219.242.0.0/15

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
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

Nearby Ranges

BGP prefixes that overlap with 219.0.0.0/8

Range ASN Company Num of IPs
219.32.0.0/11 AS17676 Japan nation-wide Network of SOFTBANK Corp. 2,097,152
219.16.0.0/12 AS17676 Japan nation-wide Network of SOFTBANK Corp. 1,048,576
219.244.0.0/14 AS4538 China Education and Research Network 262,144
219.248.0.0/14 AS9318 SK Broadband Co Ltd 262,144
219.86.0.0/15 AS9924 Taiwan Fixed Network CO.,LTD. 131,072
219.80.0.0/15 AS9924 Taiwan Fixed Network CO.,LTD. 131,072
219.66.0.0/15 AS4725 SoftBank Corp. 131,072
219.86.0.0/15 AS3911 Taiwan Fixed Network CO.,LTD. 131,072
219.240.0.0/15 AS9318 SK Broadband Co Ltd 131,072
219.254.0.0/15 AS9318 SK Broadband Co Ltd 131,072
219.70.0.0/15 AS9416 Hoshin Multimedia Center Inc 131,072
219.119.0.0/16 AS2497 Internet Initiative Japan Inc. 65,536
219.237.0.0/16 AS17429 BEIJING SANXIN SHIDAI CO., LTD. 65,536
219.252.0.0/16 AS18302 SK Broadband Co Ltd 65,536
219.102.0.0/16 AS2514 NTT PC Communications,Inc. 65,536
219.120.0.0/16 AS17506 ARTERIA Networks Corporation 65,536
219.77.0.0/16 AS4760 Hong Kong Telecommunications (HKT) Limited Mass Internet 65,536
219.140.0.0/16 AS137266 Chinanet network in Wuhan city Hubei province 65,536
219.95.0.0/16 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 65,536
219.82.0.0/16 AS24139 Huashu media&Network Limited 65,536
219.253.0.0/16 AS18302 SK Broadband Co Ltd 65,536
219.123.0.0/16 AS17506 ARTERIA Networks Corporation 65,536
219.79.0.0/16 AS4760 Hong Kong Telecommunications (HKT) Limited Mass Internet 65,536
219.72.0.0/16 AS18118 CITIC Networks Management Co.,Ltd. 65,536
219.125.0.0/16 AS2516 KDDI CORPORATION 65,536
219.108.0.0/16 AS2516 KDDI CORPORATION 65,536
219.78.0.0/16 AS4760 Hong Kong Telecommunications (HKT) Limited Mass Internet 65,536
219.110.0.0/16 AS9365 its communications Inc. 65,536
219.220.0.0/16 AS4538 China Education and Research Network 65,536
219.227.0.0/16 AS4538 China Education and Research Network 65,536
219.92.0.0/16 AS4788 TMNET 65,536
219.140.0.0/16 AS4134 Chinanet network in Wuhan city Hubei province 65,536
219.98.0.0/16 AS2527 Sony Network Communications Inc. 65,536
219.233.0.0/16 AS9812 Oriental Cable Network Co., Ltd. 65,536
219.107.0.0/16 AS2518 BIGLOBE Inc. 65,536
219.253.0.0/16 AS9318 SK Broadband Co Ltd 65,536
219.252.0.0/16 AS9318 SK Broadband Co Ltd 65,536
219.147.128.0/17 AS4134 CHINANET HEILONGJIANG PROVINCE NETWORK 32,768
219.96.128.0/17 AS4713 NTT DOCOMO BUSINESS,Inc. 32,768
219.142.0.0/17 AS4847 Beijing Kuanjie Net communication technology Ltd 32,768
219.141.0.0/17 AS4134 CHINANET Guizhou province network 32,768
219.158.128.0/17 AS4808 China Unicom Beijing province network 32,768
219.114.0.0/17 AS4713 NTT DOCOMO BUSINESS,Inc. 32,768
219.95.128.0/17 AS4788 TMNET 32,768
219.91.0.0/17 AS131627 Asia Pacific On-line Services Inc. 32,768
219.90.128.0/17 AS4739 iiNet Limited 32,768
219.126.0.0/17 AS10010 TOKAI Communications Corporation 32,768
219.111.0.0/17 AS2497 Internet Initiative Japan Inc. 32,768
219.94.0.0/17 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 32,768

Hosted domains

There are 14 domain names hosted across 13 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
219.243.31.65 lsjhxgs.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

