121.49.4.0/24

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 121.49.4.0/24

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
121.49.197.0/24 AS4538 China Education and Research Network 256
121.49.0.0/24 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

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

IP Address ASN Details
121.49.4.1 AS4538 China Education and Research Network Center 21.93ms from Wuhan, 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
40.160.4.24 AS16276 OVH SAS 1.35ms from Ashburn, US
175.153.139.56 AS4837 CHINA UNICOM China169 Backbone 10.49ms from Chengdu, CN
14.107.47.40 AS4134 CHINANET-BACKBONE 2.95ms from Chongqing, CN
115.74.23.56 AS7552 Viettel Group 1.12ms from Ho Chi Minh City, VN
67.241.30.120 AS11351 Charter Communications Inc 18.80ms from New York City, US
179.218.105.56 AS28573 Claro NXT Telecomunicacoes Ltda 6.09ms from Rio de Janeiro, BR
186.221.38.88 AS28573 Claro NXT Telecomunicacoes Ltda 7.14ms from Rio de Janeiro, BR
41.45.1.216 AS8452 TE-AS 3.46ms from Cairo, EG
31.194.69.104 AS3269 Telecom Italia S.p.A. 5.42ms from Milan, IT
176.210.89.88 AS12389 PJSC Rostelecom 9.01ms from Novosibirsk, RU
173.69.176.40 AS701 Verizon Business 4.08ms from Philadelphia, US
23.204.78.168 AS16625 Akamai Technologies, Inc. 0.47ms from Miami, US
176.206.253.248 AS1267 WIND TRE S.P.A. 6.56ms from Milan, IT
58.90.229.56 AS4713 NTT Communications Corporation 19.94ms from Tokyo, JP
41.103.36.168 AS36947 Telecom Algeria 18.38ms from Valencia, ES
20.56.43.104 AS8075 Microsoft Corporation 1.33ms from Amsterdam, NL
68.233.58.24 AS394908 La-Z-Boy Incorporated 10.51ms from Chicago, US
192.5.87.24 AS683 Argonne National Laboratory 1.18ms from Chicago, US
74.47.200.72 AS7011 Frontier Communications of America, Inc. 15.89ms from Chicago, US
174.58.73.88 AS7922 Comcast Cable Communications, LLC 10.31ms from Miami, US
223.244.21.120 AS149178 China Telecom 6.03ms from Wuhan, CN
76.31.21.40 AS7922 Comcast Cable Communications, LLC 7.35ms from Houston, US
92.241.224.56 AS3226 OOO "NI" 7.60ms from Yekaterinburg, RU
37.152.183.136 AS202468 AbrArvan CDN and IaaS 14.74ms from Baku, AZ
88.181.71.248 AS12322 Free SAS 15.50ms from Paris, FR

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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