222.28.64.0/20

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	222.28.0.0/14
Registry	APNIC
ID	BJR-CERNET

WHOIS Details

inetnum:        222.28.0.0 - 222.31.255.255
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
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:23Z
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

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Research Center,
address:        Main Bldg, 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 2025-08-15
abuse-mailbox:  abuse@cernet.edu.cn
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:         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

Overlapping Ranges

BGP prefixes that contain 222.28.64.0/20

Range	ASN	Company	Num of IPs
222.28.0.0/14	AS4538	China Education and Research Network	262,144

Nearby Ranges

BGP prefixes that overlap with 222.28.0.0/16

Range	ASN	Company	Num of IPs
222.28.0.0/14	AS4538	China Education and Research Network	262,144

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
222.28.79.156	ispectra.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

Read more

Pingable IPs

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

IP Address	ASN	Details
222.28.70.244	AS4538 China Education and Research Network Center	`3.41ms` 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
100.7.50.212	AS701 Verizon Business	`5.04ms` from Ashburn, US
114.253.156.196	AS4808 China Unicom Beijing Province Network	`3.98ms` from Beijing, CN
50.56.166.52	AS33070 Rackspace Hosting	`0.81ms` from Dallas, US
78.144.130.52	AS13285 TalkTalk Communications Limited	`8.53ms` from London, GB
78.147.221.148	AS13285 TalkTalk Communications Limited	`8.76ms` from London, GB
206.150.181.132	AS3561 CenturyLink Communications, LLC	`1.85ms` from London, GB
37.220.111.36	AS47264 IOMART MANAGED SERVICES LIMITED	`0.18ms` from London, GB
47.27.213.212	AS20115 Charter Communications LLC	`12.64ms` from Redding, US
52.201.21.20	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
115.195.171.228	AS4134 CHINANET-BACKBONE	`8.15ms` from Shanghai, CN
75.63.208.148	AS7018 AT&T Enterprises, LLC	`6.15ms` from Atlanta, US
176.252.188.148	AS5607 Sky UK Limited	`3.59ms` from London, GB
92.151.131.20	AS3215 Orange S.A.	`5.11ms` from Marseille, FR
184.112.139.4	AS7922 Comcast Cable Communications, LLC	`12.50ms` from New York City, US
15.236.229.4	AS16509 Amazon.com, Inc.	`0.16ms` from Paris, FR
88.101.75.20	AS5610 O2 Czech Republic, a.s.	`4.43ms` from Prague, CZ
155.97.187.20	AS17055 University of Utah	`1.94ms` from Salt Lake City, US
211.237.34.52	AS38661 abcle	`3.64ms` from Seoul, KR
110.40.31.228	AS38283 CHINANET SiChuan Telecom Internet Data Center	`1.96ms` from Chengdu, CN
24.154.147.4	AS27364 Armstrong	`18.23ms` from Cleveland, US
13.58.72.36	AS16509 Amazon.com, Inc.	`0.17ms` from Columbus, US
136.115.255.68	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
134.2.216.52	AS553 BelWue-Koordination	`6.05ms` from Frankfurt am Main, DE
90.237.46.116	AS3301 Telia Company AB	`13.73ms` from Goeteborg, SE
113.191.41.84	AS45899 VNPT Corp	`0.62ms` from Hanoi, VN

Traceroute

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

traceroute -a -n -q1 -f5 -m15 222.28.77.167

traceroute to 222.28.77.167 (222.28.77.167): 15 hops max, 52 byte packets

5 [AS134760] 124.236.1.45 1.342 ms

6 *

7 *

8 *

9 [AS4538] 101.4.118.25 7.569 ms

10 *

11 [AS4538] 101.4.112.98 6.088 ms

12 [AS4538] 101.4.113.229 9.352 ms

13 *

14 *

15 *

Measurement taken from

IPinfo ProbeNet in Shijiazhuang, CN

On January 19th 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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