202.120.208.0/20

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	202.120.128.0/17
Registry	APNIC
ID	CERNET-CN

Pingable IPs

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

IP Address	ASN	Details
202.120.218.251	AS4538 China Education and Research Network Center	2.28ms from Shanghai, CN
202.120.215.96	AS4538 China Education and Research Network Center	2.26ms from Shanghai, CN
202.120.222.180	AS4538 China Education and Research Network Center	2.20ms from Shanghai, CN
202.120.223.61	AS4538 China Education and Research Network Center	2.32ms from Shanghai, CN
202.120.221.7	AS4538 China Education and Research Network Center	2.82ms from Shanghai, CN
202.120.210.254	AS4538 China Education and Research Network Center	2.79ms from Shanghai, CN
202.120.208.247	AS4538 China Education and Research Network Center	2.75ms from Shanghai, CN
202.120.217.189	AS4538 China Education and Research Network Center	2.28ms from Shanghai, CN
202.120.209.97	AS4538 China Education and Research Network Center	1.92ms from Shanghai, CN
202.120.214.117	AS4538 China Education and Research Network Center	2.25ms from Shanghai, CN
202.120.220.1	AS4538 China Education and Research Network Center	4.18ms 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
32.221.81.116	AS46690 Southern New England Telephone Company and SNET America, Inc.	4.68ms from Secaucus, US
73.196.247.164	AS7922 Comcast Cable Communications, LLC	11.39ms from Secaucus, US
95.117.85.228	AS6805 Telefonica Germany GmbH & Co.OHG	9.62ms from Frankfurt am Main, DE
13.66.140.196	AS8075 Microsoft Corporation	0.17ms from Quincy, US
8.135.78.164	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	3.12ms from Shenzhen, CN
202.126.0.52	AS3561 CenturyLink Communications, LLC	1.37ms from Singapore, SG
36.230.8.116	AS3462 Data Communication Business Group	1.34ms from Taipei, TW
188.166.76.180	AS14061 DigitalOcean, LLC	0.23ms from Amsterdam, NL
183.147.237.228	AS4134 CHINANET-BACKBONE	8.97ms from Nanchang, CN
97.139.139.180	AS6167 Verizon Business	8.59ms from Denver, US
195.77.85.68	AS3352 TELEFONICA DE ESPANA S.A.U.	1.09ms from Madrid, ES
112.173.231.164	AS4766 Korea Telecom	4.27ms from Seoul, KR
185.152.34.84	AS61292 Blix Group AS	0.41ms from Singapore, SG
184.85.144.52	AS16625 Akamai Technologies, Inc.	0.42ms from Helsinki, FI
58.188.140.84	AS17511 OPTAGE Inc.	3.30ms from Osaka, JP
186.98.236.100	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	13.91ms from Panama, PA
104.0.57.164	AS7018 AT&T Enterprises, LLC	16.89ms from Chicago, US
207.161.235.52	AS7122 Bell Canada	16.09ms from Chicago, US
103.205.105.212	AS63732 GALAXY PLAY JOINT STOCK COMPANY	0.72ms from Ho Chi Minh City, VN
149.88.167.116	AS197537 WISDOM CLOUD INTERNET TECHNOLOGY PTE. LTD.	0.83ms from Paris, FR
116.38.147.164	AS17858 LG POWERCOMM	1.60ms from Seoul, KR
154.3.145.228	AS174 Cogent Communications	0.59ms from Toronto, CA
5.22.184.244	AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o.	0.73ms from Belgrade, RS
91.100.97.132	AS15516 DKTV A/S	1.74ms from Copenhagen, DK
43.198.190.164	AS16509 Amazon.com, Inc.	0.12ms from Hong Kong, HK

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 202.120.208.0/20

Range	ASN	Company	Num of IPs
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

BGP prefixes that are contained by 202.120.208.0/20

Range	ASN	Company	Num of IPs
202.120.215.0/24	AS4538	China Education and Research Network	256
202.120.209.0/24	AS4538	China Education and Research Network	256

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
202.120.160.0/20	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
202.120.209.0/24	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 2 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

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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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