All IP Ranges
223.0.0.0/8
AS4538 | 223.128.0.0/15

223.128.0.0/15

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
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

Nearby Ranges

BGP prefixes that overlap with 223.0.0.0/8

Range	ASN	Company	Num of IPs
223.32.0.0/11	AS9644	SK Telecom	2,097,152
223.144.0.0/12	AS4134	CHINANET HUNAN PROVINCE NETWORK	1,048,576
223.8.0.0/13	AS4134	CHINANET SHANXI PROVINCE NETWORK	524,288
223.240.0.0/13	AS4134	CHINANET Anhui province network	524,288
223.240.0.0/13	AS134425	CHINANET Anhui province network	524,288
223.240.0.0/13	AS149178	CHINANET Anhui province network	524,288
223.240.0.0/13	AS142608	CHINANET Anhui province network	524,288
223.240.0.0/13	AS140527	CHINANET Anhui province network	524,288
223.240.0.0/13	AS132833	CHINANET Anhui province network	524,288
223.132.0.0/14	AS2527	Sony Network Communications Inc.	262,144
223.16.0.0/14	AS9304	HGC Global Communications Limited	262,144
223.4.0.0/14	AS45102	Aliyun Computing Co., LTD	262,144
223.4.0.0/14	AS37963	Aliyun Computing Co., LTD	262,144
223.216.0.0/14	AS4713	NTT DOCOMO BUSINESS,Inc.	262,144
223.248.0.0/14	AS9812	Oriental Cable Network Co., Ltd.	262,144
223.220.0.0/15	AS59223	CHINANET Qinghai Province Network	131,072
223.214.0.0/15	AS4134	CHINANET Anhui province network	131,072
223.198.0.0/15	AS4134	CHINANET HAINAN PROVINCE NETWORK	131,072
223.118.0.0/15	AS58453	China Mobile International Limited	131,072
223.220.0.0/15	AS4134	CHINANET Qinghai Province Network	131,072
223.118.0.0/15	AS58807	China Mobile International Limited	131,072
223.118.0.0/15	AS58411	China Mobile International Limited	131,072
223.212.0.0/15	AS17962	ShenZhen Topway Video Communication Co. Ltd.	131,072
223.220.0.0/15	AS132225	CHINANET Qinghai Province Network	131,072
223.22.0.0/15	AS131142	Asia Pacific On-Line Service Inc.	131,072
223.22.0.0/15	AS131591	Asia Pacific On-Line Service Inc.	131,072
223.192.0.0/15	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	131,072
223.2.0.0/15	AS4538	China Education and Research Network	131,072
223.118.0.0/15	AS136989	China Mobile International Limited	131,072
223.22.0.0/15	AS17709	Asia Pacific On-Line Service Inc.	131,072
223.30.0.0/15	AS9583	Sify Limited	131,072
223.22.0.0/15	AS7482	Asia Pacific On-Line Service Inc.	131,072
223.220.0.0/15	AS140061	CHINANET Qinghai Province Network	131,072
223.118.0.0/15	AS132389	China Mobile International Limited	131,072
223.222.0.0/16	AS17849	SK Broadband Co Ltd	65,536
223.24.0.0/16	AS132618	True Move Company Limited	65,536
223.24.0.0/16	AS132061	True Move Company Limited	65,536
223.24.0.0/16	AS7470	True Move Company Limited	65,536
223.197.0.0/16	AS4515	PCCW Business Internet Access	65,536
223.200.0.0/16	AS4782	Government Service Network (GSN)	65,536
223.123.0.0/17	AS59257	CMPak Limited	32,768
223.121.0.0/17	AS58453	Unit 09-18, Level 12, Tower 1	32,768
223.131.0.0/17	AS38096	TBROAD DobongGangbukGwangjinSeongdong	32,768
223.131.0.0/17	AS9689	TBROAD DobongGangbukGwangjinSeongdong	32,768
223.120.0.0/17	AS58453	Unit 09-18, Level 12, Tower 1	32,768
223.28.0.0/17	AS9930	TT DOTCOM SDN BHD	32,768
223.120.128.0/17	AS58807	China Mobile Communications Corporation	32,768
223.197.128.0/17	AS4760	Hong Kong Telecommunications (HKT) Limited Business Internet	32,768
223.121.0.0/17	AS58411	Unit 09-18, Level 12, Tower 1	32,768

