219.230.48.0/20

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 219.230.48.0/20

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 219.230.48.0/20

Range	ASN	Company	Num of IPs
219.230.51.0/24	AS4538	China Education and Research Network	256

Nearby Ranges

BGP prefixes that overlap with 219.230.0.0/16

Range	ASN	Company	Num of IPs
219.224.0.0/13	AS4538	China Education and Research Network	524,288
219.230.64.0/18	AS4538	China Education and Research Network	16,384
219.230.192.0/18	AS4538	China Education and Research Network	16,384
219.230.128.0/19	AS4538	China Education and Research Network	8,192
219.230.160.0/19	AS4538	China Education and Research Network	8,192
219.230.32.0/20	AS4538	China Education and Research Network	4,096
219.230.176.0/20	AS4538	China Education and Research Network	4,096
219.230.144.0/20	AS4538	China Education and Research Network	4,096
219.230.144.0/20	AS24361	China Education and Research Network	4,096
219.230.16.0/20	AS4538	China Education and Research Network	4,096
219.230.51.0/24	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
176.232.45.4	AS34984 Superonline Iletisim Hizmetleri A.S.	8.34ms from Istanbul, TR
49.250.110.148	AS9617 JCOM Co., Ltd.	12.07ms from Osaka, JP
100.10.34.228	AS701 Verizon Business	2.84ms from Boston, US
84.238.86.164	AS33796 BOLIGNET-AARHUS F.M.B.A.	3.38ms from Copenhagen, DK
24.243.107.68	AS11427 Charter Communications Inc	13.65ms from Houston, US
187.212.11.52	AS8151 UNINET	6.55ms from Santiago de Queretaro, MX
54.188.21.84	AS16509 Amazon.com, Inc.	0.15ms from Boardman, US
100.42.124.36	AS46518 Cloud Provider USA, LLC.	0.34ms from Boston, US
187.204.67.4	AS8151 UNINET	7.97ms from Guadalajara, MX
108.146.71.132	AS20057 AT&T Enterprises, LLC	16.71ms from Houston, US
51.155.194.132	AS13037 Zen Internet Ltd	1.90ms from London, GB
206.221.218.132	AS7296 Dynascale Technologies, Inc.	0.29ms from Los Angeles, US
68.129.160.100	AS701 Verizon Business	2.53ms from New York City, US
121.212.113.196	AS1221 Telstra Limited	8.39ms from Sydney, AU
128.183.192.4	AS270 National Aeronautics and Space Administration	2.54ms from Ashburn, US
52.234.215.196	AS8075 Microsoft Corporation	0.44ms from Ashburn, US
91.172.183.196	AS12322 Free SAS	2.90ms from Paris, FR
188.66.93.100	AS31655 Gamma Telecom Holdings Ltd	2.59ms from Manchester, GB
20.189.176.212	AS8075 Microsoft Corporation	0.56ms from San Jose, US
125.12.185.100	AS9824 JCOM Co., Ltd.	11.61ms from Tokyo, JP
185.32.171.4	AS8368 BENESOL BACKBONE	0.41ms from Brussels, BE
219.153.33.132	AS134420 Chongqing Telecom	1.28ms from Chongqing, CN
80.170.29.68	AS1257 Tele2 Sverige AB	2.78ms from Copenhagen, DK
86.132.213.36	AS2856 British Telecommunications PLC	2.78ms from London, GB
98.3.86.100	AS11351 Charter Communications Inc	18.73ms from Morris Plains, US

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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