219.244.221.0/24

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	219.244.192.0/19
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 219.244.221.0/24

Range	ASN	Company	Num of IPs
219.244.192.0/19	AS4538	China Education and Research Network	8,192
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
219.244.64.0/21	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
219.244.212.0/24	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

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
20.114.243.56	AS8075 Microsoft Corporation	0.43ms from Boydton, US
196.14.61.232	AS3741 Dimension Data	1.89ms from Cape Town, ZA
108.225.10.200	AS7018 AT&T Enterprises, LLC	17.32ms from Los Angeles, US
125.214.81.248	AS17551 Anycast Global Backbone	1.72ms from Melbourne, AU
35.86.35.72	AS16509 Amazon.com, Inc.	0.55ms from Boardman, US
88.173.19.88	AS12322 Free SAS	9.05ms from Paris, FR
54.162.199.248	AS14618 Amazon.com, Inc.	0.22ms from Reston, US
34.143.237.24	AS396982 Google LLC	0.13ms from Singapore, SG
65.181.182.40	AS63902 SHINE TELECOM CO., LTD.	1.85ms from Singapore, SG
37.135.247.104	AS12479 Orange Espagne SA	14.01ms from Madrid, ES
46.167.239.56	AS16019 Vodafone Czech Republic a.s.	4.85ms from Prague, CZ
68.33.94.248	AS7922 Comcast Cable Communications, LLC	7.78ms from Ashburn, US
52.170.5.56	AS8075 Microsoft Corporation	0.42ms from Ashburn, US
34.240.131.168	AS16509 Amazon.com, Inc.	0.13ms from Dublin, IE
212.195.188.248	AS5410 Bouygues Telecom SA	9.89ms from Marseille, FR
117.45.251.40	AS4134 CHINANET-BACKBONE	4.09ms from Nanchang, CN
89.137.183.184	AS12302 Vodafone Romania S.A.	8.77ms from Bucharest, RO
62.4.70.232	AS13237 euNetworks GmbH	0.47ms from Frankfurt am Main, DE
86.58.23.136	AS3212 Telemach Slovenija d.o.o.	2.43ms from Ljubljana, SI
47.199.26.216	AS5650 Frontier Communications of America, Inc.	7.18ms from Miami, US
198.237.105.8	AS3701 University of Oregon	5.73ms from Portland, US
63.178.147.40	AS16509 Amazon.com, Inc.	0.36ms from Frankfurt am Main, DE
42.85.54.232	AS4837 CHINA UNICOM China169 Backbone	6.46ms from Liaoyang, CN
166.104.55.8	AS9321 Hanyang University	1.92ms from Seoul, KR
221.205.187.200	AS4837 CHINA UNICOM China169 Backbone	3.03ms from Taiyuan, CN

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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