222.30.0.0/21

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 222.30.0.0/21

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

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Pingable IPs

1,281 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
222.30.5.67	AS4538 China Education and Research Network Center	`4.77ms` from Beijing, CN
222.30.0.82	AS4538 China Education and Research Network Center	`5.73ms` from Beijing, CN
222.30.7.254	AS4538 China Education and Research Network Center	`5.73ms` from Beijing, CN
222.30.6.228	AS4538 China Education and Research Network Center	`4.75ms` from Beijing, CN
222.30.2.11	AS4538 China Education and Research Network Center	`4.75ms` from Beijing, CN
222.30.3.73	AS4538 China Education and Research Network Center	`4.80ms` from Beijing, CN
222.30.4.31	AS4538 China Education and Research Network Center	`4.71ms` 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
34.213.248.53	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
72.60.24.197	AS47583 Hostinger International Limited	`0.73ms` from Boston, US
102.97.175.229	AS36925 MEDITELECOM	`7.09ms` from Casablanca, MA
91.100.225.197	AS15516 DKTV A/S	`0.73ms` from Copenhagen, DK
194.239.19.181	AS3292 TDC Holding A/S	`1.07ms` from Copenhagen, DK
111.125.137.5	AS45232 Spacenet Internet Services Pvt. Ltd.	`1.67ms` from Delhi, IN
84.189.21.229	AS3320 Deutsche Telekom AG	`8.26ms` from Frankfurt am Main, DE
45.18.170.165	AS7018 AT&T Enterprises, LLC	`2.44ms` from Houston, US
47.152.146.53	AS5650 Frontier Communications of America, Inc.	`2.14ms` from Los Angeles, US
50.209.0.229	AS7922 Comcast Cable Communications, LLC	`6.72ms` from Minneapolis, US
103.69.89.37	AS136373 Allied It Infrastructure And Services Pvt Ltd	`0.23ms` from Mumbai, IN
36.155.157.5	AS56046 China Mobile communications corporation	`0.18ms` from Nanjing, CN
50.89.134.245	AS33363 Charter Communications, Inc	`12.49ms` from Orlando, US
177.93.179.149	AS262777 Neolink Telecomunicações LTDA	`4.78ms` from Osasco, BR
68.134.216.245	AS701 Verizon Business	`4.25ms` from Philadelphia, US
39.152.176.101	AS56044 China Mobile communications corporation	`6.37ms` from Tieling, CN
197.26.166.69	AS37705 TOPNET	`2.21ms` from Tunis, TN
130.222.42.229	AS245 Planning Research Corporation	`0.09ms` from Ashburn, US
47.252.93.21	AS45102 Alibaba (US) Technology Co., Ltd.	`0.27ms` from Ashburn, US
172.173.153.5	AS8075 Microsoft Corporation	`0.45ms` from Ashburn, US
101.42.104.101	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.77ms` from Beijing, CN
97.64.132.5	AS30036 Mediacom Communications Corp	`7.23ms` from Chicago, US
27.72.57.37	AS7552 Viettel Group	`0.95ms` from Hanoi, VN
1.180.17.5	AS4134 CHINANET-BACKBONE	`3.19ms` from Hohhot, CN
139.94.252.133	AS397412 TACHUS INFRASTRUCTURE LLC	`1.85ms` from Houston, US

Traceroute

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

traceroute -a -n -q1 -f6 -m11 222.30.5.222

traceroute to 222.30.5.222 (222.30.5.222): 11 hops max, 52 byte packets

6 [AS4538] 101.4.130.105 4.576 ms

7 [AS4538] 219.224.103.66 2.962 ms

8 [AS4538] 101.4.112.70 5.107 ms

9 *

10 *

11 *

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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