219.231.32.0/20

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	219.224.0.0/13
Registry	APNIC
ID	CERNET-CN

WHOIS Details

inetnum:        219.230.0.0 - 219.231.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          Nanjing 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:  2020-09-03T09:16:27Z
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 219.231.32.0/20

Range	ASN	Company	Num of IPs
219.224.0.0/13	AS4538	China Education and Research Network	524,288

BGP prefixes that are contained by 219.231.32.0/20

Range	ASN	Company	Num of IPs
219.231.35.0/24	AS4538	China Education and Research Network	256

Nearby Ranges

BGP prefixes that overlap with 219.231.0.0/16

Range	ASN	Company	Num of IPs
219.224.0.0/13	AS4538	China Education and Research Network	524,288
219.231.128.0/20	AS4538	China Education and Research Network	4,096
219.231.192.0/20	AS4538	China Education and Research Network	4,096
219.231.176.0/20	AS4538	China Education and Research Network	4,096
219.231.144.0/20	AS4538	China Education and Research Network	4,096
219.231.160.0/20	AS4538	China Education and Research Network	4,096
219.231.0.0/20	AS4538	China Education and Research Network	4,096
219.231.56.0/21	AS4538	China Education and Research Network	2,048
219.231.208.0/21	AS4538	China Education and Research Network	2,048
219.231.16.0/21	AS4538	China Education and Research Network	2,048
219.231.216.0/21	AS4538	China Education and Research Network	2,048
219.231.48.0/21	AS4538	China Education and Research Network	2,048
219.231.240.0/21	AS4538	China Education and Research Network	2,048
219.231.24.0/23	AS4538	China Education and Research Network	512
219.231.35.0/24	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

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

IP Address	ASN	Details
219.231.45.19	AS4538 China Education and Research Network Center	12.31ms 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
108.143.142.4	AS8075 Microsoft Corporation	0.28ms from Amsterdam, NL
44.236.52.20	AS16509 Amazon.com, Inc.	0.17ms from Boardman, US
73.102.179.68	AS7922 Comcast Cable Communications, LLC	12.79ms from Chicago, US
87.245.51.164	AS9145 EWE TEL GmbH	4.37ms from Hamburg, DE
37.69.71.180	AS15557 Societe Francaise Du Radiotelephone - SFR SA	16.11ms from Paris, FR
137.82.18.180	AS393249 University of British Columbia	4.77ms from Seattle, US
125.187.117.148	AS17858 LG POWERCOMM	1.88ms from Seoul, KR
88.156.34.4	AS29314 VECTRA S.A.	14.67ms from Warsaw, PL
111.62.129.100	AS24547 Hebei Mobile Communication Company Limited	5.21ms from Beijing, CN
204.11.212.100	AS36536 Enterhost	1.62ms from Dallas, US
57.132.137.196	AS7459 Grande Communications Networks, LLC	6.64ms from Dallas, US
86.153.116.52	AS2856 British Telecommunications PLC	3.08ms from London, GB
189.76.245.52	AS262407 RAPIDANET TELECOM LTDA	16.55ms from Osasco, BR
211.49.248.4	AS9318 SK Broadband Co Ltd	6.77ms from Seoul, KR
78.77.188.84	AS3301 Telia Company AB	0.62ms from Stockholm, SE
186.67.133.196	AS27651 ENTEL CHILE S.A.	0.83ms from Santiago, CL
189.95.185.228	AS22085 Claro S/A	15.93ms from Sao Paulo, BR
120.116.36.20	AS1659 Taiwan Academic Network (TANet) Information Center	5.29ms from Taichung, TW
62.128.122.100	AS3327 CITIC Telecom CPC Netherlands B.V.	0.40ms from Tallinn, EE
125.69.130.68	AS4134 CHINANET-BACKBONE	3.02ms from Chengdu, CN
34.72.91.100	AS396982 Google LLC	0.12ms from Council Bluffs, US
79.188.220.180	AS5617 Orange Polska Spolka Akcyjna	2.87ms from Poznan, PL
93.48.80.36	AS12874 Fastweb SpA	8.22ms from Rende, IT
220.87.31.244	AS4766 Korea Telecom	1.07ms from Seoul, KR
178.47.127.180	AS12389 PJSC Rostelecom	17.45ms from Yekaterinburg, RU

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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