219.221.176.0/20

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:        219.221.0.0 - 219.221.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          Chengdu 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:  2020-10-20T00:56:53Z
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 219.221.0.0/16

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

Read more

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
52.181.201.132	AS8075 Microsoft Corporation	`0.60ms` from Boydton, US
199.241.229.52	AS398844 COMELEC SERVICES, INC	`19.69ms` from Chicago, US
78.16.185.52	AS2110 Enet Communications LIMITED	`8.41ms` from Dublin, IE
149.52.61.164	AS55201 SkyQuantum Internet Service	`0.30ms` from Fremont, US
113.170.165.68	AS45899 VNPT Corp	`2.86ms` from Ho Chi Minh City, VN
185.150.130.196	AS40368 Nixcon	`0.18ms` from Izmir, TR
2.217.246.116	AS5607 Sky UK Limited	`6.01ms` from London, GB
59.63.212.52	AS134238 CHINANET Jiangx province IDC network	`0.20ms` from Nanchang, CN
211.224.180.116	AS4766 Korea Telecom	`6.43ms` from Seoul, KR
182.160.155.84	AS55803 Hostopia Australia Web Pty Ltd	`0.25ms` from Sydney, AU
172.104.85.180	AS63949 Akamai Connected Cloud	`0.10ms` from Tokyo, JP
186.159.103.68	AS27745 Telefonia Bonairiano N.V.	`2.12ms` from Willemstad, CW
178.228.164.196	AS31615 Odido Netherlands B.V.	`7.08ms` from Amsterdam, NL
192.222.56.36	AS398090 Lambda	`0.44ms` from Ashburn, US
144.92.40.180	AS59 University of Wisconsin Madison	`5.38ms` from Chicago, US
194.25.236.116	AS3320 Deutsche Telekom AG	`0.94ms` from Frankfurt am Main, DE
162.158.98.68	AS14789 Cloudflare, Inc.	`1.05ms` from Halifax, CA
223.240.82.36	AS140527 China Telecom	`4.54ms` from Huai'an, CN
217.36.209.164	AS2856 British Telecommunications PLC	`1.49ms` from London, GB
94.30.56.116	AS5413 Wavenet Limited	`2.94ms` from London, GB
88.166.253.84	AS12322 Free SAS	`3.11ms` from Paris, FR
184.152.232.228	AS12271 Charter Communications Inc	`4.04ms` from Piscataway, US
186.250.49.116	AS262807 Redfox Telecomunicações Ltda.	`1.45ms` from Sao Paulo, BR
194.170.30.132	AS5384 Emirates Internet	`5.57ms` from Al Fujairah City, AE
41.42.1.212	AS8452 TE-AS	`4.73ms` from Cairo, EG

Traceroute

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

traceroute -a -n -q1 -m10 219.221.190.26

traceroute to 219.221.190.26 (219.221.190.26): 10 hops max, 52 byte packets

1 [AS31898] 140.91.230.6 0.083 ms

2 [AS9318] 39.120.201.130 0.438 ms

3 [AS9318] 39.120.201.129 2.378 ms

4 *

5 *

6 [] 123.255.91.118 48.83 ms

7 [AS4538] 101.4.114.181 75.91 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Chuncheon, KR

On December 28th 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