1. All IP Ranges
  2. 101.0.0.0/8
  3. 101.77.0.0/16
  4. AS4538  | 101.77.0.0/16

101.77.0.0/16

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

Sign up for free ›

Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 101.76.0.0/15
Registry APNIC
ID NJR-CERNET

WHOIS Details

inetnum:        101.76.0.0 - 101.77.255.255
netname:        NJR-CERNET
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
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:         [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

route:          101.76.0.0/15
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2010-12-13T06:08:02Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 101.77.0.0/16

Range ASN Company Num of IPs
101.76.0.0/15 AS4538 China Education and Research Network 131,072

Nearby Ranges

BGP prefixes that overlap with 101.0.0.0/8

Range ASN Company Num of IPs
101.160.0.0/11 AS1221 Telstra Limited 2,097,152
101.144.0.0/12 AS9394 China TieTong Telecommunications Corporation 1,048,576
101.16.0.0/12 AS4837 China Unicom Hebei province network 1,048,576
101.64.0.0/13 AS4837 UNICOM ZheJiang Province Network 524,288
101.224.0.0/13 AS4809 CHINANET SHANGHAI PROVINCE NETWORK 524,288
101.224.0.0/13 AS4812 CHINANET SHANGHAI PROVINCE NETWORK 524,288
101.224.0.0/13 AS4811 CHINANET SHANGHAI PROVINCE NETWORK 524,288
101.112.0.0/13 AS18291 VODAFONE AUSTRALIA PTY LIMITED 524,288
101.112.0.0/13 AS133612 VODAFONE AUSTRALIA PTY LIMITED 524,288
101.140.0.0/14 AS17511 OPTAGE Inc. 262,144
101.136.0.0/14 AS131591 Asia Pacific On-Line Service Inc. 262,144
101.136.0.0/14 AS17709 Asia Pacific On-Line Service Inc. 262,144
101.4.0.0/14 AS4538 China Education and Research Network 262,144
101.72.0.0/14 AS4837 China Unicom Hebei province network 262,144
101.204.0.0/14 AS4837 UNICOM Sichuan province network 262,144
101.42.0.0/15 AS45090 Tencent Cloud Computing (Beijing) Co., Ltd 131,072
101.60.0.0/15 AS5607 Sky UK Limited 131,072
101.34.0.0/15 AS45090 Tencent Cloud Computing (Beijing) Co., Ltd 131,072
101.76.0.0/15 AS4538 China Education and Research Network 131,072
101.248.0.0/15 AS4134 CHINANET XIZANG PROVINCE NETWORK 131,072
101.132.0.0/15 AS37963 Aliyun Computing Co., LTD 131,072
101.200.0.0/15 AS37963 Aliyun Computing Co., LTD 131,072
101.108.0.0/15 AS23969 TOT Public Company Limited 131,072
101.124.0.0/16 AS131486 Beijing Jingdong 360 Degree E-commerce Co., Ltd. 65,536
101.202.0.0/16 AS17878 DREAMMARK1 65,536
101.255.0.0/16 AS38511 PT Remala Abadi 65,536
101.37.0.0/16 AS37963 Aliyun Computing Co., LTD 65,536
101.124.0.0/16 AS23724 Beijing Jingdong 360 Degree E-commerce Co., Ltd. 65,536
101.51.0.0/16 AS23969 TOT Public Company Limited 65,536
101.51.0.0/16 AS23974 TOT Public Company Limited 65,536
101.127.0.0/16 AS138345 StarHub Internet Pte Ltd 65,536
101.103.0.0/16 AS1221 Telstra Limited 65,536
101.111.0.0/16 AS9365 its communications Inc. 65,536
101.98.0.0/16 AS9790 Two Degrees Mobile Limited 65,536
101.39.0.0/16 AS4847 Beijing GreatWall Broadband Telecom Service Co.,Ltd. 65,536
101.129.0.0/16 AS45075 China Central Television 65,536
101.40.0.0/16 AS4847 Beijing Teletron Telecom Engineering Co., Ltd. 65,536
101.197.0.0/16 AS55992 Beijing Qihu Technology Company Limited 65,536
101.127.0.0/16 AS55430 StarHub Internet Pte Ltd 65,536
101.127.0.0/16 AS4657 StarHub Internet Pte Ltd 65,536
101.78.128.0/17 AS9381 HKBN Enterprise Solutions HK Limited 32,768
101.1.128.0/17 AS7522 Pikara(STNet, Incorporated) 32,768
101.33.128.0/17 AS45090 Tencent Cloud Computing (Beijing) Co., Ltd 32,768
101.100.0.0/17 AS17492 Vector Communications Ltd 32,768
101.102.128.0/17 AS17676 SoftBank Corp. 32,768
101.33.128.0/17 AS132203 Tencent Cloud Computing (Beijing) Co., Ltd 32,768
101.99.128.0/17 AS3605 Kuentos Communications, Inc. 32,768
101.110.128.0/17 AS2914 NTT Ltd Japan Corporation 32,768
101.36.128.0/17 AS23724 CNISP-Union Technology (Beijing) Co., Ltd 32,768
101.235.0.0/17 AS10036 DLIVE 32,768

Hosted domains

There are 3 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
101.77.92.178 ntzx.net.cn 1
101.77.89.4 sfezn.cn 1
101.77.121.31 xn--zg-jo3cv7ojfx15f2ffpih62do10a6ef7onzl1c0jza.online 1

