202.127.216.0/21

AS4538 · China Education and Research Network Center

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Summary

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

WHOIS Details

inetnum:        202.127.216.0 - 202.127.223.255
netname:        BJR-CERNET
descr:          China Education and Research Network
descr:          Beijing Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
remarks:        old NJTU-CN returned on 19951109
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:18Z
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

Nearby Ranges

BGP prefixes that overlap with 202.127.0.0/16

Range	ASN	Company	Num of IPs
202.127.80.0/20	AS24255	Tannan Cable Television Corporation	4,096
202.127.176.0/20	AS24259	kanuma cable television Corporation	4,096
202.127.240.0/20	AS4538	China Education and Research Network	4,096
202.127.144.0/20	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	4,096
202.127.16.0/20	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	4,096
202.127.96.0/20	AS17910	PT. Tigatra Infokom	4,096
202.127.32.0/21	AS46030	PT Wahan Inovasi Nusantara	2,048
202.127.0.0/21	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	2,048
202.127.200.0/21	AS7497	The Hefei Branch of Chinese Academy of Sciences	2,048
202.127.40.0/21	AS4808	Information Center, Ministry of Agriculture and Rural Affairs, PRC	2,048
202.127.168.0/21	AS24396	Bank Of China(Hong Kong) Limited	2,048
202.127.12.0/22	AS9929	Nanjing Institute of Science and Technology Information	1,024
202.127.32.0/22	AS46030	PT Wahan Inovasi Nusantara	1,024
202.127.69.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
202.127.11.0/24	AS140220	Sky Broadband	256
202.127.8.0/24	AS140220	Sky Broadband	256
202.127.9.0/24	AS140220	Sky Broadband	256
202.127.106.0/24	AS17910	Infrastructure for Serial Customer	256
202.127.10.0/24	AS140220	Sky Broadband	256
202.127.73.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
202.127.74.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
202.127.76.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
202.127.77.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
202.127.78.0/24	AS4637	Telstra Global Internet Services Network /24 Block	256
202.127.79.0/24	AS4637	Telstra Global Internet Services Network Blocks	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
202.127.216.241	AS4538 China Education and Research Network Center	`1.68ms` from Wuhan, CN
202.127.217.85	AS4538 China Education and Research Network Center	`1.90ms` from Shenzhen, 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
87.214.13.197	AS13127 Odido Netherlands B.V.	`4.34ms` from Amsterdam, NL
98.18.35.245	AS7029 Windstream Communications LLC	`13.85ms` from Atlanta, US
62.48.206.165	AS15525 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	`1.22ms` from Braga, PT
107.201.238.245	AS7018 AT&T Enterprises, LLC	`3.66ms` from Dallas, US
84.152.150.5	AS3320 Deutsche Telekom AG	`4.46ms` from Duesseldorf, DE
171.61.212.117	AS24560 Bharti Airtel Ltd., Telemedia Services	`1.95ms` from Hyderabad, IN
86.129.122.69	AS2856 British Telecommunications PLC	`1.11ms` from London, GB
104.49.251.37	AS7018 AT&T Enterprises, LLC	`2.59ms` from Miami, US
212.210.248.181	AS3269 Telecom Italia S.p.A.	`8.43ms` from Milan, IT
218.72.95.21	AS4134 CHINANET-BACKBONE	`4.70ms` from Ningbo, CN
27.127.70.197	AS2518 BIGLOBE Inc.	`5.48ms` from Osaka, JP
27.5.52.197	AS17488 Hathway IP Over Cable Internet	`1.74ms` from Saint Thomas Mount, IN
94.78.23.21	AS15517 Netstream Holding AG	`0.43ms` from Zuerich, CH
5.161.190.5	AS213230 Hetzner Online GmbH	`0.18ms` from Ashburn, US
79.196.42.149	AS3320 Deutsche Telekom AG	`3.92ms` from Berlin, DE
191.81.75.149	AS22927 Telefonica de Argentina	`2.04ms` from Buenos Aires, AR
104.229.30.133	AS11351 Charter Communications Inc	`16.83ms` from Chicago, US
112.99.116.69	AS4134 CHINANET-BACKBONE	`13.54ms` from Dalian, CN
91.54.40.181	AS3320 Deutsche Telekom AG	`4.77ms` from Duesseldorf, DE
42.113.146.5	AS18403 FPT Telecom Company	`1.02ms` from Ho Chi Minh City, VN
39.48.112.197	AS17557 Pakistan Telecommunication Company Limited	`6.79ms` from Islamabad, PK
202.93.131.5	AS4382 PT. Indonusa System Integrator Prima	`0.77ms` from Jakarta, ID
208.73.199.21	AS63457 Liberty Connect	`12.43ms` from Kansas City, US
116.53.177.245	AS4134 CHINANET-BACKBONE	`7.01ms` from Kunming, CN
134.59.204.229	AS2200 Renater	`3.98ms` from Marseille, FR

Traceroute

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

traceroute -a -n -q1 -f7 -m14 202.127.220.245

traceroute to 202.127.220.245 (202.127.220.245): 14 hops max, 52 byte packets

7 [AS9002] 87.245.232.4 200.079 ms

8 [AS9002] 87.245.241.17 199.899 ms

9 *

10 [AS174] 38.150.75.1 248.518 ms

11 [AS4538] 101.4.114.181 285.099 ms

12 *

13 *

14 *

Measurement taken from

IPinfo ProbeNet in Bacau, RO

On December 14th 2025

What are IP address ranges?

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