223.3.0.0/16

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	223.2.0.0/15
Registry	APNIC
ID	NJR-CERNET

WHOIS Details

inetnum:        223.2.0.0 - 223.3.255.255
netname:        NJR-CERNET
descr:          China Education and Research Network
descr:          Nanjing 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:  2020-09-03T09:16:12Z
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 2025-01-22
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:         [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 2025-01-22
abuse-mailbox:  [email protected]
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:         [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:          223.2.0.0/15
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2010-07-15T07:00:01Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 223.3.0.0/16

Range	ASN	Company	Num of IPs
223.2.0.0/15	AS4538	China Education and Research Network	131,072

Nearby Ranges

BGP prefixes that overlap with 223.0.0.0/8

Range	ASN	Company	Num of IPs
223.64.0.0/10	AS9808	China Mobile Communications Corporation	4,194,304
223.32.0.0/11	AS9644	SK Telecom	2,097,152
223.144.0.0/12	AS4134	CHINANET HUNAN PROVINCE NETWORK	1,048,576
223.240.0.0/13	AS4134	CHINANET Anhui province network	524,288
223.8.0.0/13	AS4134	CHINANET SHANXI PROVINCE NETWORK	524,288
223.108.0.0/14	AS56046	China Mobile Communications Corporation	262,144
223.16.0.0/14	AS9304	HGC Global Communications Limited	262,144
223.96.0.0/14	AS24444	China Mobile Communications Corporation	262,144
223.132.0.0/14	AS2527	Sony Network Communications Inc.	262,144
223.216.0.0/14	AS4713	NTT COMMUNICATIONS CORPORATION	262,144
223.4.0.0/14	AS37963	Aliyun Computing Co., LTD	262,144
223.30.0.0/15	AS9583	Sify Limited	131,072
223.128.0.0/15	AS4538	China Education and Research Network	131,072
223.78.0.0/15	AS24444	China Mobile Communications Corporation	131,072
223.198.0.0/15	AS4134	CHINANET HAINAN PROVINCE NETWORK	131,072
223.212.0.0/15	AS17962	ShenZhen Topway Video Communication Co. Ltd.	131,072
223.80.0.0/15	AS24444	China Mobile Communications Corporation	131,072
223.2.0.0/15	AS4538	China Education and Research Network	131,072
223.192.0.0/15	AS7497	Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	131,072
223.22.0.0/15	AS17709	Asia Pacific On-Line Service Inc.	131,072
223.214.0.0/15	AS4134	CHINANET Anhui province network	131,072
223.70.0.0/15	AS56048	China Mobile Communications Corporation	131,072
223.112.0.0/15	AS56046	China Mobile Communications Corporation	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
223.106.0.0/15	AS56046	China Mobile Communications Corporation	131,072
223.206.0.0/16	AS45629	Triple T Broadband Public Company Limited	65,536
223.171.0.0/16	AS17853	LGTELECOM	65,536
223.119.0.0/16	AS58453	China Mobile International Limited	65,536
223.87.0.0/16	AS9808	China Mobile Communications Corporation	65,536
223.167.0.0/16	AS17621	CHINA UNICOM Shanghai city network	65,536
223.92.0.0/16	AS56041	China Mobile Communications Corporation	65,536
223.73.0.0/16	AS56040	China Mobile Communications Corporation	65,536
223.206.0.0/16	AS45758	Triple T Broadband Public Company Limited	65,536
223.67.0.0/16	AS56046	China Mobile Communications Corporation	65,536
223.89.0.0/16	AS24445	China Mobile Communications Corporation	65,536
223.95.0.0/16	AS56041	China Mobile Communications Corporation	65,536
223.4.0.0/16	AS37963	Aliyun Computing Co., LTD	65,536
223.88.0.0/16	AS24445	China Mobile Communications Corporation	65,536
223.100.0.0/16	AS56044	China Mobile Communications Corporation	65,536
223.105.0.0/16	AS56046	China Mobile Communications Corporation	65,536
223.16.0.0/16	AS9304	HGC Global Communications Limited	65,536
223.65.0.0/16	AS56046	China Mobile Communications Corporation	65,536
223.76.0.0/16	AS9808	China Mobile Communications Corporation	65,536
223.207.0.0/16	AS45629	Triple T Broadband Public Company Limited	65,536
223.75.0.0/16	AS9808	China Mobile Communications Corporation	65,536
223.224.0.0/16	AS9498	Bharti Airtel Limited	65,536
223.183.0.0/16	AS45609	Bharti Airtel Limited	65,536
223.207.0.0/16	AS45758	Triple T Broadband Public Company Limited	65,536

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