219.231.208.0/21

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:         [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

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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
67.163.181.213	AS7922 Comcast Cable Communications, LLC	`12.77ms` from Ashburn, US
94.68.68.229	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`8.75ms` from Athens, GR
139.84.212.69	AS20473 The Constant Company, LLC	`0.14ms` from Bengaluru, IN
181.9.25.69	AS7303 Telecom Argentina S.A.	`15.79ms` from Buenos Aires, AR
168.63.44.69	AS8075 Microsoft Corporation	`0.17ms` from Dublin, IE
79.214.107.229	AS3320 Deutsche Telekom AG	`4.98ms` from Duesseldorf, DE
196.1.205.37	AS15706 Sudatel (Sudan Telecom Co. Ltd)	`14.48ms` from Jeddah, SA
200.187.171.181	AS16735 ALGAR TELECOM S/A	`9.77ms` from Joao Pessoa, BR
36.37.69.117	AS4800 PT Aplikanusa Lintasarta	`0.69ms` from Medan, ID
87.14.223.5	AS3269 Telecom Italia S.p.A.	`5.74ms` from Milan, IT
183.213.205.213	AS56046 China Mobile communications corporation	`2.21ms` from Nanjing, CN
74.66.11.213	AS12271 Charter Communications Inc	`7.06ms` from New York City, US
191.187.73.213	AS28573 Claro NXT Telecomunicacoes Ltda	`7.96ms` from Osasco, BR
177.184.25.133	AS15830 Equinix (EMEA) Acquisition Enterprises B.V.	`0.81ms` from Rio de Janeiro, BR
15.218.67.149	AS20055 Wholesail networks LLC	`1.89ms` from Seattle, US
128.134.183.69	AS4766 Korea Telecom	`1.44ms` from Seoul, KR
14.200.133.117	AS7545 TPG Telecom Limited	`0.24ms` from Sydney, AU
218.32.203.181	AS9919 New Century InfoComm Tech Co., Ltd.	`1.09ms` from Taipei, TW
221.195.31.197	AS4837 CHINA UNICOM China169 Backbone	`9.92ms` from Tianjin, CN
188.164.147.245	AS31608 Gawex Media Sp. z o. o.	`9.53ms` from Warsaw, PL
83.0.91.165	AS5617 Orange Polska Spolka Akcyjna	`6.21ms` from Warsaw, PL
95.48.238.213	AS5617 Orange Polska Spolka Akcyjna	`1.51ms` from Wrocław, PL
114.252.213.165	AS4808 China Unicom Beijing Province Network	`3.62ms` from Beijing, CN
47.247.179.21	AS55836 Reliance Jio Infocomm Limited	`1.94ms` from Chennai, IN
93.107.152.37	AS15502 Vodafone Ireland Limited	`1.90ms` from Dublin, IE

Traceroute

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

traceroute -a -n -q1 -f8 -m13 219.231.212.102

traceroute to 219.231.212.102 (219.231.212.102): 13 hops max, 52 byte packets

8 [AS174] 38.150.75.1 41.921 ms

9 [AS4538] 101.4.114.181 184.862 ms

10 [AS4538] 101.4.114.193 178.159 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Seoul, KR

On December 14th 2025

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