42.244.0.0/16

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:  2025-11-18T00:26:28Z
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 42.0.0.0/8

Range	ASN	Company	Num of IPs
42.16.0.0/12	AS9644	SK Telecom	1,048,576
42.32.0.0/12	AS9644	SK Telecom	1,048,576
42.224.0.0/12	AS4837	China Unicom Henan province network	1,048,576
42.176.0.0/13	AS4837	UNICOM Liaoning Province Network	524,288
42.112.0.0/13	AS18403	FPT Telecom Company	524,288
42.144.0.0/13	AS9824	JCOM Co., Ltd.	524,288
42.84.0.0/14	AS4837	UNICOM Liaoning Province Network	262,144
42.56.0.0/14	AS4837	UNICOM Liaoning Province Network	262,144
42.188.0.0/14	AS4788	TM TECHNOLOGY SERVICES SDN. BHD.	262,144
42.4.0.0/14	AS4837	UNICOM Liaoning Province Network	262,144
42.52.0.0/14	AS4837	UNICOM Liaoning Province Network	262,144
42.84.0.0/14	AS9929	UNICOM Liaoning Province Network	262,144
42.48.0.0/15	AS4837	China Unicom HuNan province network	131,072
42.242.0.0/15	AS134766	CHINANET YunNan PROVINCE NETWORK	131,072
42.202.0.0/15	AS4134	CHINANET Liaoning province network	131,072
42.2.0.0/15	AS4760	PCCW Limited	131,072
42.202.0.0/15	AS137688	CHINANET Liaoning province network	131,072
42.80.0.0/15	AS17638	CHINANET TIANJIN PROVINCE NETWORK	131,072
42.242.0.0/15	AS4134	CHINANET YunNan PROVINCE NETWORK	131,072
42.80.0.0/15	AS58542	CHINANET TIANJIN PROVINCE NETWORK	131,072
42.202.0.0/15	AS134762	CHINANET Liaoning province network	131,072
42.192.0.0/15	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	131,072
42.2.0.0/16	AS4760	Hong Kong Telecommunications (HKT) Limited Mass Internet	65,536
42.98.0.0/16	AS4760	PCCW Limited	65,536
42.122.0.0/16	AS17638	CHINANET TIANJIN PROVINCE NETWORK	65,536
42.82.0.0/16	AS9698	LG HelloVision Corp.	65,536
42.159.0.0/16	AS58593	Shanghai Blue Cloud Technology Co.,Ltd	65,536
42.3.0.0/16	AS4760	Hong Kong Telecommunications (HKT) Limited Mass Internet	65,536
42.97.0.0/16	AS4134	CHINANET Jilin province network	65,536
42.82.0.0/16	AS38669	LG HelloVision Corp.	65,536
42.82.0.0/16	AS9697	LG HelloVision Corp.	65,536
42.82.0.0/16	AS38091	LG HelloVision Corp.	65,536
42.3.0.0/16	AS4515	Hong Kong Telecommunications (HKT) Limited Mass Internet	65,536
42.63.0.0/16	AS4837	China Unicom Ningxia Province Network	65,536
42.158.0.0/16	AS23724	21ViaNet(China),Inc.	65,536
42.200.0.0/16	AS4515	PCCW IMS Ltd (PCCW Business Internet Access)	65,536
42.82.0.0/16	AS9845	LG HelloVision Corp.	65,536
42.82.0.0/16	AS9770	LG HelloVision Corp.	65,536
42.156.128.0/17	AS37963	Aliyun Computing Co., LTD	32,768
42.96.128.0/17	AS37963	Aliyun Computing Co., LTD	32,768
42.120.128.0/17	AS37963	Zhejiang Taobao Network Co.,Ltd	32,768
42.0.128.0/17	AS17789	LocalArea Communication of LangFang LTD. CO.	32,768
42.187.128.0/17	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	32,768
42.0.128.0/17	AS138449	LocalArea Communication of LangFang LTD. CO.	32,768
42.51.0.0/17	AS56005	Henan Telcom Union Technology Co., LTD	32,768
42.51.128.0/17	AS56005	Henan Telcom Union Technology Co., LTD	32,768
42.194.128.0/17	AS45090	Tencent cloud computing (Beijing) Co., Ltd.	32,768
42.99.128.0/17	AS4637	Telstra Global Internet Services Network Blocks	32,768
42.83.0.0/18	AS18135	BTV CO., LTD.	16,384
42.99.0.0/18	AS139767	CHINANET Guangdong province network	16,384

