42.247.22.0/24

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:          42.244.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2017-03-14T04:00:07Z
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

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

IP Address ASN Details
42.247.22.137 AS4538 China Education and Research Network Center 2.40ms from Shenzhen, 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
82.148.215.40 AS29396 Eurofiber UNET 6.89ms from Amsterdam, NL
71.246.241.232 AS701 Verizon Business 1.53ms from Ashburn, US
35.230.196.104 AS396982 Google LLC 0.23ms from Chang-hua, TW
71.65.249.200 AS11426 Charter Communications Inc 8.45ms from Charlotte, US
211.92.16.136 AS4837 CHINA UNICOM China169 Backbone 2.81ms from Chongqing, CN
184.57.11.8 AS10796 Charter Communications Inc 8.75ms from Columbus, US
39.50.148.8 AS17557 Pakistan Telecommunication Company Limited 12.48ms from Karachi, PK
139.138.35.168 AS16417 Cisco Systems Ironport Division 1.70ms from Las Vegas, US
139.213.210.168 AS4837 CHINA UNICOM China169 Backbone 16.50ms from Liaoyang, CN
78.146.58.168 AS13285 TalkTalk Communications Limited 3.92ms from London, GB
75.201.86.168 AS6167 Verizon Business 8.20ms from Miami, US
88.88.171.168 AS2119 Telenor Norge AS 6.74ms from Oslo, NO
78.108.177.72 AS62160 WEB3 Leaders INC 0.39ms from Prague, CZ
142.104.178.136 AS16462 University of Victoria 3.29ms from Seattle, US
129.69.90.232 AS553 BelWue-Koordination 3.24ms from Zuerich, CH
84.80.223.8 AS1136 KPN B.V. 1.84ms from Amsterdam, NL
104.60.169.232 AS7018 AT&T Enterprises, LLC 3.00ms from Atlanta, US
35.91.233.136 AS16509 Amazon.com, Inc. 0.15ms from Boardman, US
113.94.1.72 AS4134 CHINANET-BACKBONE 8.10ms from Guangzhou, CN
67.227.140.136 AS32244 Liquid Web, L.L.C 0.20ms from Lansing, US
60.20.243.232 AS4837 CHINA UNICOM China169 Backbone 8.04ms from Liaoyang, CN
86.147.202.40 AS2856 British Telecommunications PLC 2.76ms from London, GB
38.38.45.24 AS398823 PEG TECH INC 0.29ms from Los Angeles, US
27.49.39.40 AS17639 Converge ICT Solutions Inc. 0.63ms from Manila, PH
135.169.142.24 AS18676 Avaya LLC 12.37ms from Melbourne, AU

Traceroute

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

$
traceroute -a -n -q1 -f2 42.247.22.137
traceroute to 42.247.22.137 (42.247.22.137): 64 hops max, 52 byte packets
2 [AS749] 11.73.9.233 1.784 ms
3 *
4 [AS749] 11.94.171.245 3.124 ms
5 [] 117.49.37.242 3.537 ms
6 [AS4538] 101.4.131.129 4.351 ms
8 [AS4538] 101.4.116.6 5.138 ms
9 [AS4538] 42.247.22.137 2.412 ms
Measurement taken from IPinfo ProbeNet in Shenzhen, CN
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.

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