222.30.168.0/21

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 222.30.168.0/21

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 222.30.0.0/16

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

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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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
222.30.168.6	AS4538 China Education and Research Network Center	`6.87ms` from Beijing, CN
222.30.175.1	AS4538 China Education and Research Network Center	`6.19ms` 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
4.150.124.53	AS8075 Microsoft Corporation	`0.23ms` from Boydton, US
143.204.155.149	AS16509 Amazon.com, Inc.	`0.10ms` from Chicago, US
41.221.6.213	AS36968 Electronic Communications Network (PTY) LTD	`0.21ms` from Johannesburg, ZA
220.165.0.101	AS134765 CHINANET Yunnan province IDC1 network	`1.15ms` from Kunming, CN
86.25.203.117	AS5089 Virgin Media Limited	`12.07ms` from Maidenhead, GB
202.130.209.245	AS38195 Superloop	`0.86ms` from Melbourne, AU
137.204.51.69	AS137 Consortium GARR	`4.48ms` from Milan, IT
62.112.131.101	AS152179 GLOBAL COMMUNICATION NETWORK LIMITED	`0.19ms` from Mumbai, IN
58.215.204.69	AS4134 CHINANET-BACKBONE	`3.41ms` from Nanjing, CN
171.38.65.117	AS4837 CHINA UNICOM China169 Backbone	`6.77ms` from Nanning, CN
184.171.26.5	AS3582 University of Oregon	`3.23ms` from Portland, US
83.101.128.229	AS29690 AI Jeraisy Electronic Services Company Ltd.	`1.17ms` from Riyadh, SA
208.76.232.5	AS40499 Washington Gas	`1.24ms` from Seattle, US
185.117.189.5	AS49737 Jobs.bg Ltd	`0.86ms` from Sofia, BG
99.244.179.69	AS812 Rogers Communications Canada Inc.	`3.88ms` from Toronto, CA
167.194.125.5	AS2897 Georgia Technology Authority	`4.11ms` from Atlanta, US
69.40.6.181	AS7029 Windstream Communications LLC	`6.79ms` from Atlanta, US
109.105.51.181	AS12570 O2 Czech Republic, a.s.	`3.10ms` from Brno, CZ
24.211.38.53	AS11426 Charter Communications Inc	`8.48ms` from Charlotte, US
64.191.85.101	AS53828 NETWORK INNOVATIONS, LLC	`0.59ms` from Dallas, US
54.74.202.21	AS16509 Amazon.com, Inc.	`0.36ms` from Dublin, IE
91.10.113.117	AS3320 Deutsche Telekom AG	`3.38ms` from Frankfurt am Main, DE
183.63.124.21	AS4134 CHINANET-BACKBONE	`2.14ms` from Guangzhou, CN
58.16.171.181	AS4837 CHINA UNICOM China169 Backbone	`6.95ms` from Guiyang, CN
20.239.92.85	AS8075 Microsoft Corporation	`0.61ms` from Hong Kong, HK

Traceroute

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

traceroute -a -n -q1 -f8 222.30.168.6

traceroute to 222.30.168.6 (222.30.168.6): 64 hops max, 52 byte packets

8 [AS4538] 101.4.130.61 4.723 ms

9 [AS4538] 219.224.103.66 5.235 ms

10 [AS4538] 101.4.113.234 7.916 ms

11 *

12 *

13 [AS4538] 222.30.168.6 8.63 ms

Measurement taken from

IPinfo ProbeNet in Beijing, 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.

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