222.21.32.0/19

AS4538 · China Education and Research Network Center

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Summary

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

WHOIS Details

inetnum:        222.20.0.0 - 222.22.255.255
netname:        WHR-CERNET
descr:          China Education and Research Network
descr:          Wuhan Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
remarks:        confederation
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:27Z
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

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

Nearby Ranges

BGP prefixes that overlap with 222.21.0.0/16

No nearby ranges found.

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
219.236.76.163	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`8.02ms` from Beijing, CN
139.165.117.3	AS2611 BELNET	`2.44ms` from Brussels, BE
139.208.202.195	AS4837 CHINA UNICOM China169 Backbone	`10.68ms` from Changchun, CN
104.231.27.227	AS10796 Charter Communications Inc	`11.24ms` from Cleveland, US
117.251.88.83	AS9829 National Internet Backbone	`5.50ms` from Delhi, IN
218.97.220.19	AS17968 Daqing zhongji petroleum telecommunication construction limited cpmpany	`3.70ms` from Harbin, CN
72.185.10.147	AS33363 Charter Communications, Inc	`9.12ms` from Miami, US
218.92.211.3	AS4134 CHINANET-BACKBONE	`5.45ms` from Nanjing, CN
37.22.186.19	AS12389 PJSC Rostelecom	`9.09ms` from Novosibirsk, RU
178.104.24.83	AS24940 Hetzner Online GmbH	`0.23ms` from Nuernberg, DE
15.229.236.19	AS16509 Amazon.com, Inc.	`0.17ms` from Osasco, BR
81.218.215.35	AS8551 Bezeq International Ltd.	`9.51ms` from Petaẖ Tiqva, IL
182.40.201.211	AS136195 Qingdao, Shandong Province, P.R.China.	`1.43ms` from Qingdao, CN
185.227.214.3	AS15704 XTRA TELECOM S.A.	`4.57ms` from Valencia, ES
66.207.250.211	AS15153 StarVision, Inc.	`13.85ms` from Ashburn, US
134.224.193.3	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
184.28.248.179	AS20940 Akamai International B.V.	`0.40ms` from Buenos Aires, AR
41.44.105.99	AS8452 TE-AS	`6.16ms` from Cairo, EG
34.46.181.83	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
70.125.153.131	AS11427 Charter Communications Inc	`9.77ms` from Houston, US
195.189.11.179	AS25150 DCTel Ltd	`8.81ms` from Kyiv, UA
178.62.73.51	AS14061 DigitalOcean, LLC	`0.31ms` from London, GB
84.66.19.35	AS5378 Vodafone Limited	`7.08ms` from London, GB
73.156.23.147	AS7922 Comcast Cable Communications, LLC	`3.79ms` from Miami, US
101.58.142.163	AS210278 Sky Italia srl	`6.54ms` from Milan, IT

Traceroute

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

traceroute -a -n -q1 -m13 222.21.48.101

traceroute to 222.21.48.101 (222.21.48.101): 13 hops max, 52 byte packets

1 [AS15169] 72.14.239.92 248.569 ms

2 [] 123.255.91.235 250.016 ms

3 *

4 *

5 [AS4538] 101.4.114.181 300.949 ms

6 *

7 [AS4538] 101.4.117.81 292.7 ms

8 *

9 *

10 [AS4538] 210.43.145.86 298.216 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Santiago, CL

On March 13th 2026

What are IP address ranges?

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