222.205.0.0/16

AS4538 · China Education and Research Network Center

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Summary

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

WHOIS Details

inetnum:        222.204.0.0 - 222.205.255.255
netname:        SHR-CERNET
descr:          China Education and Research Network
descr:          Shanghai Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
remarks:        confederation
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:17Z
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 222.0.0.0/8

Range	ASN	Company	Num of IPs
222.96.0.0/12	AS17841	Korea Telecom	1,048,576
222.96.0.0/12	AS4766	Korea Telecom	1,048,576
222.96.0.0/12	AS9978	Korea Telecom	1,048,576
222.232.0.0/13	AS45370	SK Broadband Co Ltd	524,288
222.184.0.0/13	AS140293	CHINANET jiangsu province network	524,288
222.240.0.0/13	AS4134	CHINANET Hunan province network	524,288
222.176.0.0/13	AS134420	CHINANET Chongqing province network	524,288
222.240.0.0/13	AS149979	CHINANET Hunan province network	524,288
222.184.0.0/13	AS146966	CHINANET jiangsu province network	524,288
222.208.0.0/13	AS4134	CHINANET Sichuan province network	524,288
222.112.0.0/13	AS4766	Korea Telecom	524,288
222.184.0.0/13	AS4134	CHINANET jiangsu province network	524,288
222.208.0.0/13	AS139220	CHINANET Sichuan province network	524,288
222.184.0.0/13	AS4809	CHINANET jiangsu province network	524,288
222.240.0.0/13	AS63838	CHINANET Hunan province network	524,288
222.208.0.0/13	AS38283	CHINANET Sichuan province network	524,288
222.144.0.0/13	AS4713	NTT DOCOMO BUSINESS,Inc.	524,288
222.184.0.0/13	AS137697	CHINANET jiangsu province network	524,288
222.176.0.0/13	AS4134	CHINANET Chongqing province network	524,288
222.184.0.0/13	AS140292	CHINANET jiangsu province network	524,288
222.232.0.0/13	AS9318	SK Broadband Co Ltd	524,288
222.136.0.0/13	AS4837	China Unicom Henan province network	524,288
222.132.0.0/14	AS4837	China Unicom Shandong province network	262,144
222.92.0.0/14	AS134756	CHINANET jiangsu province network	262,144
222.76.0.0/14	AS133774	CHINANET fujian province network	262,144
222.92.0.0/14	AS4134	CHINANET jiangsu province network	262,144
222.76.0.0/14	AS4134	CHINANET fujian province network	262,144
222.92.0.0/14	AS4809	CHINANET jiangsu province network	262,144
222.92.0.0/14	AS140292	CHINANET jiangsu province network	262,144
222.28.0.0/14	AS4538	China Education and Research Network	262,144
222.128.0.0/14	AS4808	China Unicom Beijing province network	262,144
222.76.0.0/14	AS133776	CHINANET fujian province network	262,144
222.222.0.0/15	AS4134	CHINANET hebei province network	131,072
222.168.0.0/15	AS4134	CHINANET Jilin province network	131,072
222.88.0.0/15	AS4134	CHINANET henan province network	131,072
222.120.0.0/15	AS4766	Korea Telecom	131,072
222.125.0.0/16	AS17962	ShenZhen Topway Video Communication Co. Ltd.	65,536
222.74.0.0/16	AS4134	CHINANET neimeng province network	65,536
222.75.0.0/16	AS4134	CHINANET ningxia province network	65,536
222.199.0.0/16	AS4538	China Education and Research Network	65,536
222.159.0.0/16	AS7679	QTnet,Inc.	65,536
222.127.0.0/16	AS26344	Globe Telecom/Innove Communication	65,536
222.230.0.0/16	AS2519	ARTERIA Networks Corporation	65,536
222.254.0.0/16	AS45899	Vietnam Posts and Telecommunications(VNPT)	65,536
222.8.0.0/16	AS2516	KDDI CORPORATION	65,536
222.127.0.0/16	AS4775	Globe Telecom/Innove Communication	65,536
222.122.0.0/16	AS4766	Korea Telecom	65,536
222.45.0.0/16	AS56046	China Mobile Communications Group Co., Ltd.	65,536
222.248.0.0/16	AS17962	ShenZhen Topway Video Communication Co. Ltd.	65,536
222.225.0.0/16	AS2516	KDDI CORPORATION	65,536

