219.231.0.0/20

AS4538 · China Education and Research Network Center

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Summary

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

WHOIS Details

inetnum:        219.230.0.0 - 219.231.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          Nanjing 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:  2020-09-03T09:16:27Z
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

Nearby Ranges

BGP prefixes that overlap with 219.231.0.0/16

No nearby ranges found.

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
219.231.0.101	xn--8mr094al6cjwphvi.top	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

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

IP Address	ASN	Details
219.231.15.245	AS4538 China Education and Research Network Center	`11.43ms` from Shanghai, CN
219.231.8.121	AS4538 China Education and Research Network Center	`11.72ms` from Shanghai, CN
219.231.0.227	AS4538 China Education and Research Network Center	`11.31ms` from Shanghai, CN
219.231.7.36	AS4538 China Education and Research Network Center	`11.19ms` from Shanghai, 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
51.144.54.116	AS8075 Microsoft Corporation	`0.21ms` from Amsterdam, NL
221.177.252.20	AS9808 China Mobile Communications Group Co., Ltd.	`2.41ms` from Beijing, CN
34.78.7.196	AS396982 Google LLC	`0.13ms` from Brussels, BE
97.135.7.36	AS6167 Verizon Business	`14.82ms` from Chicago, US
85.129.123.148	AS3292 TDC Holding A/S	`2.09ms` from Copenhagen, DK
40.128.46.116	AS7029 Windstream Communications LLC	`0.59ms` from Dallas, US
46.137.190.132	AS16509 Amazon.com, Inc.	`0.23ms` from Dublin, IE
154.216.47.68	AS132839 POWER LINE DATACENTER	`1.06ms` from Hong Kong, HK
154.212.94.180	AS134548 DXTL Tseung Kwan O Service	`0.76ms` from Hong Kong, HK
42.58.58.132	AS4837 CHINA UNICOM China169 Backbone	`6.50ms` from Liaoyang, CN
126.82.101.116	AS17676 SoftBank Corp.	`11.28ms` from Osaka, JP
128.223.160.4	AS3582 University of Oregon	`3.62ms` from Portland, US
4.248.28.180	AS8075 Microsoft Corporation	`0.16ms` from Quebec, CA
142.9.18.36	AS16802 Independent Electricity System Operator	`1.46ms` from Toronto, CA
85.127.127.196	AS8412 T-Mobile Austria GmbH	`8.87ms` from Vienna, AT
61.53.177.244	AS4837 CHINA UNICOM China169 Backbone	`4.72ms` from Zhengzhou, CN
221.219.125.20	AS4808 China Unicom Beijing Province Network	`4.11ms` from Beijing, CN
185.26.118.36	AS201236 NETCAST OBLAK d.o.o. Beograd	`0.73ms` from Belgrade, RS
211.26.10.68	AS9443 Vocus Retail	`2.48ms` from Brisbane, AU
34.34.138.244	AS396982 Google LLC	`0.15ms` from Brussels, BE
190.177.227.116	AS22927 Telefonica de Argentina	`2.06ms` from Buenos Aires, AR
75.192.19.164	AS6167 Verizon Business	`9.56ms` from Chicago, US
208.185.250.52	AS6461 Zayo Bandwidth	`1.74ms` from Dallas, US
186.235.140.164	AS53202 Acesso10 Telecom	`14.68ms` from Fortaleza, BR
88.86.31.100	AS29256 STE PDN Internal AS	`9.44ms` from Limassol, CY

Traceroute

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

traceroute -a -n -q1 -f5 -m21 219.231.9.11

traceroute to 219.231.9.11 (219.231.9.11): 21 hops max, 52 byte packets

5 [AS215859] 5.223.0.73 0.602 ms

6 [] 27.111.229.147 30.453 ms

7 *

8 [AS174] 38.150.75.1 34.179 ms

9 [AS4538] 101.4.114.181 68.445 ms

10 *

11 *

12 [AS4538] 101.4.112.66 85.207 ms

13 [AS4538] 101.4.118.214 86.054 ms

14 [AS4538] 101.4.112.62 91.93 ms

15 *

16 [AS4538] 101.4.115.186 157.988 ms

17 [AS4538] 101.4.115.14 91.868 ms

18 [AS4538] 210.45.229.51 93.008 ms

19 *

20 *

21 *

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On November 14th 2025

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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