121.49.197.0/24

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 121.48.0.0/15
Registry APNIC
ID CDR-CERNET

WHOIS Details

inetnum:        121.48.0.0 - 121.49.255.255
netname:        CDR-CERNET
descr:          China Education and Research Network
descr:          Chengdu 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:  2020-09-03T09:16:00Z
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 2025-01-22
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-01-22T13:47:43Z
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 2025-01-22
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-01-22T16:25:45Z
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:          121.49.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-01-05T03:10:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 121.49.197.0/24

Range ASN Company Num of IPs
121.48.0.0/15 AS4538 China Education and Research Network 131,072

Nearby Ranges

BGP prefixes that overlap with 121.49.0.0/16

Range ASN Company Num of IPs
121.48.0.0/15 AS4538 China Education and Research Network 131,072
121.49.64.0/18 AS4538 China Education and Research Network 16,384
121.49.160.0/19 AS4538 China Education and Research Network 8,192
121.49.16.0/20 AS4538 China Education and Research Network 4,096
121.49.32.0/21 AS4538 China Education and Research Network 2,048
121.49.200.0/21 AS4538 China Education and Research Network 2,048
121.49.0.0/22 AS4538 China Education and Research Network 1,024
121.49.5.0/24 AS4538 China Education and Research Network 256
121.49.198.0/24 AS4538 China Education and Research Network 256
121.49.152.0/24 AS4538 China Education and Research Network 256
121.49.0.0/24 AS4538 China Education and Research Network 256
121.49.4.0/24 AS4538 China Education and Research Network 256
121.49.199.0/24 AS4538 China Education and Research Network 256
121.49.128.0/24 AS4538 China Education and Research Network 256
121.49.195.0/24 AS4538 China Education and Research Network 256
121.49.193.0/24 AS4538 China Education and Research Network 256
121.49.153.0/24 AS4538 China Education and Research Network 256
121.49.192.0/24 AS4538 China Education and Research Network 256
121.49.196.0/24 AS4538 China Education and Research Network 256

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

Pingable IPs

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

IP Address ASN Details
121.49.197.124 AS4538 China Education and Research Network Center 28.75ms from Guiyang, 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
77.163.26.200 AS1136 KPN B.V. 1.22ms from Amsterdam, NL
5.14.161.56 AS8708 DIGI ROMANIA S.A. 9.79ms from Bucharest, RO
77.223.96.120 AS50340 JSC Selectel 0.79ms from Moscow, RU
180.0.101.120 AS4713 NTT Communications Corporation 2.47ms from Osaka, JP
219.92.215.200 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 2.48ms from Sepang, MY
99.235.115.72 AS812 Rogers Communications Canada Inc. 3.77ms from Toronto, CA
80.218.159.24 AS6730 Sunrise GmbH 6.02ms from Zuerich, CH
36.170.93.152 AS139080 The Internet Data Center of Sichuan Mobile Communication Company Limited 2.52ms from Chengdu, CN
45.17.23.136 AS7018 AT&T Enterprises, LLC 3.71ms from Dallas, US
59.183.179.200 AS9829 National Internet Backbone 9.04ms from Delhi, IN
66.139.35.136 AS7018 AT&T Enterprises, LLC 4.56ms from Kansas City, US
87.2.23.104 AS3269 Telecom Italia S.p.A. 4.77ms from Milan, IT
193.179.200.24 AS13036 T-Mobile Czech Republic a.s. 0.46ms from Prague, CZ
123.135.38.200 AS4837 CHINA UNICOM China169 Backbone 5.11ms from Qingdao, CN
73.70.197.136 AS7922 Comcast Cable Communications, LLC 6.36ms from Santa Clara, US
189.150.197.200 AS8151 UNINET 18.73ms from Santiago de Queretaro, MX
187.200.110.104 AS8151 UNINET 1.11ms from Santiago de Queretaro, MX
191.8.48.24 AS27699 TELEFÔNICA BRASIL S.A 15.09ms from Sao Paulo, BR
83.78.211.104 AS3303 Swisscom (Switzerland) Ltd 1.77ms from Zuerich, CH
40.79.34.168 AS8075 Microsoft Corporation 0.38ms from Boydton, US
73.215.30.168 AS7922 Comcast Cable Communications, LLC 5.60ms from New York City, US
115.209.226.136 AS4134 CHINANET-BACKBONE 10.80ms from Hangzhou, CN
123.131.242.120 AS4837 CHINA UNICOM China169 Backbone 8.62ms from Qingdao, CN
83.227.75.56 AS2119 Telenor Norge AS 1.09ms from Stockholm, SE
194.118.241.8 AS8447 A1 Telekom Austria AG 12.60ms from Vienna, AT

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.

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