219.244.32.0/21

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 219.244.32.0/21

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
219.244.64.0/21	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
219.244.221.0/24	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

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
158.108.5.5	AS9411 Kasetsart University, Thailand	0.94ms from Bangkok, TH
35.86.2.133	AS16509 Amazon.com, Inc.	0.59ms from Boardman, US
34.71.237.229	AS396982 Google LLC	0.12ms from Council Bluffs, US
97.139.38.117	AS6167 Verizon Business	15.09ms from Dallas, US
14.178.11.53	AS45899 VNPT Corp	3.48ms from Hanoi, VN
47.159.195.5	AS5650 Frontier Communications of America, Inc.	10.51ms from Los Angeles, US
88.23.183.117	AS3352 TELEFONICA DE ESPANA S.A.U.	6.33ms from Madrid, ES
88.63.177.213	AS3269 Telecom Italia S.p.A.	4.98ms from Milan, IT
86.64.173.133	AS15557 Societe Francaise Du Radiotelephone - SFR SA	1.65ms from Paris, FR
117.37.157.5	AS4134 CHINANET-BACKBONE	2.49ms from Xi'an, CN
108.171.52.5	AS58061 Scalaxy B.V.	0.26ms from Meppel, NL
65.140.215.181	AS209 CenturyLink Communications, LLC	3.41ms from Miami, US
54.145.222.85	AS14618 Amazon.com, Inc.	0.21ms from Reston, US
66.16.56.133	AS7029 Windstream Communications LLC	3.35ms from Secaucus, US
222.186.68.245	AS4134 CHINANET-BACKBONE	5.10ms from Shanghai, CN
98.204.49.245	AS7922 Comcast Cable Communications, LLC	5.91ms from Washington, US
203.150.211.37	AS4618 Internet Thailand Company Limited	0.63ms from Bangkok, TH
109.92.52.133	AS8400 TELEKOM SRBIJA a.d.	7.35ms from Belgrade, RS
48.214.227.117	AS8075 Microsoft Corporation	0.27ms from Des Moines, US
91.102.70.53	AS16247 M247 Ltd	7.16ms from London, GB
209.191.210.21	AS14371 Paul Bunyan Communications	8.92ms from Minneapolis, US
84.96.162.229	AS15557 Societe Francaise Du Radiotelephone - SFR SA	1.84ms from Paris, FR
141.101.49.165	AS25540 Alphalink SASU	0.66ms from Paris, FR
163.43.19.181	AS9370 SAKURA Internet Inc.	0.87ms from Tokyo, JP
159.138.70.69	AS136907 HUAWEI CLOUDS	1.08ms from Hong Kong, HK

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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