219.244.18.0/24

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	219.244.16.0/20
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 219.244.18.0/24

Range	ASN	Company	Num of IPs
219.244.16.0/20	AS4538	China Education and Research Network	4,096
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
219.244.221.0/24	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
219.244.223.0/24	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

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

IP Address	ASN	Details
219.244.18.243	AS4538 China Education and Research Network Center	14.54ms from Chengdu, 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
23.6.64.152	AS16625 Akamai Technologies, Inc.	0.17ms from Ashburn, US
24.254.142.40	AS22773 Cox Communications Inc.	7.99ms from Ashburn, US
54.212.165.184	AS16509 Amazon.com, Inc.	0.10ms from Boardman, US
91.5.122.152	AS3320 Deutsche Telekom AG	7.83ms from Frankfurt am Main, DE
60.103.244.88	AS17676 SoftBank Corp.	3.58ms from Osaka, JP
210.196.176.248	AS2516 KDDI CORPORATION	2.02ms from Osaka, JP
153.132.237.248	AS4713 NTT Communications Corporation	2.37ms from Osaka, JP
211.176.190.168	AS9318 SK Broadband Co Ltd	1.56ms from Seoul, KR
223.32.36.184	AS9644 SK Telecom	10.47ms from Seoul, KR
83.205.124.168	AS3215 Orange S.A.	6.93ms from Paris, FR
24.116.1.104	AS11492 CABLE ONE, INC.	0.81ms from Phoenix, US
222.109.40.104	AS4766 Korea Telecom	1.38ms from Seoul, KR
217.249.239.200	AS3320 Deutsche Telekom AG	7.55ms from Frankfurt am Main, DE
220.241.93.216	AS4515 PCCW IMS Ltd (PCCW Business Internet Access)	2.07ms from Hong Kong, HK
148.69.139.184	AS12353 Vodafone Portugal	5.61ms from Lisbon, PT
50.60.245.40	AS25019 Saudi Telecom Company JSC	2.22ms from Riyadh, SA
191.55.11.168	AS53006 ALGAR TELECOM S/A	9.45ms from Sao Paulo, BR
112.168.68.72	AS4766 Korea Telecom	1.43ms from Seoul, KR
212.130.63.120	AS3292 TDC Holding A/S	0.84ms from Copenhagen, DK
79.207.37.232	AS3320 Deutsche Telekom AG	8.34ms from Frankfurt am Main, DE
97.131.119.88	AS6167 Verizon Business	13.00ms from Los Angeles, US
166.156.250.248	AS6167 Verizon Business	11.92ms from Mount Prospect, US
112.247.78.168	AS4837 CHINA UNICOM China169 Backbone	10.44ms from Qingdao, CN
220.93.13.24	AS4766 Korea Telecom	1.52ms from Seoul, KR
54.199.173.104	AS16509 Amazon.com, Inc.	0.13ms from Tokyo, JP

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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