219.243.24.0/22

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 219.243.24.0/22

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 219.243.0.0/16

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

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
219.243.24.29	boustead.edu.cn	1
219.243.24.9	boustead-college.com	1

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

Read more

Pingable IPs

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

IP Address	ASN	Details
219.243.27.243	AS4538 China Education and Research Network Center	`5.21ms` from Beijing, CN
219.243.24.1	AS4538 China Education and Research Network Center	`4.48ms` from Beijing, CN
219.243.26.129	AS4538 China Education and Research Network Center	`5.96ms` from Beijing, 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
132.220.239.102	AS8075 Microsoft Corporation	`0.27ms` from Amsterdam, NL
50.251.122.150	AS7922 Comcast Cable Communications, LLC	`7.25ms` from Ashburn, US
149.56.103.150	AS16276 OVH SAS	`0.14ms` from Beauharnois, CA
84.0.60.214	AS5483 Magyar Telekom Plc.	`7.03ms` from Budapest, HU
62.251.253.22	AS6713 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`2.53ms` from Casablanca, MA
75.181.111.86	AS11426 Charter Communications Inc	`16.28ms` from Charlotte, US
73.74.20.166	AS7922 Comcast Cable Communications, LLC	`5.69ms` from Chicago, US
75.151.17.230	AS7922 Comcast Cable Communications, LLC	`8.29ms` from Flint, US
93.228.189.38	AS3320 Deutsche Telekom AG	`1.64ms` from Hamburg, DE
119.64.112.38	AS17858 LG POWERCOMM	`1.83ms` from Incheon, KR
5.71.88.54	AS5607 Sky UK Limited	`7.11ms` from London, GB
86.248.110.54	AS3215 Orange S.A.	`1.32ms` from Lyon, FR
83.40.200.150	AS3352 TELEFONICA DE ESPANA S.A.U.	`9.17ms` from Madrid, ES
120.72.28.38	AS38553 DC Tech Micro Services Inc.	`17.68ms` from Manila, PH
110.145.59.134	AS1221 Telstra Limited	`2.10ms` from Melbourne, AU
151.83.205.134	AS1267 WIND TRE S.P.A.	`5.37ms` from Milan, IT
174.93.161.70	AS577 Bell Canada	`1.51ms` from Montreal, CA
126.62.231.134	AS17676 SoftBank Corp.	`12.03ms` from Osaka, JP
94.143.85.6	AS8368 Dstny BE N.V.	`1.15ms` from Paris, FR
167.10.239.102	AS46520 California Department of Justice	`2.65ms` from San Jose, US
200.76.108.134	AS16531 TOPNET SA de CV	`4.53ms` from Santiago de Querétaro, MX
187.123.161.182	AS28573 Claro NXT Telecomunicacoes Ltda	`7.52ms` from Sao Paulo, BR
118.241.101.198	AS2527 Sony Network Communications Inc.	`2.07ms` from Tokyo, JP
70.51.55.182	AS577 Bell Canada	`0.73ms` from Toronto, CA
207.245.201.230	AS6461 Zayo Bandwidth	`0.39ms` from Toronto, CA

Traceroute

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

traceroute -a -n -q1 -f6 219.243.24.5

traceroute to 219.243.24.5 (219.243.24.5): 64 hops max, 52 byte packets

6 [AS137699] 121.226.193.78 2.394 ms

7 [AS137699] 121.226.193.77 0.73 ms

8 [AS137699] 121.226.193.17 15.187 ms

9 *

10 [AS4134] 202.97.75.26 25.057 ms

11 *

12 *

13 [AS4538] 101.4.112.70 27.569 ms

14 *

15 [AS4538] 202.127.216.97 28.213 ms

16 *

17 [AS4538] 59.67.181.14 27.678 ms

18 *

19 [AS4538] 219.243.24.5 27.518 ms

Measurement taken from

IPinfo ProbeNet in Suqian, CN

On March 20th 2026

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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