101.4.0.0/20

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	101.4.0.0/14
Registry	APNIC
ID	BJR-CERNET

WHOIS Details

inetnum:        101.4.0.0 - 101.7.255.255
netname:        BJR-CERNET
descr:          China Education and Research Network
descr:          Beijing Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
remarks:        confederation
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:24Z
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

route:          101.4.0.0/14
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2010-12-13T06:08:01Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 101.4.0.0/20

Range	ASN	Company	Num of IPs
101.4.0.0/14	AS4538	China Education and Research Network	262,144

Nearby Ranges

BGP prefixes that overlap with 101.4.0.0/16

Range	ASN	Company	Num of IPs
101.4.0.0/14	AS4538	China Education and Research Network	262,144

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

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

IP Address	ASN	Details
101.4.0.2	AS4538 China Education and Research Network Center	`2.04ms` from Beijing, 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
102.45.61.212	AS8452 TE-AS	`5.72ms` from Cairo, EG
24.76.27.148	AS6327 Shaw Communications	`18.12ms` from Chicago, US
54.155.168.228	AS16509 Amazon.com, Inc.	`0.16ms` from Dublin, IE
14.22.110.4	AS135089 China Telecom	`2.23ms` from Guangzhou, CN
2.220.33.180	AS5607 Sky UK Limited	`6.34ms` from London, GB
92.58.62.148	AS12479 Orange Espagne SA	`3.63ms` from Madrid, ES
184.164.177.20	AS11776 Breezeline	`4.51ms` from Miami, US
47.205.144.84	AS5650 Frontier Communications of America, Inc.	`6.72ms` from Miami, US
157.230.57.196	AS14061 DigitalOcean, LLC	`0.22ms` from New York City, US
201.61.245.148	AS27699 TELEFÔNICA BRASIL S.A	`1.19ms` from Osasco, BR
174.22.209.100	AS209 CenturyLink Communications, LLC	`3.44ms` from Phoenix, US
52.96.212.20	AS8075 Microsoft Corporation	`0.23ms` from Quebec, CA
210.115.35.20	AS17862 Kangwon National University	`2.31ms` from Seoul, KR
195.202.139.4	AS8339 kabelplus GmbH	`0.59ms` from Vienna, AT
83.31.40.196	AS5617 Orange Polska Spolka Akcyjna	`11.41ms` from Warsaw, PL
192.196.158.4	AS63410 PrivateSystems Networks	`0.41ms` from Atlanta, US
85.214.11.100	AS6786 Cronon GmbH	`0.83ms` from Berlin, DE
182.148.227.228	AS4134 CHINANET-BACKBONE	`3.21ms` from Chengdu, CN
80.55.192.68	AS5617 Orange Polska Spolka Akcyjna	`4.37ms` from Gdansk, PL
115.72.49.4	AS7552 Viettel Group	`1.41ms` from Ho Chi Minh City, VN
78.31.181.180	AS197643 DKT Ltd Television and Radio broadcasting company	`15.07ms` from Krasnodar, RU
150.229.81.100	AS6262 Commonwealth Scientific and Industrial	`11.53ms` from Melbourne, AU
151.84.24.196	AS1267 WIND TRE S.P.A.	`1.72ms` from Milan, IT
151.81.89.164	AS1267 WIND TRE S.P.A.	`7.93ms` from Milan, IT
38.153.233.116	AS55286 B2 Net Solutions Inc.	`0.17ms` from Montreal, CA

Traceroute

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

traceroute -a -n -q1 -m12 101.4.5.102

traceroute to 101.4.5.102 (101.4.5.102): 12 hops max, 52 byte packets

1 [AS15169] 64.233.174.23 1.362 ms

2 *

3 [AS1299] 80.239.130.173 1.787 ms

4 [AS4538] 101.4.114.181 36.233 ms

5 *

6 *

7 [AS4538] 101.4.112.98 35.823 ms

8 [AS4538] 101.4.113.229 36.693 ms

9 [AS4538] 101.4.0.2 38.393 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On November 14th 2025

What are IP address ranges?

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