219.244.48.0/20

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 219.244.48.0/20

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
219.244.128.0/20	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
219.244.221.0/24	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.

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Pingable IPs

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

IP Address	ASN	Details
219.244.57.126	AS4538 China Education and Research Network Center	24.10ms from Beijing, CN
219.244.51.242	AS4538 China Education and Research Network Center	20.89ms from Beijing, CN
219.244.53.233	AS4538 China Education and Research Network Center	21.22ms from Beijing, CN
219.244.56.159	AS4538 China Education and Research Network Center	23.16ms from Zhongwei, CN
219.244.58.126	AS4538 China Education and Research Network Center	23.95ms from Beijing, CN
219.244.59.243	AS4538 China Education and Research Network Center	20.48ms from Beijing, CN
219.244.52.106	AS4538 China Education and Research Network Center	23.86ms from Zhongwei, CN
219.244.48.18	AS4538 China Education and Research Network Center	21.71ms 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
14.245.62.180	AS45899 VNPT Corp	4.70ms from Da Nang, VN
45.24.100.212	AS7018 AT&T Enterprises, LLC	10.66ms from Dallas, US
119.118.240.4	AS4837 CHINA UNICOM China169 Backbone	8.84ms from Liaoyang, CN
192.100.16.228	AS55236 CBC	7.05ms from Los Angeles, US
98.37.161.180	AS7922 Comcast Cable Communications, LLC	6.35ms from San Jose, US
222.2.157.180	AS2516 KDDI CORPORATION	7.33ms from Tokyo, JP
92.69.107.148	AS1136 KPN B.V.	11.24ms from Amsterdam, NL
108.227.185.36	AS7018 AT&T Enterprises, LLC	3.45ms from Chicago, US
13.58.111.84	AS16509 Amazon.com, Inc.	0.13ms from Columbus, US
72.105.166.68	AS6167 Verizon Business	19.73ms from Richardson, US
183.215.49.84	AS56047 China Mobile communications corporation	2.24ms from Changsha, CN
36.110.174.116	AS23724 IDC, China Telecommunications Corporation	3.64ms from Beijing, CN
178.15.23.20	AS3209 Vodafone GmbH	6.76ms from Berlin, DE
73.110.225.68	AS7922 Comcast Cable Communications, LLC	3.75ms from Chicago, US
14.228.156.228	AS45899 VNPT Corp	2.23ms from Hanoi, VN
89.18.240.84	AS49283 Setera Oy	0.65ms from Helsinki, FI
43.128.17.148	AS132203 Tencent Building, Kejizhongyi Avenue	0.42ms from Hong Kong, HK
90.210.5.116	AS5607 Sky UK Limited	1.64ms from London, GB
112.248.243.68	AS4837 CHINA UNICOM China169 Backbone	8.94ms from Qingdao, CN
179.82.69.116	AS26599 TELEFÔNICA BRASIL S.A	15.79ms from Rio de Janeiro, BR
210.223.91.212	AS4766 Korea Telecom	0.82ms from Seoul, KR
2.205.15.244	AS3209 Vodafone GmbH	4.78ms from Duesseldorf, DE
162.202.219.68	AS7018 AT&T Enterprises, LLC	5.70ms from Durham, US
95.164.117.20	AS44477 PQ HOSTING PLUS S.R.L.	0.21ms from Frankfurt am Main, DE
218.72.123.228	AS4134 CHINANET-BACKBONE	6.17ms from Hangzhou, 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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