101.7.7.0/24

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 101.7.7.0/24

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 101.7.0.0/16

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

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

IP Address	ASN	Details
101.7.7.7	AS4538 China Education and Research Network Center	`2.67ms` 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
23.74.14.168	AS20940 Akamai International B.V.	`0.56ms` from Boston, US
76.119.242.232	AS7922 Comcast Cable Communications, LLC	`10.47ms` from Boston, US
5.15.196.88	AS8708 DIGI ROMANIA S.A.	`6.75ms` from Bucharest, RO
196.115.71.232	AS36925 MEDITELECOM	`2.55ms` from Casablanca, MA
71.201.94.248	AS7922 Comcast Cable Communications, LLC	`4.39ms` from Chicago, US
95.208.243.168	AS3209 Vodafone GmbH	`9.08ms` from Frankfurt am Main, DE
35.32.76.216	AS27274 Central Michigan University	`2.79ms` from Grand Rapids, US
14.239.215.216	AS45899 VNPT Corp	`5.60ms` from Hanoi, VN
95.120.154.120	AS3352 TELEFONICA DE ESPANA S.A.U.	`6.70ms` from Madrid, ES
5.42.3.24	AS39493 CJSC Kolomna-Sviaz TV	`3.22ms` from Moscow, RU
108.158.60.8	AS16509 Amazon.com, Inc.	`0.33ms` from Mumbai, IN
45.170.170.24	AS268165 E C SATURNINO DE LIMA	`5.99ms` from Osasco, BR
34.12.225.8	AS396982 Google LLC	`0.12ms` from Oudeschip, NL
54.67.112.136	AS16509 Amazon.com, Inc.	`0.14ms` from San Jose, US
45.167.234.248	AS268066 PIONEIRA COMUNICACAO MULTIMIDIA LTDA	`7.81ms` from Sao Paulo, BR
183.97.202.152	AS4766 Korea Telecom	`2.07ms` from Seoul, KR
60.104.80.200	AS17676 SoftBank Corp.	`3.34ms` from Tokyo, JP
105.98.192.24	AS36947 Telecom Algeria	`8.96ms` from Valencia, ES
111.179.146.88	AS4134 CHINANET-BACKBONE	`4.56ms` from Wuhan, CN
103.234.119.248	AS150306 Dewan Enterprise	`5.07ms` from Dhaka, BD
3.125.217.184	AS16509 Amazon.com, Inc.	`0.11ms` from Frankfurt am Main, DE
172.90.39.8	AS20001 Charter Communications Inc	`4.35ms` from Los Angeles, US
88.44.198.104	AS3269 Telecom Italia S.p.A.	`5.19ms` from Milan, IT
101.142.17.104	AS17511 OPTAGE Inc.	`2.86ms` from Osaka, JP
118.17.131.248	AS4713 NTT DOCOMO BUSINESS,Inc.	`2.77ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 -f8 101.7.7.172

traceroute to 101.7.7.172 (101.7.7.172): 64 hops max, 52 byte packets

8 [AS4538] 101.4.130.77 5.962 ms

9 *

10 [AS4538] 101.4.113.218 5.756 ms

11 [AS4538] 42.247.33.66 5.111 ms

12 [AS4538] 101.7.7.172 4.884 ms

Measurement taken from

IPinfo ProbeNet in Beijing, CN

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.

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