219.231.216.0/21

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

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 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

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

Read more

Pingable IPs

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

IP Address	ASN	Details
219.231.222.108	AS4538 China Education and Research Network Center	`14.05ms` from Qingdao, CN
219.231.221.129	AS4538 China Education and Research Network Center	`13.21ms` from Qingdao, CN
219.231.223.93	AS4538 China Education and Research Network Center	`13.53ms` from Qingdao, CN
219.231.219.117	AS4538 China Education and Research Network Center	`13.18ms` from Qingdao, 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
202.131.123.101	AS17625 BlazeNet's Network	`2.69ms` from Ahmedabad, IN
170.224.147.21	AS17390 IBM	`0.58ms` from Amsterdam, NL
194.183.122.213	AS3257 GTT Communications Inc.	`0.39ms` from Amsterdam, NL
213.232.246.101	AS39824 JSC Alma Telecommunications	`17.30ms` from Astana, KZ
20.94.77.21	AS8075 Microsoft Corporation	`0.26ms` from Boydton, US
198.166.104.69	AS852 TELUS Communications Inc.	`1.43ms` from Edmonton, CA
86.170.88.213	AS2856 British Telecommunications PLC	`5.68ms` from Erith, GB
103.87.154.133	AS4787 PT Cyberindo Aditama	`0.39ms` from Jakarta, ID
20.219.30.53	AS8075 Microsoft Corporation	`0.15ms` from Lohogaon, IN
75.72.57.53	AS7922 Comcast Cable Communications, LLC	`5.86ms` from Minneapolis, US
188.66.243.245	AS50010 Omani Qatari Telecommunication Company SAOC	`4.20ms` from Muscat, OM
185.200.126.21	AS8529 Zain Omantel International FZ-LLC	`0.25ms` from Muscat, OM
177.174.54.117	AS26599 TELEFÔNICA BRASIL S.A	`6.59ms` from Osasco, BR
154.50.24.229	AS38235 ANGKOR DATA COMMUNICATION	`0.46ms` from Phnom Penh, KH
52.201.103.101	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US
200.165.186.181	AS7738 V tal	`1.35ms` from Rio de Janeiro, BR
185.80.182.5	AS49788 Nexthop AS	`1.53ms` from Sandefjord, NO
63.214.137.53	AS3356 Level 3 Parent, LLC	`0.39ms` from Seattle, US
23.248.177.229	AS21859 Zenlayer Inc	`0.17ms` from Taipei, TW
35.74.164.229	AS16509 Amazon.com, Inc.	`0.29ms` from Tokyo, JP
111.101.212.53	AS2516 KDDI CORPORATION	`0.95ms` from Tokyo, JP
141.101.108.197	AS14789 Cloudflare, Inc.	`4.33ms` from Bogota, CO
86.125.124.117	AS8708 DIGI ROMANIA S.A.	`4.72ms` from Bucharest, RO
70.62.101.229	AS11426 Charter Communications Inc	`0.54ms` from Charlotte, US
216.176.5.165	AS30517 Great Lakes Comnet, Inc.	`0.48ms` from Chicago, US

Traceroute

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

traceroute -a -n -q1 -m13 219.231.220.41

traceroute to 219.231.220.41 (219.231.220.41): 13 hops max, 52 byte packets

1 [AS14061] 5.101.110.151 4.077 ms

2 *

3 *

4 *

5 *

6 [AS9002] 87.245.232.4 161.805 ms

7 [AS9002] 87.245.241.17 180.116 ms

8 *

9 [AS174] 38.150.75.1 184.858 ms

10 [AS4538] 101.4.114.181 230.385 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On December 6th 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.

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.

Get Started for Free Contact Sales