202.120.209.0/24

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	202.120.208.0/20
Registry	APNIC
ID	CERNET-CN

Pingable IPs

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

IP Address	ASN	Details
202.120.209.12	AS4538 China Education and Research Network Center	1.93ms from Shanghai, 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
197.207.31.40	AS36947 Telecom Algeria	16.15ms from Algiers, DZ
185.220.205.120	AS41436 Kamatera Inc	0.26ms from Amsterdam, NL
192.236.209.8	AS54290 Hostwinds LLC.	0.21ms from Amsterdam, NL
40.71.171.8	AS8075 Microsoft Corporation	0.43ms from Ashburn, US
97.148.180.120	AS6167 Verizon Business	15.72ms from Atlanta, US
118.208.9.200	AS7545 TPG Telecom Limited	1.59ms from Brisbane, AU
195.250.56.24	AS39350 Joint Stock Company "BM-Bank"	1.43ms from Moscow, RU
94.181.137.88	AS41754 JSC "ER-Telecom Holding"	10.71ms from Moscow, RU
220.124.123.8	AS4766 Korea Telecom	4.69ms from Seoul, KR
71.178.225.136	AS701 Verizon Business	2.18ms from Ashburn, US
54.75.119.152	AS16509 Amazon.com, Inc.	0.17ms from Dublin, IE
104.25.25.216	AS13335 Cloudflare, Inc.	0.12ms from Johannesburg, ZA
88.11.154.152	AS3352 TELEFONICA DE ESPANA S.A.U.	7.68ms from Madrid, ES
156.35.101.168	AS766 RedIRIS Autonomous System	6.82ms from Madrid, ES
2.99.246.8	AS13285 TalkTalk Communications Limited	7.13ms from Manchester, GB
80.144.82.24	AS3320 Deutsche Telekom AG	3.98ms from Duesseldorf, DE
54.147.86.8	AS14618 Amazon.com, Inc.	0.16ms from Reston, US
113.60.30.232	AS17849 SK Broadband Co Ltd	3.05ms from Seoul, KR
222.104.69.120	AS4766 Korea Telecom	5.74ms from Seoul, KR
140.120.42.168	AS1659 Taiwan Academic Network (TANet) Information Center	1.01ms from Taichung, TW
65.185.126.24	AS10796 Charter Communications Inc	19.08ms from Toronto, CA
207.235.3.40	AS3356 Level 3 Parent, LLC	7.60ms from Dallas, US
82.0.14.184	AS5089 Virgin Media Limited	11.76ms from London, GB
18.101.220.136	AS16509 Amazon.com, Inc.	5.65ms from Madrid, ES
112.202.35.56	AS9299 Philippine Long Distance Telephone Company	5.25ms from Manila, PH

WHOIS Details

inetnum:        202.112.0.0 - 202.121.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          China Education and Research Network Center
descr:          Tsinghua University
descr:          Beijing, 100084
country:        CN
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
status:         ALLOCATED PORTABLE
remarks:        origin AS4538
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:29Z
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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        [email protected] 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:         [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        [email protected] was validated on 2025-01-22
abuse-mailbox:  [email protected]
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:         [email protected]
remarks:        [email protected]
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 202.120.209.0/24

Range	ASN	Company	Num of IPs
202.120.208.0/20	AS24364	China Education and Research Network	4,096
202.120.208.0/20	AS4538	China Education and Research Network	4,096
202.120.128.0/17	AS4538	China Education and Research Network	32,768
202.120.0.0/16	AS24364	China Education and Research Network	65,536
202.120.0.0/16	AS4538	China Education and Research Network	65,536
202.120.0.0/15	AS4538	China Education and Research Network	131,072

Nearby Ranges

BGP prefixes that overlap with 202.120.0.0/16

Range	ASN	Company	Num of IPs
202.120.0.0/15	AS4538	China Education and Research Network	131,072
202.120.0.0/16	AS4538	China Education and Research Network	65,536
202.120.0.0/16	AS24364	China Education and Research Network	65,536
202.120.0.0/17	AS4538	China Education and Research Network	32,768
202.120.128.0/17	AS4538	China Education and Research Network	32,768
202.120.0.0/18	AS24364	China Education and Research Network	16,384
202.120.0.0/18	AS4538	China Education and Research Network	16,384
202.120.224.0/19	AS4538	China Education and Research Network	8,192
202.120.224.0/19	AS24364	China Education and Research Network	8,192
202.120.112.0/20	AS4538	China Education and Research Network	4,096
202.120.208.0/20	AS4538	China Education and Research Network	4,096
202.120.208.0/20	AS24364	China Education and Research Network	4,096
202.120.160.0/20	AS4538	China Education and Research Network	4,096
202.120.128.0/20	AS4538	China Education and Research Network	4,096
202.120.64.0/20	AS4538	China Education and Research Network	4,096
202.120.176.0/20	AS4538	China Education and Research Network	4,096
202.120.192.0/21	AS4538	China Education and Research Network	2,048
202.120.200.0/22	AS4538	China Education and Research Network	1,024
202.120.247.0/24	AS4538	China Education and Research Network	256
202.120.43.0/24	AS4538	China Education and Research Network	256
202.120.40.0/24	AS4538	China Education and Research Network	256
202.120.108.0/24	AS4538	China Education and Research Network	256
202.120.125.0/24	AS4538	China Education and Research Network	256
202.120.188.0/24	AS4538	China Education and Research Network	256
202.120.181.0/24	AS4538	China Education and Research Network	256
202.120.118.0/24	AS4538	China Education and Research Network	256
202.120.126.0/24	AS4538	China Education and Research Network	256
202.120.235.0/24	AS4538	China Education and Research Network	256
202.120.19.0/24	AS4538	China Education and Research Network	256
202.120.146.0/24	AS4538	China Education and Research Network	256
202.120.2.0/24	AS4538	China Education and Research Network	256
202.120.234.0/24	AS4538	China Education and Research Network	256
202.120.58.0/24	AS4538	China Education and Research Network	256
202.120.215.0/24	AS4538	China Education and Research Network	256
202.120.224.0/24	AS4538	China Education and Research Network	256

Hosted domains

There are no domains currently hosted on this ASN.

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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.

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