218.199.0.0/21

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	218.199.0.0/16
Registry	APNIC
ID	CERNET-CN

WHOIS Details

inetnum:        218.196.0.0 - 218.199.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          Wuhan 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:  2020-10-20T00:56:39Z
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 218.199.0.0/21

Range	ASN	Company	Num of IPs
218.199.0.0/16	AS24358	China Education and Research Network	65,536
218.199.0.0/16	AS4538	China Education and Research Network	65,536
218.192.0.0/13	AS4538	China Education and Research Network	524,288

Nearby Ranges

BGP prefixes that overlap with 218.199.0.0/16

Range	ASN	Company	Num of IPs
218.192.0.0/13	AS4538	China Education and Research Network	524,288
218.199.0.0/16	AS4538	China Education and Research Network	65,536
218.199.0.0/16	AS24358	China Education and Research Network	65,536
218.199.96.0/20	AS4538	China Education and Research Network	4,096
218.199.64.0/20	AS4538	China Education and Research Network	4,096
218.199.144.0/20	AS4538	China Education and Research Network	4,096
218.199.16.0/20	AS4538	China Education and Research Network	4,096
218.199.48.0/20	AS4538	China Education and Research Network	4,096
218.199.224.0/20	AS4538	China Education and Research Network	4,096
218.199.128.0/20	AS4538	China Education and Research Network	4,096
218.199.160.0/20	AS4538	China Education and Research Network	4,096
218.199.192.0/20	AS4538	China Education and Research Network	4,096
218.199.176.0/20	AS4538	China Education and Research Network	4,096
218.199.80.0/20	AS4538	China Education and Research Network	4,096
218.199.112.0/20	AS4538	China Education and Research Network	4,096
218.199.8.0/21	AS4538	China Education and Research Network	2,048
218.199.32.0/21	AS4538	China Education and Research Network	2,048
218.199.208.0/22	AS4538	China Education and Research Network	1,024
218.199.212.0/22	AS4538	China Education and Research Network	1,024
218.199.44.0/22	AS4538	China Education and Research Network	1,024
218.199.40.0/22	AS4538	China Education and Research Network	1,024
218.199.210.0/23	AS4538	China Education and Research Network	512
218.199.181.0/24	AS4538	China Education and Research Network	256
218.199.88.0/24	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
77.171.48.197	AS1136 KPN B.V.	2.35ms from Amsterdam, NL
190.231.214.133	AS7303 Telecom Argentina S.A.	2.41ms from Buenos Aires, AR
27.13.187.101	AS4837 CHINA UNICOM China169 Backbone	5.36ms from Chongqing, CN
86.145.122.245	AS2856 British Telecommunications PLC	6.28ms from London, GB
68.238.220.197	AS701 Verizon Business	8.81ms from Philadelphia, US
162.10.236.5	AS55256 Netskope Inc	0.24ms from Singapore, SG
153.171.133.21	AS4713 NTT Communications Corporation	3.36ms from Tokyo, JP
103.9.241.5	AS132309 Redd digital services pty ltd	0.64ms from Brisbane, AU
200.92.165.21	AS13999 Mega Cable, S.A. de C.V.	14.64ms from Guadalajara, MX
86.139.252.181	AS2856 British Telecommunications PLC	3.86ms from London, GB
81.145.29.133	AS2856 British Telecommunications PLC	0.77ms from London, GB
124.104.211.229	AS9299 Philippine Long Distance Telephone Company	3.17ms from Manila, PH
39.89.119.181	AS4837 CHINA UNICOM China169 Backbone	1.74ms from Qingdao, CN
73.202.77.21	AS7922 Comcast Cable Communications, LLC	8.02ms from Santa Clara, US
47.74.218.149	AS45102 Alibaba (US) Technology Co., Ltd.	0.73ms from Singapore, SG
4.193.224.117	AS8075 Microsoft Corporation	0.49ms from Singapore, SG
217.14.200.197	AS3226 OOO "NI"	7.37ms from Yekaterinburg, RU
147.9.16.101	AS32064 American University	1.95ms from Ashburn, US
52.18.194.229	AS16509 Amazon.com, Inc.	0.16ms from Dublin, IE
24.168.201.85	AS11426 Charter Communications Inc	6.35ms from Charlotte, US
122.178.191.117	AS24560 Bharti Airtel Ltd., Telemedia Services	10.87ms from Chennai, IN
179.107.198.69	AS28294 GIGA MAIS FIBRA TELECOMUNICACOES S.A. (BS COSTA)	6.50ms from Osasco, BR
222.72.55.149	AS4812 China Telecom (Group)	4.00ms from Shanghai, CN
218.242.7.181	AS9812 Oriental Cable Network Co., Ltd.	2.35ms from Shanghai, CN
149.28.17.229	AS20473 The Constant Company, LLC	0.16ms 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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