Pingable IPs

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

IP Address ASN Details
219.243.21.1 AS4538 China Education and Research Network Center 5.39ms from Beijing, CN
219.243.230.161 AS4538 China Education and Research Network Center 31.62ms from Tianjin, CN
219.243.226.167 AS4538 China Education and Research Network Center 11.43ms from Zhengzhou, CN
219.243.208.193 AS4538 China Education and Research Network Center 1.78ms from Beijing, CN
219.242.224.5 AS4538 China Education and Research Network Center 2.53ms from Beijing, CN
219.243.255.167 AS4538 China Education and Research Network Center 20.62ms from Beijing, CN
219.243.217.51 AS4538 China Education and Research Network Center 11.26ms from Guangzhou, CN
219.243.71.245 AS4538 China Education and Research Network Center 22.26ms from Beijing, CN
219.242.247.219 AS4538 China Education and Research Network Center 3.28ms from Beijing, CN
219.243.239.161 AS4538 China Education and Research Network Center 2.00ms from Guangzhou, CN
219.243.247.167 AS4538 China Education and Research Network Center 8.69ms from Wuhan, CN
219.243.205.13 AS4538 China Education and Research Network Center 2.53ms from Beijing, CN
219.243.238.162 AS4538 China Education and Research Network Center 52.32ms from Beijing, CN
219.243.248.175 AS4538 China Education and Research Network Center 0.90ms from Qingdao, CN
219.243.242.162 AS4538 China Education and Research Network Center 2.28ms from Shenzhen, CN
219.243.206.166 AS4538 China Education and Research Network Center 8.55ms from Wuhan, CN
219.243.117.178 AS4538 China Education and Research Network Center 32.45ms from Beijing, CN
219.243.215.130 AS4538 China Education and Research Network Center 2.23ms from Beijing, CN
219.243.214.253 AS4538 China Education and Research Network Center 2.71ms from Beijing, CN
219.243.209.1 AS4538 China Education and Research Network Center 1.76ms from Beijing, CN
219.243.39.70 AS4538 China Education and Research Network Center 5.84ms from Beijing, CN
219.243.225.167 AS4538 China Education and Research Network Center 5.15ms from Beijing, CN
219.243.228.161 AS4538 China Education and Research Network Center 11.46ms from Beijing, CN
219.243.79.58 AS4538 China Education and Research Network Center 21.76ms from Beijing, CN
219.243.231.167 AS4538 China Education and Research Network Center 27.04ms 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
77.83.214.127 AS203020 HostRoyale Technologies Pvt Ltd 0.07ms from Bordeaux, FR
24.252.85.15 AS22773 Cox Communications Inc. 17.93ms from Dallas, US
117.208.133.223 AS9829 National Internet Backbone 10.63ms from Delhi, IN
117.6.127.31 AS7552 Viettel Group 1.37ms from Hanoi, VN
116.121.12.47 AS9318 SK Broadband Co Ltd 1.42ms from Incheon, KR
83.52.246.255 AS3352 TELEFONICA DE ESPANA S.A.U. 8.58ms from Madrid, ES
142.93.119.47 AS14061 DigitalOcean, LLC 0.23ms from New York City, US
23.60.7.111 AS16625 Akamai Technologies, Inc. 0.89ms from New York City, US
87.164.16.239 AS3320 Deutsche Telekom AG 2.14ms from Nuernberg, DE
109.239.157.191 AS39286 ASCANIO SASAU 5.79ms from Paris, FR
205.196.217.143 AS26347 New Dream Network, LLC 0.29ms from Portland, US
125.209.42.255 AS17597 SK Broadband Co Ltd 1.36ms from Seoul, KR
2.67.174.143 AS44034 Hi3G Access AB 7.07ms from Stockholm, SE
187.91.26.207 AS26599 TELEFÔNICA BRASIL S.A 15.70ms from São Paulo, BR
40.114.235.127 AS8075 Microsoft Corporation 0.22ms from Amsterdam, NL
108.56.158.239 AS701 Verizon Business 2.79ms from Ashburn, US
18.220.86.207 AS16509 Amazon.com, Inc. 0.18ms from Columbus, US
91.207.224.79 AS196638 JSC Promtelecom 17.31ms from Moscow, RU
60.139.146.191 AS17676 SoftBank Corp. 3.97ms from Osaka, JP
34.163.243.111 AS396982 Google LLC 0.13ms from Paris, FR
108.36.239.223 AS701 Verizon Business 1.60ms from Philadelphia, US
79.18.157.127 AS3269 Telecom Italia S.p.A. 5.22ms from Rome, IT
124.153.188.111 AS9694 Seokyung Cable Television Co.. Ltd. 7.99ms from Seoul, KR
203.250.121.207 AS9708 Pukyong National University 6.22ms from Seoul, KR
86.126.202.207 AS8708 DIGI ROMANIA S.A. 5.72ms from Timisoara, RO

Traceroute

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

$
traceroute -a -n -q1 -m14 219.243.144.29
traceroute to 219.243.144.29 (219.243.144.29): 14 hops max, 52 byte packets
1 [AS15169] 72.14.239.92 244.563 ms
2 [] 123.255.91.235 194.068 ms
3 *
4 [AS174] 38.150.75.1 201.001 ms
5 [AS4538] 101.4.114.181 223.461 ms
6 *
7 *
8 *
9 [AS4538] 101.4.114.122 227.218 ms
10 *
11 [AS4538] 202.112.38.186 237.65 ms
12 *
13 *
14 *
Measurement taken from IPinfo ProbeNet in Milan, IT
On

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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