219.243.210.0/23

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	219.242.0.0/15
Registry	APNIC
ID	CERNET-CN

WHOIS Details

inetnum:        219.242.0.0 - 219.243.255.255
netname:        CERNET-CN
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
remarks:        confederation
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-10-20T00:56:47Z
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

Overlapping Ranges

BGP prefixes that contain 219.243.210.0/23

Range	ASN	Company	Num of IPs
219.242.0.0/15	AS4538	China Education and Research Network	131,072

Nearby Ranges

BGP prefixes that overlap with 219.243.0.0/16

Range	ASN	Company	Num of IPs
219.242.0.0/15	AS4538	China Education and Research Network	131,072

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
219.243.211.253	tunel.edu.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

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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
20.55.80.55	AS8075 Microsoft Corporation	`0.47ms` from Ashburn, US
46.246.138.215	AS1241 Forthnet	`2.63ms` from Athens, GR
3.14.196.7	AS16509 Amazon.com, Inc.	`0.12ms` from Columbus, US
65.22.33.55	AS12041 Afilias, Inc.	`0.11ms` from Dallas, US
103.16.224.167	AS140815 HTTVSERVER TECHNOLOGY COMPANY LIMITED	`0.27ms` from Hanoi, VN
86.128.117.199	AS2856 British Telecommunications PLC	`9.30ms` from London, GB
34.43.23.55	AS396982 Google LLC	`0.07ms` from Melbourne, AU
211.218.116.215	AS4766 Korea Telecom	`2.88ms` from Seoul, KR
1.173.56.55	AS3462 Data Communication Business Group	`3.79ms` from Taichung, TW
125.195.69.151	AS2518 BIGLOBE Inc.	`2.10ms` from Tokyo, JP
37.122.105.71	AS28812 PJSC Bashinformsvyaz	`9.00ms` from Yekaterinburg, RU
84.35.36.215	AS21221 Infopact Netwerkdiensten B.V.	`1.63ms` from Amsterdam, NL
104.142.245.39	AS33353 Sony Interactive Entertainment LLC	`0.68ms` from Atlanta, US
15.200.249.151	AS8987 Amazon Data Services Ireland Ltd	`0.40ms` from Boardman, US
65.114.114.7	AS209 CenturyLink Communications, LLC	`2.29ms` from Chicago, US
172.6.97.135	AS7018 AT&T Enterprises, LLC	`6.50ms` from Chicago, US
87.144.95.39	AS3320 Deutsche Telekom AG	`2.19ms` from Duesseldorf, DE
14.249.233.199	AS45899 VNPT Corp	`1.33ms` from Hanoi, VN
112.177.161.55	AS4766 Korea Telecom	`1.54ms` from Incheon, KR
67.245.154.119	AS12271 Charter Communications Inc	`3.40ms` from New York City, US
185.249.140.71	AS20986 EasyTeam SAS	`0.40ms` from Paris, FR
86.244.226.119	AS3215 Orange S.A.	`2.79ms` from Paris, FR
27.214.233.151	AS4837 CHINA UNICOM China169 Backbone	`3.63ms` from Qingdao, CN
44.202.209.55	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, US
101.80.147.7	AS4812 China Telecom (Group)	`2.13ms` from Shanghai, CN

Traceroute

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

traceroute -a -n -q1 -f6 219.243.210.221

traceroute to 219.243.210.221 (219.243.210.221): 64 hops max, 52 byte packets

6 [AS4538] 101.4.130.105 4.267 ms

7 [AS4538] 219.224.103.66 2.834 ms

8 *

9 *

10 [AS4538] 219.243.214.254 6.703 ms

11 [AS4538] 219.243.210.5 85.628 ms

12 [AS4538] 219.243.210.221 3.32 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

On April 25th 2026

What are IP address ranges?

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