223.128.0.0/17

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Parent Range 223.128.0.0/15
Registry APNIC
ID CDR-CERNET

WHOIS Details

inetnum:        223.128.0.0 - 223.129.255.255
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:  2020-09-03T09:16:07Z
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:          223.128.0.0/15
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2010-07-15T07:00:02Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 223.128.0.0/17

Range ASN Company Num of IPs
223.128.0.0/15 AS4538 China Education and Research Network 131,072

Nearby Ranges

BGP prefixes that overlap with 223.128.0.0/16

Range ASN Company Num of IPs
223.128.0.0/15 AS4538 China Education and Research Network 131,072

Hosted domains

There are 7 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
223.128.6.132 dgtrdt.gov.pk 2
223.128.77.169 treepic.cn 1
223.128.6.225 tarobina.com.pk 1
223.128.6.231 shaheencotton.com 1

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
45.138.230.225 AS206238 Freedom Internet BV 0.70ms from Amsterdam, NL
68.191.38.1 AS20115 Charter Communications LLC 6.92ms from Ashburn, US
174.81.132.1 AS20115 Charter Communications LLC 10.81ms from Atlanta, US
210.55.148.65 AS4648 Global-Gateway Internet 0.67ms from Auckland, NZ
123.101.4.65 AS4809 China Telecom Next Generation Carrier Network 15.52ms from Beijing, CN
61.181.100.1 AS4837 CHINA UNICOM China169 Backbone 6.04ms from Beijing, CN
77.246.79.81 AS9051 IncoNet Data Management sal 0.36ms from Beirut, LB
186.85.176.1 AS10620 Telmex Colombia S.A. 2.15ms from Bogota, CO
81.12.183.17 AS12302 Vodafone Romania S.A. 0.66ms from Bucharest, RO
201.212.249.1 AS7303 Telecom Argentina S.A. 4.80ms from Buenos Aires, AR
163.121.84.225 AS6127 IDSC 6.77ms from Cairo, EG
196.64.192.1 AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM 4.64ms from Casablanca, MA
170.233.43.177 AS28146 MHNET TELECOM 2.97ms from Chapeco, BR
216.130.76.1 AS7122 Bell Canada 16.26ms from Chicago, US
93.165.169.1 AS3292 TDC Holding A/S 4.49ms from Copenhagen, DK
188.179.40.1 AS3292 TDC Holding A/S 2.48ms from Copenhagen, DK
96.91.161.65 AS7922 Comcast Cable Communications, LLC 7.60ms from Detroit, US
86.152.22.113 AS2856 British Telecommunications PLC 4.25ms from Erith, GB
213.19.217.49 AS3356 Level 3 Parent, LLC 0.40ms from Frankfurt am Main, DE
194.156.212.1 AS39257 LUMi GmbH 0.41ms from Frankfurt am Main, DE
62.176.140.225 AS8426 ClaraNET LTD 8.12ms from Frankfurt am Main, DE
110.83.252.33 AS4134 CHINANET-BACKBONE 7.42ms from Fuzhou, CN
202.181.149.1 AS149175 UNION FU WAH DIGITAL TECHNOLOGY LIMITED 1.53ms from Hong Kong, HK
114.238.225.1 AS4134 CHINANET-BACKBONE 0.43ms from Huai'an, CN
39.61.112.1 AS17557 Pakistan Telecommunication Company Limited 8.04ms from Karachi, PK

Traceroute

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

$
traceroute -a -n -q1 -f2 -m16 223.128.77.101
traceroute to 223.128.77.101 (223.128.77.101): 16 hops max, 52 byte packets
3 *
4 *
5 *
6 *
7 [AS63838] 175.6.252.21 3.993 ms
8 [AS4134] 61.137.14.53 10.262 ms
9 [AS4134] 202.97.40.37 23.053 ms
10 *
11 *
12 [AS4538] 101.4.115.122 31.387 ms
13 [AS4538] 101.4.116.242 34.289 ms
14 *
15 *
16 *
Measurement taken from IPinfo ProbeNet in Chenzhou, CN
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.

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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