219.244.64.0/21

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	219.244.0.0/14
Registry	APNIC
ID	CERNET-CN

WHOIS Details

inetnum:        219.244.0.0 - 219.247.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          Xi'an 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:  2020-10-20T00:56:45Z
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

Overlapping Ranges

BGP prefixes that contain 219.244.64.0/21

Range	ASN	Company	Num of IPs
219.244.0.0/14	AS4538	China Education and Research Network	262,144

Nearby Ranges

BGP prefixes that overlap with 219.244.0.0/16

Range	ASN	Company	Num of IPs
219.244.0.0/14	AS4538	China Education and Research Network	262,144
219.244.160.0/19	AS4538	China Education and Research Network	8,192
219.244.192.0/19	AS4538	China Education and Research Network	8,192
219.244.224.0/19	AS4538	China Education and Research Network	8,192
219.244.160.0/19	AS24353	China Education and Research Network	8,192
219.244.112.0/20	AS4538	China Education and Research Network	4,096
219.244.16.0/20	AS4538	China Education and Research Network	4,096
219.244.0.0/20	AS4538	China Education and Research Network	4,096
219.244.80.0/20	AS4538	China Education and Research Network	4,096
219.244.96.0/20	AS4538	China Education and Research Network	4,096
219.244.48.0/20	AS4538	China Education and Research Network	4,096
219.244.128.0/20	AS4538	China Education and Research Network	4,096
219.244.40.0/21	AS4538	China Education and Research Network	2,048
219.244.32.0/21	AS4538	China Education and Research Network	2,048
219.244.222.0/24	AS4538	China Education and Research Network	256
219.244.0.0/24	AS4538	China Education and Research Network	256
219.244.221.0/24	AS4538	China Education and Research Network	256
219.244.212.0/24	AS4538	China Education and Research Network	256
219.244.29.0/24	AS4538	China Education and Research Network	256
219.244.2.0/24	AS4538	China Education and Research Network	256
219.244.18.0/24	AS4538	China Education and Research Network	256
219.244.223.0/24	AS4538	China Education and Research Network	256
219.244.28.0/24	AS4538	China Education and Research Network	256
219.244.16.0/24	AS4538	China Education and Research Network	256
219.244.208.0/24	AS4538	China Education and Research Network	256
219.244.17.0/24	AS4538	China Education and Research Network	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
219.244.70.128	AS4538 China Education and Research Network Center	20.55ms from Beijing, CN
219.244.68.20	AS4538 China Education and Research Network Center	25.51ms from Lanzhou, CN
219.244.67.222	AS4538 China Education and Research Network Center	23.46ms from Zhongwei, CN
219.244.71.148	AS4538 China Education and Research Network Center	21.35ms from Beijing, 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
81.207.27.133	AS1136 KPN B.V.	2.54ms from Amsterdam, NL
91.103.197.197	AS25511 JSC "RCS"	0.69ms from Moscow, RU
52.148.128.165	AS8075 Microsoft Corporation	0.23ms from Quincy, US
119.244.187.133	AS2518 BIGLOBE Inc.	5.64ms from Tokyo, JP
83.247.82.181	AS12414 Solcon Internetdiensten B.V.	6.02ms from Amsterdam, NL
104.199.216.69	AS396982 Google LLC	0.12ms from Chang-hua, TW
80.153.246.229	AS3320 Deutsche Telekom AG	10.34ms from Frankfurt am Main, DE
69.221.102.21	AS7018 AT&T Enterprises, LLC	4.75ms from San Antonio, US
82.211.147.53	AS16010 Magticom Ltd.	0.72ms from Tbilisi, GE
98.154.69.117	AS20001 Charter Communications Inc	0.77ms from Los Angeles, US
167.61.213.197	AS6057 Administracion Nacional de Telecomunicaciones	1.76ms from Montevideo, UY
192.177.47.117	AS214238 HOST TELECOM LTD	0.19ms from Paris, FR
69.46.58.85	AS40317 Peoples Communications Inc.	2.59ms from Dallas, US
113.175.130.5	AS45899 VNPT Corp	2.28ms from Hanoi, VN
176.27.70.85	AS5607 Sky UK Limited	6.39ms from London, GB
83.201.179.5	AS3215 Orange S.A.	16.74ms from Marseille, FR
124.254.142.213	AS38096 SK Broadband Co Ltd	2.52ms from Seoul, KR
47.93.13.165	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	2.08ms from Beijing, CN
34.243.26.245	AS16509 Amazon.com, Inc.	0.13ms from Dublin, IE
180.150.149.69	AS45187 Rackspace IT Hosting AS IT Hosting Provider Hong Kong	1.10ms from Hong Kong, HK
113.239.35.21	AS4837 CHINA UNICOM China169 Backbone	8.88ms from Liaoyang, CN
216.96.146.5	AS3450 University of Tennessee	7.10ms from Atlanta, US
104.209.195.85	AS8075 Microsoft Corporation	0.30ms from Boydton, US
150.240.142.101	AS36351 IBM Cloud	0.84ms from Dallas, US
47.187.129.85	AS5650 Frontier Communications of America, Inc.	1.85ms from Dallas, US

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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