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
223.128.6.134	electrech.pk	2

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
223.129.90.12	AS4538 China Education and Research Network Center	`38.07ms` from Chengdu, CN
223.128.158.10	AS4538 China Education and Research Network Center	`4.12ms` from Chengdu, CN
223.128.144.2	AS4538 China Education and Research Network Center	`4.13ms` from Chengdu, CN
223.129.252.1	AS4538 China Education and Research Network Center	`53.86ms` from Tianjin, CN
223.129.242.246	AS4538 China Education and Research Network Center	`52.63ms` from Beijing, CN
223.128.159.227	AS4538 China Education and Research Network Center	`4.42ms` 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
145.126.54.111	AS1103 SURF B.V.	`5.89ms` from Amsterdam, NL
71.225.194.191	AS7922 Comcast Cable Communications, LLC	`7.70ms` from Ashburn, US
93.219.134.15	AS3320 Deutsche Telekom AG	`5.35ms` from Berlin, DE
102.47.240.127	AS8452 TE-AS	`3.15ms` from Cairo, EG
171.88.143.79	AS4134 CHINANET-BACKBONE	`3.54ms` from Chengdu, CN
97.178.126.175	AS6167 Verizon Business	`15.48ms` from Dallas, US
221.201.118.111	AS4837 CHINA UNICOM China169 Backbone	`9.77ms` from Liaoyang, CN
86.163.214.63	AS2856 British Telecommunications PLC	`5.06ms` from London, GB
3.98.53.47	AS16509 Amazon.com, Inc.	`0.13ms` from Montreal, CA
180.137.79.255	AS4134 CHINANET-BACKBONE	`4.89ms` from Nanning, CN
75.214.124.143	AS6167 Verizon Business	`11.02ms` from New York City, US
183.131.242.95	AS4134 CHINANET-BACKBONE	`5.60ms` from Ningbo, CN
118.190.56.127	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.16ms` from Qingdao, CN
187.209.161.159	AS8151 UNINET	`11.52ms` from Santiago de Queretaro, MX
121.254.72.79	AS17809 VEE TIME CORP.	`3.35ms` from Taipei, TW
85.28.153.255	AS60806 "ZICOM NEXT" SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA	`6.67ms` from Warsaw, PL
172.79.36.79	AS5650 Frontier Communications of America, Inc.	`11.48ms` from Ashburn, US
34.211.95.31	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
35.166.141.159	AS16509 Amazon.com, Inc.	`0.13ms` from Boardman, US
181.69.233.63	AS27831 Colombia Móvil	`1.82ms` from Bogota, CO
88.80.233.255	AS31127 SATRO s.r.o.	`7.18ms` from Bratislava, SK
156.213.50.127	AS8452 TE-AS	`6.18ms` from Cairo, EG
197.147.243.239	AS36884 Wana Corporate	`10.12ms` from Casablanca, MA
51.112.77.31	AS16509 Amazon.com, Inc.	`0.11ms` from Dubai, AE
13.226.245.127	AS16509 Amazon.com, Inc.	`0.20ms` from Frankfurt am Main, DE

Traceroute

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

traceroute -a -n -q1 -m12 223.128.80.127

traceroute to 223.128.80.127 (223.128.80.127): 12 hops max, 52 byte packets

1 [AS30900] 185.108.129.1 0.832 ms

2 [AS6939] 184.104.205.24 3.383 ms

3 *

4 [AS6939] 184.105.223.254 19.459 ms

5 *

6 *

7 *

8 [] 123.255.91.118 257.265 ms

9 [AS4538] 101.4.114.181 279.013 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Dublin, IE

On December 6th 2025

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