42.247.5.0/24

AS4538  ·  China Education and Research Network Center

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Summary

Country China
Domain cernet.edu.cn
ASN AS4538
Registry APNIC
ID NJR-CERNET

WHOIS Details

inetnum:        42.244.0.0 - 42.247.255.255
netname:        NJR-CERNET
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
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:28Z
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 2025-08-15
mnt-by:         MAINT-CERNET-AP
last-modified:  2025-09-04T00:59:41Z
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 2025-08-15
abuse-mailbox:  abuse@cernet.edu.cn
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-15T09:38:28Z
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

route:          42.246.0.0/15
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2017-03-14T04:00:08Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 42.247.0.0/16

Range ASN Company Num of IPs
42.247.1.0/24 AS4538 Chengdu, Sichuan 610054, China 256
42.247.18.0/24 AS4538 Shanghai 200030, China 256
42.247.30.0/24 AS4538 Shenyang, Liaoning 110004, China 256

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address ASN Details
42.247.5.127 AS4538 China Education and Research Network Center 6.00ms 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
5.197.19.232 AS57293 AG Telekom MMC. 1.73ms from Baku, AZ
44.232.234.8 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US
110.227.122.104 AS24560 Bharti Airtel Ltd., Telemedia Services 9.10ms from Delhi, IN
68.41.94.40 AS7922 Comcast Cable Communications, LLC 9.01ms from Flint, US
79.220.14.200 AS3320 Deutsche Telekom AG 5.88ms from Frankfurt am Main, DE
1.14.144.184 AS45090 Shenzhen Tencent Computer Systems Company Limited 2.02ms from Guangzhou, CN
192.194.9.8 AS1759 Telia Finland Oyj 5.13ms from Helsinki, FI
61.137.168.152 AS4837 CHINA UNICOM China169 Backbone 10.25ms from Liaoyang, CN
67.203.56.152 AS21769 Colocation America Corporation 0.19ms from Los Angeles, US
171.39.202.216 AS4837 CHINA UNICOM China169 Backbone 9.11ms from Nanning, CN
2.15.55.216 AS3215 Orange S.A. 14.32ms from Paris, FR
210.222.68.8 AS4766 Korea Telecom 3.02ms from Seoul, KR
122.112.239.200 AS55990 Huawei Cloud Service data center 2.18ms from Shanghai, CN
116.82.2.248 AS2527 Sony Network Communications Inc. 2.02ms from Tokyo, JP
37.26.198.152 AS34337 ELECTRONIC MECHANICAL COMPANY ELPOS SP Z O O 4.26ms from Warsaw, PL
18.165.189.56 AS16509 Amazon.com, Inc. 0.36ms from Zuerich, CH
114.244.110.200 AS4808 China Unicom Beijing Province Network 3.88ms from Beijing, CN
154.180.93.216 AS8452 TE-AS 6.54ms from Cairo, EG
38.239.173.168 AS134548 DXTL Tseung Kwan O Service 0.74ms from Hong Kong, HK
175.147.20.56 AS4837 CHINA UNICOM China169 Backbone 10.17ms from Liaoyang, CN
50.159.41.248 AS22773 Cox Communications Inc. 9.71ms from Los Angeles, US
185.235.140.8 AS211918 INFRONT ITALY S.P.A. 0.48ms from Milan, IT
120.243.119.136 AS9808 China Mobile Communications Group Co., Ltd. 6.75ms from Nanjing, CN
100.14.49.120 AS701 Verizon Business 1.65ms from Philadelphia, US
107.12.51.168 AS11426 Charter Communications Inc 14.44ms from Charlotte, US

Traceroute

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

$
traceroute -a -n -q1 -f4 42.247.5.209
traceroute to 42.247.5.209 (42.247.5.209): 64 hops max, 52 byte packets
4 [AS749] 11.94.145.130 16.161 ms
5 *
6 [AS4538] 101.4.131.17 6.471 ms
8 *
9 *
10 *
11 [AS4538] 42.247.5.209 10.243 ms
Measurement taken from IPinfo ProbeNet in Hangzhou, CN
On

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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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