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
42.244.42.196	AS4538 China Education and Research Network Center	`50.21ms` from Lanzhou, CN
42.244.7.57	AS4538 China Education and Research Network Center	`11.42ms` from Shanghai, CN
42.244.12.67	AS4538 China Education and Research Network Center	`12.05ms` from Shanghai, CN
42.244.8.211	AS4538 China Education and Research Network Center	`10.20ms` from Shanghai, CN
42.244.43.138	AS4538 China Education and Research Network Center	`10.78ms` from Shanghai, 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
139.217.115.96	AS58593 Shanghai Blue Cloud Technology Co.,Ltd	`3.12ms` from Beijing, CN
93.204.247.208	AS3320 Deutsche Telekom AG	`3.88ms` from Duesseldorf, DE
109.223.206.64	AS3215 Orange S.A.	`10.61ms` from Frankfurt am Main, DE
151.31.244.176	AS1267 WIND TRE S.P.A.	`9.28ms` from Frosinone, IT
113.239.20.240	AS4837 CHINA UNICOM China169 Backbone	`8.07ms` from Liaoyang, CN
104.252.32.144	AS61317 Hivelocity LLC	`0.51ms` from London, GB
76.7.221.128	AS22561 CenturyLink Communications, LLC	`13.80ms` from Minneapolis, US
112.69.209.192	AS17511 OPTAGE Inc.	`1.63ms` from Osaka, JP
185.60.26.96	AS34949 IDLINE SAS	`8.57ms` from Paris, FR
79.15.3.0	AS3269 Telecom Italia S.p.A.	`9.24ms` from Rome, IT
95.78.181.208	AS41661 JSC "ER-Telecom Holding"	`12.70ms` from Samara, RU
39.28.224.96	AS4766 Korea Telecom	`7.46ms` from Seoul, KR
52.192.178.160	AS16509 Amazon.com, Inc.	`0.23ms` from Tokyo, JP
34.145.178.240	AS396982 Google LLC	`0.14ms` from Ashburn, US
77.177.32.176	AS6805 Telefonica Germany GmbH & Co.OHG	`3.87ms` from Duesseldorf, DE
187.19.192.144	AS28126 BRISANET SERVICOS DE TELECOMUNICACOES S.A	`0.70ms` from Fortaleza, BR
8.209.113.192	AS45102 Alibaba (US) Technology Co., Ltd.	`0.75ms` from Frankfurt am Main, DE
103.194.104.16	AS138995 Antbox Networks Limited	`1.65ms` from Hong Kong, HK
166.122.2.112	AS6360 University of Hawaii	`1.68ms` from Honolulu, US
212.11.207.192	AS29256 STE PDN Internal AS	`12.47ms` from Larnaca, CY
172.90.134.176	AS20001 Charter Communications Inc	`5.84ms` from Los Angeles, US
97.102.75.48	AS33363 Charter Communications, Inc	`10.85ms` from Orlando, US
80.236.39.112	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`8.84ms` from Paris, FR
38.46.19.144	AS395719 Emerald Broadband, LLC	`4.16ms` from Portland, US
180.65.20.32	AS9318 SK Broadband Co Ltd	`2.09ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -m7 42.244.106.123

traceroute to 42.244.106.123 (42.244.106.123): 7 hops max, 52 byte packets

1 [AS140627] 103.112.0.1 0.192 ms

2 [AS140627] 103.151.64.207 43.126 ms

3 [] 123.255.91.118 63.375 ms

4 [AS4538] 101.4.114.181 98.63 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Agana Heights Village, GU

On November 14th 2025

What are IP address ranges?

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