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 Center,
address:        FIT-3-220, 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:        abuse@cernet.edu.cn was validated on 2026-03-05
mnt-by:         MAINT-CERNET-AP
last-modified:  2026-03-05T06:39:56Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Center,
address:        FIT-3-220, 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 2026-03-05
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-05T06:40:20Z
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	`2.68ms` 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
108.87.111.8	AS7018 AT&T Enterprises, LLC	`13.70ms` from Atlanta, US
186.134.216.88	AS22927 Telefonica de Argentina	`1.99ms` from Buenos Aires, AR
87.188.81.88	AS3320 Deutsche Telekom AG	`3.74ms` from Duesseldorf, DE
213.14.136.56	AS34984 Superonline Iletisim Hizmetleri A.S.	`3.04ms` from Izmir, TR
81.86.229.168	AS13285 TalkTalk Communications Limited	`2.54ms` from London, GB
81.150.173.200	AS2856 British Telecommunications PLC	`2.68ms` from London, GB
59.190.202.88	AS17511 OPTAGE Inc.	`3.20ms` from Osaka, JP
126.28.137.88	AS17676 SoftBank Corp.	`2.65ms` from Osaka, JP
189.33.50.72	AS28573 Claro NXT Telecomunicacoes Ltda	`1.99ms` from Osasco, BR
177.34.93.120	AS28573 Claro NXT Telecomunicacoes Ltda	`7.32ms` from Osasco, BR
124.129.79.232	AS4837 CHINA UNICOM China169 Backbone	`1.83ms` from Qingdao, CN
189.233.139.88	AS8151 UNINET	`4.22ms` from Santiago de Queretaro, MX
58.236.173.72	AS9318 SK Broadband Co Ltd	`1.02ms` from Seoul, KR
116.86.63.104	AS55430 Starhub Ltd	`1.02ms` from Singapore, SG
57.128.193.56	AS16276 OVH SAS	`0.12ms` from Warsaw, PL
20.215.136.8	AS8075 Microsoft Corporation	`0.14ms` from Warsaw, PL
86.95.167.136	AS1136 KPN B.V.	`1.34ms` from Amsterdam, NL
98.236.22.88	AS7922 Comcast Cable Communications, LLC	`10.55ms` from Ashburn, US
69.250.68.72	AS7922 Comcast Cable Communications, LLC	`5.24ms` from Ashburn, US
49.224.22.104	AS9500 One New Zealand Group Limited	`17.42ms` from Auckland, NZ
68.61.238.72	AS7922 Comcast Cable Communications, LLC	`10.79ms` from Chicago, US
141.2.42.104	AS20633 Johann Wolfgang Goethe-Universitat Frankfurt am Main	`0.64ms` from Frankfurt am Main, DE
92.131.1.40	AS3215 Orange S.A.	`6.13ms` from Frankfurt am Main, DE
104.174.178.88	AS20001 Charter Communications Inc	`5.29ms` from Los Angeles, US
72.219.107.56	AS22773 Cox Communications Inc.	`5.04ms` from Los Angeles, US

Traceroute

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

traceroute -a -n -q1 -f7 101.7.7.10

traceroute to 101.7.7.10 (101.7.7.10): 64 hops max, 52 byte packets

7 [AS4538] 219.224.103.225 10.128 ms

8 *

9 *

10 *

11 [AS4538] 101.4.113.218 40.201 ms

12 [AS4538] 42.247.33.66 37.475 ms

13 [AS4538] 101.7.7.10 42.499 ms

Measurement taken from

IPinfo ProbeNet in Nanjing, CN

On March 13th 2026

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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