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS9533 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS150107 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS150410 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS141714 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS132514 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS138003 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS135616 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS136624 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS132493 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS131221 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS17827 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS132250 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS38265 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS137394 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS24344 Office of Info.Tech. Admin. for Educational Development 131,072
202.186.0.0/15 AS9930 TT DOTCOM SDN BHD 131,072
202.28.0.0/15 AS132879 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS38589 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS24328 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS137198 Office of Info.Tech. Admin. for Educational Development 131,072
202.184.0.0/15 AS9930 TT DOTCOM SDN BHD 131,072
202.28.0.0/15 AS37992 Office of Info.Tech. Admin. for Educational Development 131,072
202.28.0.0/15 AS133919 Office of Info.Tech. Admin. for Educational Development 131,072

Hosted domains

There are 7 domain names hosted across 6 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
202.203.144.33 ynni.edu.cn 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

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

IP Address ASN Details
202.203.163.230 AS4538 China Education and Research Network Center 54.32ms from Chengdu, CN
202.203.179.192 AS4538 China Education and Research Network Center 19.09ms from Chengdu, CN
202.203.159.147 AS4538 China Education and Research Network Center 18.52ms from Chengdu, CN
202.203.204.254 AS4538 China Education and Research Network Center 75.12ms from Beijing, CN
202.203.195.83 AS4538 China Education and Research Network Center 17.59ms from Chengdu, CN
202.203.225.10 AS4538 China Education and Research Network Center 18.49ms from Chengdu, CN
202.203.158.85 AS4538 China Education and Research Network Center 22.60ms from Chengdu, CN
202.203.150.239 AS4538 China Education and Research Network Center 36.89ms from Chengdu, CN
202.203.212.2 AS4538 China Education and Research Network Center 50.58ms from Chengdu, CN
202.203.192.34 AS4538 China Education and Research Network Center 50.83ms from Chengdu, CN
202.203.164.208 AS4538 China Education and Research Network Center 54.41ms from Chengdu, CN
202.203.222.218 AS4538 China Education and Research Network Center 51.32ms from Chengdu, CN
202.203.170.2 AS4538 China Education and Research Network Center 52.37ms from Chengdu, CN
202.203.144.1 AS4538 China Education and Research Network Center 18.06ms from Chengdu, CN
202.203.184.76 AS4538 China Education and Research Network Center 32.70ms from Chengdu, CN
202.203.173.23 AS4538 China Education and Research Network Center 52.43ms from Zhongwei, CN
202.203.198.1 AS4538 China Education and Research Network Center 51.41ms from Chengdu, CN
202.203.187.13 AS4538 China Education and Research Network Center 19.70ms from Chengdu, CN
202.203.200.150 AS4538 China Education and Research Network Center 17.68ms from Chengdu, CN
202.203.162.131 AS4538 China Education and Research Network Center 53.24ms from Chengdu, CN
202.203.199.25 AS4538 China Education and Research Network Center 50.99ms from Chengdu, CN
202.203.17.93 AS4538 China Education and Research Network Center 40.78ms from Guangzhou, CN
202.203.130.229 AS4538 China Education and Research Network Center 17.19ms from Chengdu, CN
202.203.63.23 AS4538 China Education and Research Network Center 17.27ms from Chengdu, CN
202.203.66.4 AS4538 China Education and Research Network Center 18.09ms from Chengdu, 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
186.17.176.112 AS23201 Telecel S.A. 8.21ms from Asuncion, PY
89.154.182.96 AS2860 NOS COMUNICACOES, S.A. 8.49ms from Braga, PT
46.50.10.160 AS42863 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 13.01ms from Braga, PT
75.244.193.64 AS6167 Verizon Business 19.46ms from Chicago, US
219.152.155.0 AS4134 CHINANET-BACKBONE 2.38ms from Chongqing, CN
79.197.198.112 AS3320 Deutsche Telekom AG 1.65ms from Hamburg, DE
79.144.250.208 AS3352 TELEFONICA DE ESPANA S.A.U. 8.56ms from Madrid, ES
83.38.47.128 AS3352 TELEFONICA DE ESPANA S.A.U. 1.67ms from Madrid, ES
45.47.181.208 AS11351 Charter Communications Inc 11.63ms from New York City, US
24.38.226.48 AS6128 Cablevision Systems Corp. 7.21ms from New York City, US
72.188.238.208 AS33363 Charter Communications, Inc 6.79ms from Orlando, US
90.122.64.240 AS3215 Orange S.A. 6.44ms from Paris, FR
211.201.219.80 AS9318 SK Broadband Co Ltd 1.81ms from Seoul, KR
95.202.147.32 AS3301 Telia Company AB 16.51ms from Stockholm, SE
74.124.160.48 AS22709 North State Telephone, LLC 7.76ms from Atlanta, US
79.231.244.112 AS3320 Deutsche Telekom AG 4.93ms from Berlin, DE
54.218.136.128 AS16509 Amazon.com, Inc. 0.20ms from Boardman, US
171.224.68.48 AS7552 Viettel Group 2.68ms from Hanoi, VN
103.97.200.16 AS147003 ALLIANCE INTELLIGENT TECHNOLOGIES PTE. LTD. 0.31ms from Hong Kong, HK
86.179.116.240 AS2856 British Telecommunications PLC 4.98ms from London, GB
96.62.138.160 AS2914 NTT America, Inc. 0.28ms from Los Angeles, US
168.221.139.128 AS20214 Comcast Cable Communications, LLC 1.90ms from Miami, US
195.14.143.224 AS6866 Cyprus Telecommunications Authority 0.98ms from Nicosia, CY
180.196.146.144 AS18126 Chubu Telecommunications Company, Inc. 4.59ms from Osaka, JP
133.208.235.80 AS2518 BIGLOBE Inc. 6.19ms from Osaka, JP

Traceroute

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

$
traceroute -a -n -q1 -f8 -m18 202.203.38.50
traceroute to 202.203.38.50 (202.203.38.50): 18 hops max, 52 byte packets
10 *
11 [AS4134] 202.97.96.29 32.511 ms
12 *
13 *
14 [AS4538] 101.4.115.122 50.943 ms
15 [AS4538] 101.4.117.137 63.275 ms
16 *
17 *
18 *
Measurement taken from IPinfo ProbeNet in Haikou, CN
On

What are IP address ranges?

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