219.231.16.0/21

AS4538  ·  China Education and Research Network Center

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        [email protected] 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:         [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        [email protected] was validated on 2025-08-15
abuse-mailbox:  [email protected]
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:         [email protected]
remarks:        [email protected]
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 are no domains currently hosted on this ASN.

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

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
23.112.106.101 AS7018 AT&T Enterprises, LLC 8.00ms from Atlanta, US
188.25.149.85 AS8708 DIGI ROMANIA S.A. 1.73ms from Bucharest, RO
186.141.40.245 AS22927 Telefonica de Argentina 12.09ms from Buenos Aires, AR
81.92.193.21 AS42831 UK Dedicated Servers Limited 0.18ms from Coventry, GB
93.131.183.85 AS6805 Telefonica Germany GmbH & Co.OHG 3.32ms from Duesseldorf, DE
24.6.222.5 AS7922 Comcast Cable Communications, LLC 7.38ms from Fremont, US
117.62.217.181 AS134756 CHINANET Nanjing Jishan IDC network 3.60ms from Huai'an, CN
213.7.68.69 AS6866 Cyprus Telecommunications Authority 2.73ms from Larnaca, CY
47.19.191.5 AS32696 Tri State Voice & Data, LLC 2.71ms from New York City, US
179.126.132.245 AS53006 ALGAR TELECOM S/A 6.18ms from Osasco, BR
89.87.75.181 AS5410 Bouygues Telecom SA 1.62ms from Paris, FR
115.21.223.53 AS4766 Korea Telecom 1.33ms from Seoul, KR
31.186.38.117 AS136988 LEASEWEB AUSTRALIA PTY LIMITED 1.94ms from Sydney, AU
118.79.212.133 AS4837 CHINA UNICOM China169 Backbone 4.09ms from Taiyuan, CN
176.228.82.21 AS12400 Partner Communications Ltd. 1.56ms from Tel Aviv, IL
99.235.187.21 AS812 Rogers Communications Canada Inc. 4.70ms from Toronto, CA
115.62.78.197 AS4837 CHINA UNICOM China169 Backbone 3.77ms from Zhengzhou, CN
50.237.40.165 AS7922 Comcast Cable Communications, LLC 1.85ms from Atlanta, US
111.166.90.245 AS4837 CHINA UNICOM China169 Backbone 5.08ms from Beijing, CN
102.98.96.101 AS36925 MEDITELECOM 4.57ms from Casablanca, MA
216.250.236.165 AS398300 OCIENT INC 0.41ms from Chicago, US
59.46.206.101 AS134762 CHINANET Liaoning province Dalian MAN network 0.91ms from Dalian, CN
92.30.90.245 AS13285 TalkTalk Communications Limited 3.83ms from Erith, GB
86.158.148.85 AS2856 British Telecommunications PLC 1.82ms from Erith, GB
79.223.33.197 AS3320 Deutsche Telekom AG 6.70ms from Frankfurt am Main, DE

Traceroute

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

$
traceroute -a -n -q1 -f4 -m12 219.231.23.54
traceroute to 219.231.23.54 (219.231.23.54): 12 hops max, 52 byte packets
5 [AS63949] 139.162.64.8 0.572 ms
6 [] 210.171.224.179 49.028 ms
7 *
8 [AS174] 38.150.75.1 51.995 ms
9 [AS4538] 101.4.114.181 86.753 ms
10 *
11 *
12 *
Measurement taken from IPinfo ProbeNet in Tokyo, JP
On

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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs