219.242.50.0/24

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	219.242.0.0/15
Registry	APNIC
ID	CERNET-CN

WHOIS Details

inetnum:        219.242.0.0 - 219.243.255.255
netname:        CERNET-CN
descr:          China Education and Research Network
descr:          Beijing 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:  2020-10-20T00:56:47Z
source:         APNIC

irt:            IRT-CERNET-AP
address:        Network Center,
address:        FIT-3-220, 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:        abuse@cernet.edu.cn was validated on 2026-03-05
mnt-by:         MAINT-CERNET-AP
last-modified:  2026-03-05T06:39:56Z
source:         APNIC

role:           ABUSE CERNETAP
country:        ZZ
address:        Network Center,
address:        FIT-3-220, 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 2026-03-05
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-05T06:40:20Z
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 219.242.50.0/24

Range	ASN	Company	Num of IPs
219.242.0.0/15	AS4538	China Education and Research Network	131,072

Nearby Ranges

BGP prefixes that overlap with 219.242.0.0/16

Range	ASN	Company	Num of IPs
219.242.0.0/15	AS4538	China Education and Research Network	131,072

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

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
189.34.42.40	AS28573 Claro NXT Telecomunicacoes Ltda	`13.79ms` from Curitiba, BR
172.168.45.120	AS8075 Microsoft Corporation	`0.23ms` from Des Moines, US
120.83.224.88	AS17816 China Unicom IP network China169 Guangdong province	`5.16ms` from Guangzhou, CN
36.62.116.136	AS4134 CHINANET BACKBONE	`7.69ms` from Huainan, CN
123.215.58.184	AS9318 SK Broadband Co Ltd	`2.31ms` from Incheon, KR
18.134.238.200	AS16509 Amazon.com, Inc.	`0.18ms` from London, GB
86.148.50.136	AS2856 British Telecommunications PLC	`4.79ms` from London, GB
198.57.228.152	AS46606 Unified Layer	`2.00ms` from Salt Lake City, US
104.241.32.8	AS62887 WhiteSky Communications, LLC.	`0.45ms` from San Jose, US
202.68.229.136	AS152205 imobi inc,	`3.86ms` from Seoul, KR
47.115.183.200	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.51ms` from Shenzhen, CN
168.62.184.216	AS8075 Microsoft Corporation	`0.42ms` from Ashburn, US
97.180.25.8	AS6167 Verizon Business	`15.26ms` from Atlanta, US
172.169.219.40	AS8075 Microsoft Corporation	`0.22ms` from Des Moines, US
121.146.83.200	AS4766 Korea Telecom	`9.08ms` from Incheon, KR
188.232.124.136	AS41843 JSC ER-Telecom Holding	`8.91ms` from Novosibirsk, RU
107.146.126.216	AS33363 Charter Communications, Inc	`7.77ms` from Orlando, US
98.84.41.152	AS14618 Amazon.com, Inc.	`0.35ms` from Reston, US
82.102.25.56	AS9009 M247 Europe SRL	`0.12ms` from Singapore, SG
13.48.208.56	AS16509 Amazon.com, Inc.	`0.95ms` from Stockholm, SE
60.150.37.8	AS17676 SoftBank Corp.	`3.62ms` from Tokyo, JP
86.94.241.184	AS1136 KPN B.V.	`1.19ms` from Amsterdam, NL
69.251.216.104	AS7922 Comcast Cable Communications, LLC	`5.04ms` from Ashburn, US
75.53.188.104	AS7018 AT&T Enterprises, LLC	`14.37ms` from Atlanta, US
100.20.197.88	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f3 -m13 219.242.50.243

traceroute to 219.242.50.243 (219.242.50.243): 13 hops max, 52 byte packets

3 [] 123.255.91.118 4.914 ms

4 *

5 *

6 *

7 [AS4538] 101.4.112.98 48.925 ms

8 [AS4538] 101.4.113.229 37.788 ms

9 [AS4538] 202.112.38.94 36.579 ms

10 [AS4538] 202.112.42.62 36.846 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On April 25th 2026

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