Hosted domains

There are 3 domain names hosted across 3 IP addresses 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

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Pingable IPs

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

IP Address	ASN	Details
222.205.203.117	AS4538 China Education and Research Network Center	`15.40ms` from Guangzhou, CN
222.205.200.94	AS4538 China Education and Research Network Center	`15.22ms` from Guangzhou, CN
222.205.46.64	AS4538 China Education and Research Network Center	`5.70ms` from Hangzhou, CN
222.205.201.173	AS4538 China Education and Research Network Center	`16.46ms` from Guangzhou, CN
222.205.160.154	AS4538 China Education and Research Network Center	`14.68ms` from Guangzhou, CN
222.205.192.12	AS4538 China Education and Research Network Center	`14.36ms` from Guangzhou, CN
222.205.193.55	AS4538 China Education and Research Network Center	`14.38ms` from Guangzhou, CN
222.205.202.117	AS4538 China Education and Research Network Center	`14.82ms` from Guangzhou, CN
222.205.161.221	AS4538 China Education and Research Network Center	`14.06ms` from Guangzhou, 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
54.189.198.192	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
201.244.100.48	AS19429 ETB - Colombia	`1.00ms` from Bogota, CO
186.28.37.192	AS19429 ETB - Colombia	`0.72ms` from Bogota, CO
168.73.1.176	AS21928 T-Mobile USA, Inc.	`17.68ms` from Chicago, US
99.58.5.96	AS7018 AT&T Enterprises, LLC	`2.19ms` from Dallas, US
52.182.133.16	AS8075 Microsoft Corporation	`0.19ms` from Des Moines, US
24.70.102.32	AS6327 Shaw Communications	`5.47ms` from Kelowna, CA
182.203.77.16	AS4134 CHINANET-BACKBONE	`10.11ms` from Liaoyang, CN
195.223.176.144	AS3269 Telecom Italia S.p.A.	`4.74ms` from Milan, IT
73.25.6.144	AS7922 Comcast Cable Communications, LLC	`6.74ms` from Portland, US
194.212.52.0	AS13036 T-Mobile Czech Republic a.s.	`5.04ms` from Prague, CZ
184.72.197.80	AS14618 Amazon.com, Inc.	`0.40ms` from Reston, US
211.237.165.0	AS17854 SK Broadband Co Ltd	`5.06ms` from Seoul, KR
54.169.84.96	AS16509 Amazon.com, Inc.	`0.10ms` from Singapore, SG
91.115.92.0	AS8447 A1 Telekom Austria AG	`0.98ms` from Vienna, AT
111.166.26.240	AS4837 CHINA UNICOM China169 Backbone	`5.70ms` from Beijing, CN
27.8.147.96	AS4837 CHINA UNICOM China169 Backbone	`2.03ms` from Chongqing, CN
1.64.177.16	AS4760 HKT Limited	`8.30ms` from Hong Kong, HK
67.205.111.80	AS32613 Leaseweb Canada Inc.	`1.07ms` from Montreal, CA
198.211.117.32	AS14061 DigitalOcean, LLC	`0.18ms` from New York City, US
67.246.45.0	AS11351 Charter Communications Inc	`11.47ms` from Piscataway, US
114.56.94.144	AS16509 Amazon.com, Inc.	`5.62ms` from Seattle, US
183.124.38.128	AS4766 Korea Telecom	`2.08ms` from Seoul, KR
115.49.139.160	AS4837 CHINA UNICOM China169 Backbone	`3.91ms` from Zhengzhou, CN
79.72.32.0	AS31898 Oracle Corporation	`0.13ms` from Amsterdam, NL

Traceroute

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

traceroute -a -n -q1 -m14 222.205.76.88

traceroute to 222.205.76.88 (222.205.76.88): 14 hops max, 52 byte packets

1 [AS15169] 72.14.239.92 136.575 ms

2 [] 123.255.91.235 137.381 ms

3 *

4 [AS174] 38.150.75.1 150.444 ms

5 [AS4538] 101.4.114.181 177.51 ms

6 [AS4538] 101.4.115.6 191.504 ms

7 [AS4538] 101.4.114.169 172.98 ms

8 *

9 *

10 [AS4538] 101.4.118.250 216.177 ms

11 [AS4538] 101.4.117.46 210.55 ms

12 *

13 *

14 *

Measurement taken from

IPinfo ProbeNet in The Dalles, US

On January 30th 2026

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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