121.192.192.0/18

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	121.192.0.0/16
Registry	APNIC
ID	SHR-CERNET

WHOIS Details

inetnum:        121.192.0.0 - 121.192.255.255
netname:        SHR-CERNET
descr:          China Education and Research Network
descr:          Shanghai 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:  2020-09-03T09:16:25Z
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:          121.192.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-01-05T03:10:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 121.192.192.0/18

Range	ASN	Company	Num of IPs
121.192.0.0/16	AS4538	China Education and Research Network	65,536

Nearby Ranges

BGP prefixes that overlap with 121.192.0.0/16

Range	ASN	Company	Num of IPs
121.192.0.0/16	AS4538	China Education and Research Network	65,536

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
20.101.124.18	AS8075 Microsoft Corporation	`0.27ms` from Amsterdam, NL
207.227.253.66	AS3356 Level 3 Parent, LLC	`0.86ms` from Ashburn, US
49.48.62.34	AS45758 Triple T Broadband Public Company Limited	`4.01ms` from Bangkok, TH
84.2.148.114	AS5483 Magyar Telekom Plc.	`1.06ms` from Budapest, HU
41.44.100.178	AS8452 TE-AS	`2.73ms` from Cairo, EG
99.88.248.178	AS7018 AT&T Enterprises, LLC	`13.69ms` from Chicago, US
84.132.32.130	AS3320 Deutsche Telekom AG	`5.25ms` from Frankfurt am Main, DE
148.66.7.82	AS45753 Netsec Limited	`0.55ms` from Hong Kong, HK
84.45.117.2	AS25577 BE DC Connect UK Limited	`0.56ms` from London, GB
43.240.63.162	AS59009 QingDao WangXin Telcom Corp. Limited	`1.41ms` from Qingdao, CN
4.229.33.162	AS8075 Microsoft Corporation	`0.17ms` from Quebec, CA
31.195.7.210	AS3269 Telecom Italia S.p.A.	`1.36ms` from Rome, IT
180.157.67.34	AS4812 China Telecom (Group)	`4.39ms` from Shanghai, CN
1.162.199.226	AS3462 Data Communication Business Group	`4.69ms` from Taipei, TW
59.84.17.98	AS10010 TOKAI Communications Corporation	`0.57ms` from Tokyo, JP
123.6.173.146	AS4837 CHINA UNICOM China169 Backbone	`1.10ms` from Zhengzhou, CN
38.81.88.66	AS31919 Blue Ridge Mountain Electric Membership Corporation - BRM EMC	`4.13ms` from Atlanta, US
35.164.213.226	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
96.94.164.114	AS7922 Comcast Cable Communications, LLC	`12.82ms` from Chicago, US
5.186.232.50	AS44869 FIBIA P/S	`3.09ms` from Copenhagen, DK
85.134.156.98	AS25441 Imagine Communications Group Limited	`2.66ms` from Dublin, IE
14.183.43.98	AS45899 VNPT Corp	`4.41ms` from Ho Chi Minh City, VN
1.229.157.66	AS9318 SK Broadband Co Ltd	`1.70ms` from Incheon, KR
212.90.184.82	AS12593 LLC "UKRCOM"	`0.50ms` from Kyiv, UA
83.55.124.66	AS3352 TELEFONICA DE ESPANA S.A.U.	`6.49ms` from Madrid, ES

Traceroute

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

traceroute -a -n -q1 -f5 -m19 121.192.212.88

traceroute to 121.192.212.88 (121.192.212.88): 19 hops max, 52 byte packets

5 [AS4134] 219.149.114.117 2.948 ms

6 *

7 *

8 *

9 *

10 [AS4134] 202.97.17.42 51.825 ms

11 [AS4538] 101.4.118.114 41.413 ms

12 [AS4538] 101.4.118.250 51.162 ms

13 [AS4538] 101.4.117.46 45.589 ms

14 [AS4538] 101.4.117.41 68.007 ms

15 *

16 [AS4538] 101.4.115.90 68.604 ms

17 *

18 *

19 *

Measurement taken from

IPinfo ProbeNet in Liaoyang, CN

On January 19th 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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