121.49.0.0/24

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 121.49.0.0/22
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 121.49.0.0/24

Range ASN Company Num of IPs
121.49.0.0/22 AS4538 China Education and Research Network 1,024
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
121.49.4.0/24 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

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

IP Address ASN Details
121.49.0.253 AS4538 China Education and Research Network Center 27.22ms 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
172.251.131.200 AS20001 Charter Communications Inc 3.72ms from Los Angeles, US
54.198.33.184 AS14618 Amazon.com, Inc. 0.22ms from Reston, US
83.223.199.24 AS56876 Ociris GmbH 0.21ms from Taipei, TW
101.17.5.216 AS4837 CHINA UNICOM China169 Backbone 8.96ms from Tianjin, CN
78.58.1.232 AS8764 Telia Lietuva, AB 3.29ms from Vilnius, LT
52.12.49.216 AS16509 Amazon.com, Inc. 0.14ms from Boardman, US
207.144.209.24 AS2711 Spirit Communications 0.83ms from Charlotte, US
172.169.186.72 AS8075 Microsoft Corporation 0.26ms from Des Moines, US
117.29.232.216 AS4134 CHINANET-BACKBONE 6.51ms from Fuzhou, CN
112.92.27.8 AS17816 China Unicom IP network China169 Guangdong province 10.73ms from Guangzhou, CN
95.146.80.168 AS2856 British Telecommunications PLC 4.55ms from London, GB
98.242.185.184 AS7922 Comcast Cable Communications, LLC 4.53ms from Miami, US
187.136.164.152 AS8151 UNINET 17.98ms from Dallas, US
96.16.168.104 AS16625 Akamai Technologies, Inc. 0.50ms from Hong Kong, HK
129.122.227.56 AS37645 Finstar - Sociedade de Investimento e Participacoes S.A 3.50ms from Luanda, AO
110.134.73.152 AS9824 JCOM Co., Ltd. 18.71ms from Osaka, JP
198.141.97.248 AS2571 DHL Information Services (Europe) s.r.o 0.42ms from Prague, CZ
41.42.101.200 AS8452 TE-AS 4.96ms from Cairo, EG
184.28.84.168 AS16625 Akamai Technologies, Inc. 0.78ms from Cape Town, ZA
93.207.146.8 AS3320 Deutsche Telekom AG 5.46ms from Duesseldorf, DE
223.28.0.248 AS9930 TTNET-MY 0.63ms from Kuala Lumpur, MY
15.160.79.200 AS16509 Amazon.com, Inc. 0.12ms from Milan, IT
183.76.12.88 AS4685 Asahi Net 4.74ms from Osaka, JP
47.121.99.72 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.50ms from Shenzhen, CN
89.154.76.200 AS2860 NOS COMUNICACOES, S.A. 4.17ms from Braga, PT

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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