121.49.160.0/19

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:         [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:          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 121.49.160.0/19

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

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

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

IP Address ASN Details
121.49.184.76 AS4538 China Education and Research Network Center 52.15ms from Zhongwei, CN
121.49.185.211 AS4538 China Education and Research Network Center 51.65ms from Chengdu, CN
121.49.163.6 AS4538 China Education and Research Network Center 18.26ms from Chengdu, CN
121.49.186.6 AS4538 China Education and Research Network Center 17.99ms from Chengdu, CN
121.49.182.100 AS4538 China Education and Research Network Center 51.40ms from Hohhot, CN
121.49.179.153 AS4538 China Education and Research Network Center 51.98ms from Chengdu, CN
121.49.187.42 AS4538 China Education and Research Network Center 17.55ms from Chengdu, 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
101.200.231.227 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.92ms from Beijing, CN
91.220.237.131 AS212537 Kia Slovakia s. r. o. 4.33ms from Bratislava, SK
41.40.148.195 AS8452 TE-AS 8.32ms from Cairo, EG
197.39.30.243 AS8452 TE-AS 3.25ms from Cairo, EG
45.23.247.99 AS7018 AT&T Enterprises, LLC 5.64ms from Chicago, US
213.120.54.227 AS2856 British Telecommunications PLC 4.98ms from Erith, GB
163.227.166.3 AS153849 PT HAQINET MEDIA COM 17.73ms from Jakarta, ID
174.142.209.179 AS32613 Leaseweb Canada Inc. 0.97ms from Montreal, CA
173.3.118.195 AS6128 Cablevision Systems Corp. 8.26ms from New York City, US
201.187.194.67 AS7418 TELEFÓNICA CHILE S.A. 9.28ms from Santiago, CL
23.252.56.3 AS54858 Wave Broadband 0.46ms from Seattle, US
34.64.100.131 AS396982 Google LLC 0.09ms from Seoul, KR
3.27.211.243 AS16509 Amazon.com, Inc. 0.55ms from Sydney, AU
109.120.252.3 AS8866 Vivacom Bulgaria EAD 0.68ms from Varna, BG
83.150.62.179 AS8758 Iway AG 0.52ms from Zuerich, CH
154.8.233.179 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.77ms from Beijing, CN
70.61.244.99 AS10796 Charter Communications Inc 10.25ms from Chicago, US
92.134.76.227 AS3215 Orange S.A. 10.42ms from Frankfurt am Main, DE
93.222.176.243 AS3320 Deutsche Telekom AG 6.41ms from Frankfurt am Main, DE
8.163.20.163 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 0.18ms from Guangzhou, CN
172.79.65.243 AS5650 Frontier Communications of America, Inc. 14.87ms from Los Angeles, US
151.232.200.211 AS58224 Iran Telecommunication Company PJS 17.10ms from Manama, BH
31.36.243.179 AS5410 Bouygues Telecom SA 6.44ms from Marseille, FR
46.16.97.35 AS16345 PJSC "Vimpelcom" 14.40ms from Moscow, RU
83.193.109.99 AS3215 Orange S.A. 17.02ms from Paris, FR

Traceroute

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

$
traceroute -a -n -q1 -f5 -m16 121.49.183.234
traceroute to 121.49.183.234 (121.49.183.234): 16 hops max, 52 byte packets
5 [] 123.255.91.118 54.774 ms
6 [AS4538] 101.4.114.181 89.084 ms
7 *
8 *
9 [AS4538] 101.4.112.66 111.406 ms
10 [AS4538] 101.4.112.29 121.581 ms
11 [AS4538] 101.4.117.53 134.598 ms
12 [AS4538] 101.4.116.198 156.888 ms
13 [AS4538] 101.4.116.186 146.44 ms
14 *
15 *
16 *
Measurement taken from IPinfo ProbeNet in Tokyo, JP
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.

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