125.221.30.0/23

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 125.216.0.0/13
Registry APNIC
ID WHR-CERNET

WHOIS Details

inetnum:        125.220.0.0 - 125.221.255.255
netname:        WHR-CERNET
descr:          China Education and Research Network
descr:          Wuhan Regional Network
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
remarks:        confederation
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:22Z
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:          125.221.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-01-05T03:10:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 125.221.30.0/23

Range ASN Company Num of IPs
125.216.0.0/13 AS4538 China Education and Research Network 524,288

Nearby Ranges

BGP prefixes that overlap with 125.221.0.0/16

Range ASN Company Num of IPs
125.216.0.0/13 AS4538 China Education and Research Network 524,288
125.221.160.0/19 AS4538 China Education and Research Network 8,192
125.221.64.0/19 AS4538 China Education and Research Network 8,192
125.221.96.0/20 AS4538 China Education and Research Network 4,096
125.221.224.0/20 AS4538 China Education and Research Network 4,096
125.221.192.0/20 AS4538 China Education and Research Network 4,096
125.221.48.0/20 AS4538 China Education and Research Network 4,096
125.221.112.0/20 AS4538 China Education and Research Network 4,096
125.221.32.0/21 AS4538 China Education and Research Network 2,048
125.221.208.0/21 AS4538 China Education and Research Network 2,048
125.221.192.0/21 AS4538 China Education and Research Network 2,048
125.221.128.0/22 AS4538 China Education and Research Network 1,024
125.221.16.0/22 AS4538 China Education and Research Network 1,024
125.221.242.0/23 AS4538 China Education and Research Network 512
125.221.8.0/23 AS4538 China Education and Research Network 512
125.221.216.0/23 AS4538 China Education and Research Network 512
125.221.244.0/23 AS4538 China Education and Research Network 512
125.221.240.0/23 AS4538 China Education and Research Network 512
125.221.10.0/23 AS4538 China Education and Research Network 512
125.221.40.0/23 AS4538 China Education and Research Network 512
125.221.250.0/23 AS4538 China Education and Research Network 512
125.221.252.0/23 AS4538 China Education and Research Network 512
125.221.4.0/23 AS4538 China Education and Research Network 512
125.221.218.0/23 AS4538 China Education and Research Network 512
125.221.220.0/23 AS4538 China Education and Research Network 512
125.221.254.0/23 AS4538 China Education and Research Network 512
125.221.248.0/23 AS4538 China Education and Research Network 512
125.221.2.0/23 AS4538 China Education and Research Network 512
125.221.42.0/23 AS4538 China Education and Research Network 512
125.221.200.0/23 AS4538 China Education and Research Network 512
125.221.12.0/23 AS4538 China Education and Research Network 512
125.221.14.0/23 AS4538 China Education and Research Network 512
125.221.44.0/23 AS4538 China Education and Research Network 512
125.221.20.0/24 AS4538 China Education and Research Network 256
125.221.40.0/24 AS4538 China Education and Research Network 256
125.221.21.0/24 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

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

IP Address ASN Details
125.221.30.1 AS4538 China Education and Research Network Center 1.80ms 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
81.169.246.103 AS6724 Strato GmbH 0.56ms from Berlin, DE
44.231.104.215 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US
38.170.69.167 AS55286 B2 Net Solutions Inc. 0.15ms from Buffalo, US
173.241.119.151 AS35979 WBI 6.75ms from Chicago, US
34.123.26.231 AS396982 Google LLC 0.12ms from Council Bluffs, US
87.175.25.167 AS3320 Deutsche Telekom AG 7.66ms from Frankfurt am Main, DE
217.239.133.135 AS3320 Deutsche Telekom AG 0.72ms from Hamburg, DE
62.244.253.215 AS15924 Vodafone Net Iletisim Hizmetler AS 1.27ms from Istanbul, TR
46.173.130.215 AS34743 NASHNET LTD 0.76ms from Kyiv, UA
79.8.34.103 AS3269 Telecom Italia S.p.A. 2.23ms from Milan, IT
69.112.137.151 AS6128 Cablevision Systems Corp. 8.73ms from Secaucus, US
20.115.47.167 AS8075 Microsoft Corporation 0.60ms from Ashburn, US
202.50.112.55 AS132255 PrimoWireless Ltd 5.33ms from Auckland, NZ
88.79.159.103 AS3209 Vodafone GmbH 6.50ms from Berlin, DE
171.250.20.103 AS7552 Viettel Group 2.86ms from Ho Chi Minh City, VN
83.224.172.135 AS30722 Vodafone Italia S.p.A. 14.73ms from Milan, IT
72.189.223.215 AS33363 Charter Communications, Inc 6.45ms from Orlando, US
83.109.120.87 AS2119 Telenor Norge AS 1.06ms from Oslo, NO
176.154.197.167 AS5410 Bouygues Telecom SA 15.19ms from Paris, FR
180.252.75.7 AS7713 PT Telekomunikasi Indonesia 7.79ms from Surabaya, ID
80.178.197.39 AS12400 Partner Communications Ltd. 1.33ms from Tel Aviv, IL
172.253.44.135 AS15169 Google LLC 0.14ms from Ashburn, US
147.136.115.71 AS399049 Joe Wheeler EMC 6.95ms from Atlanta, US
24.210.107.23 AS10796 Charter Communications Inc 13.74ms from Detroit, US
217.244.64.119 AS3320 Deutsche Telekom AG 8.14ms from Frankfurt am Main, DE

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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