121.195.112.0/23

AS4538 · China Education and Research Network Center

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Summary

Country	China
Domain	cernet.edu.cn
ASN	AS4538
Parent Range	121.194.0.0/15
Registry	APNIC
ID	BJR-CERNET

WHOIS Details

inetnum:        121.194.0.0 - 121.195.255.255
netname:        BJR-CERNET
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:  2020-09-03T09:16:22Z
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:         [email protected]
abuse-mailbox:  [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
auth:           # Filtered
remarks:        timezone GMT+8
remarks:        http://www.ccert.edu.cn
remarks:        [email protected] 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:         [email protected]
admin-c:        CER-AP
tech-c:         CER-AP
nic-hdl:        AC1685-AP
remarks:        Generated from irt object IRT-CERNET-AP
remarks:        [email protected] was validated on 2025-08-15
abuse-mailbox:  [email protected]
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:         [email protected]
remarks:        [email protected]
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:          121.195.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-01-05T03:10:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 121.195.112.0/23

Range	ASN	Company	Num of IPs
121.194.0.0/15	AS4538	China Education and Research Network	131,072

Nearby Ranges

BGP prefixes that overlap with 121.195.0.0/16

Range	ASN	Company	Num of IPs
121.194.0.0/15	AS4538	China Education and Research Network	131,072

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

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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
194.67.80.55	AS212189 IT-GRAD TOO	`0.42ms` from Almaty, KZ
50.112.197.87	AS16509 Amazon.com, Inc.	`0.11ms` from Boardman, US
200.118.253.135	AS10620 Telmex Colombia S.A.	`9.00ms` from Bogota, CO
3.174.142.87	AS16509 Amazon.com, Inc.	`0.37ms` from London, GB
130.91.193.87	AS55 University of Pennsylvania	`3.54ms` from New York City, US
115.201.151.119	AS4134 CHINANET-BACKBONE	`5.20ms` from Ningbo, CN
72.217.1.231	AS22773 Cox Communications Inc.	`5.46ms` from Phoenix, US
97.117.131.151	AS209 CenturyLink Communications, LLC	`2.31ms` from Salt Lake City, US
79.119.126.247	AS8708 DIGI ROMANIA S.A.	`1.75ms` from Timisoara, RO
173.247.139.7	AS40788 Start Communications	`9.03ms` from Toronto, CA
92.178.125.71	AS12479 Orange Espagne SA	`5.71ms` from Zaragoza, ES
67.130.32.7	AS19216 Revlon Consumer Products Corp.	`9.31ms` from Ashburn, US
94.67.203.167	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`9.22ms` from Athens, GR
3.32.127.39	AS8987 Amazon Data Services Ireland Ltd	`0.30ms` from Boardman, US
156.204.102.199	AS8452 TE-AS	`6.05ms` from Cairo, EG
201.252.61.247	AS7303 Telecom Argentina S.A.	`1.23ms` from Cordoba, AR
70.40.18.183	AS18859 GVEC.net, LLC	`7.76ms` from Dallas, US
217.94.58.247	AS3320 Deutsche Telekom AG	`2.94ms` from Hamburg, DE
113.183.206.119	AS45899 VNPT Corp	`2.58ms` from Ho Chi Minh City, VN
39.38.76.103	AS17557 Pakistan Telecommunication Company Limited	`10.02ms` from Karachi, PK
37.10.191.103	AS3352 TELEFONICA DE ESPANA S.A.U.	`19.33ms` from Madrid, ES
182.239.175.135	AS7545 TPG Telecom Limited	`2.28ms` from Melbourne, AU
96.58.146.151	AS33363 Charter Communications, Inc	`10.97ms` from Orlando, US
190.34.47.55	AS11556 Cable & Wireless Panama	`1.07ms` from Panama, PA
120.197.97.7	AS56040 China Mobile communications corporation	`0.94ms` from Shenzhen, CN

Traceroute

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

traceroute -a -n -q1 -m17 121.195.113.170

traceroute to 121.195.113.170 (121.195.113.170): 17 hops max, 52 byte packets

1 [AS2901] 198.59.104.2 0.318 ms

2 [AS2901] 198.59.96.134 0.267 ms

3 [AS2901] 198.59.96.128 0.233 ms

4 *

5 *

6 *

7 *

8 [AS6939] 184.104.188.98 124.433 ms

9 *

10 [] 123.255.91.118 174.26 ms

11 [AS4538] 101.4.114.181 200.487 ms

12 *

13 *

14 [AS4538] 101.4.113.201 201.017 ms

15 *

16 *

17 *

Measurement taken from

IPinfo ProbeNet in Albuquerque, US

On December 6th 2025

What are IP address ranges?

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