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

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

IP Address ASN Details
101.77.75.1 AS4538 China Education and Research Network Center 13.40ms from Shanghai, CN
101.77.117.81 AS4538 China Education and Research Network Center 9.99ms from Shanghai, CN
101.77.136.1 AS4538 China Education and Research Network Center 10.98ms from Shanghai, CN
101.77.83.1 AS4538 China Education and Research Network Center 15.18ms from Shanghai, CN
101.77.77.1 AS4538 China Education and Research Network Center 14.49ms from Shanghai, CN
101.77.63.1 AS4538 China Education and Research Network Center 11.30ms from Shanghai, CN
101.77.91.158 AS4538 China Education and Research Network Center 11.79ms from Shanghai, CN
101.77.159.1 AS4538 China Education and Research Network Center 8.64ms from Shanghai, CN
101.77.55.33 AS4538 China Education and Research Network Center 11.04ms from Shanghai, CN
101.77.57.57 AS4538 China Education and Research Network Center 11.74ms from Shanghai, CN
101.77.124.39 AS4538 China Education and Research Network Center 10.93ms from Shanghai, CN
101.77.71.127 AS4538 China Education and Research Network Center 12.76ms from Shanghai, CN
101.77.179.1 AS4538 China Education and Research Network Center 11.07ms from Shanghai, CN
101.77.27.250 AS4538 China Education and Research Network Center 9.54ms from Shanghai, CN
101.77.178.21 AS4538 China Education and Research Network Center 9.53ms from Shanghai, CN
101.77.73.94 AS4538 China Education and Research Network Center 10.18ms from Shanghai, CN
101.77.240.2 AS4538 China Education and Research Network Center 7.53ms from Shanghai, CN
101.77.69.254 AS4538 China Education and Research Network Center 16.29ms from Shanghai, CN
101.77.144.1 AS4538 China Education and Research Network Center 10.85ms from Shanghai, CN
101.77.49.254 AS4538 China Education and Research Network Center 13.11ms from Shanghai, CN
101.77.52.51 AS4538 China Education and Research Network Center 8.27ms from Shanghai, CN
101.77.92.94 AS4538 China Education and Research Network Center 12.22ms from Shanghai, CN
101.77.54.1 AS4538 China Education and Research Network Center 10.88ms from Shanghai, CN
101.77.93.12 AS4538 China Education and Research Network Center 11.26ms from Shanghai, 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
68.83.19.64 AS7922 Comcast Cable Communications, LLC 8.69ms from Ashburn, US
75.176.37.96 AS11426 Charter Communications Inc 8.24ms from Atlanta, US
18.198.152.176 AS16509 Amazon.com, Inc. 0.14ms from Frankfurt am Main, DE
2.166.201.240 AS3320 Deutsche Telekom AG 11.90ms from Frankfurt am Main, DE
8.139.187.0 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 2.06ms from Hangzhou, CN
174.170.32.208 AS7922 Comcast Cable Communications, LLC 4.75ms from Houston, US
124.90.203.112 AS4837 CHINA UNICOM China169 Backbone 7.04ms from Ningbo, CN
70.172.30.112 AS22773 Cox Communications Inc. 7.18ms from Phoenix, US
198.2.254.240 AS54600 PEG TECH INC 0.47ms from San Jose, US
119.149.6.0 AS38091 LG HelloVision Corp. 0.89ms from Seoul, KR
130.107.174.128 AS8075 Microsoft Corporation 0.17ms from Toronto, CA
85.221.188.160 AS13110 INEA sp. z o.o. 4.59ms from Warsaw, PL
77.60.28.144 AS1136 KPN B.V. 2.08ms from Amsterdam, NL
105.154.97.48 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 8.14ms from Casablanca, MA
175.16.131.192 AS4837 CHINA UNICOM China169 Backbone 4.14ms from Changchun, CN
90.201.50.128 AS5607 Sky UK Limited 1.99ms from Erith, GB
69.244.142.64 AS7922 Comcast Cable Communications, LLC 9.30ms from Flint, US
14.171.146.48 AS45899 VNPT Corp 2.86ms from Hanoi, VN
175.110.130.64 AS25019 Saudi Telecom Company JSC 2.88ms from Jeddah, SA
142.169.97.16 AS852 TELUS Communications Inc. 14.54ms from Montreal, CA
143.255.6.0 AS264117 Provedor Fibramais Ltda 12.74ms from Osasco, BR
52.2.34.96 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
71.198.25.240 AS7922 Comcast Cable Communications, LLC 4.94ms from San Jose, US
1.252.206.80 AS9318 SK Broadband Co Ltd 7.25ms from Seoul, KR
89.37.187.176 AS39425 NAV COMMUNICATIONS SRL 5.22ms from Timisoara, RO

Traceroute

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

$
traceroute -a -n -q1 -f3 -m19 101.77.115.145
traceroute to 101.77.115.145 (101.77.115.145): 19 hops max, 52 byte packets
3 [] 27.111.228.228 1.392 ms
4 *
5 *
6 *
7 [AS4538] 101.4.114.181 74.731 ms
8 *
9 *
10 [AS4538] 101.4.112.66 86.348 ms
11 [AS4538] 101.4.118.214 86.65 ms
12 *
13 *
14 [AS4538] 101.4.117.26 96.595 ms
15 [AS4538] 101.4.118.105 101.276 ms
17 *
18 *
19 *
Measurement taken from IPinfo ProbeNet in Singapore, SG
On

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
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs