121.194.224.0/19

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:          121.194.0.0/16
descr:          CERNET
origin:         AS4538
mnt-by:         MAINT-CERNET-AP
last-modified:  2009-01-05T03:10:57Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 121.194.224.0/19

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 121.194.0.0/16

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

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
211.151.62.99 AS23724 IDC, China Telecommunications Corporation 3.72ms from Beijing, CN
91.8.248.51 AS3320 Deutsche Telekom AG 2.19ms from Duesseldorf, DE
93.219.43.3 AS3320 Deutsche Telekom AG 3.97ms from Frankfurt am Main, DE
218.22.115.163 AS4134 CHINANET-BACKBONE 10.31ms from Huai'an, CN
39.39.27.243 AS17557 Pakistan Telecommunication Company Limited 5.19ms from Karachi, PK
31.15.225.147 AS3212 Telemach Slovenija d.o.o. 0.60ms from Ljubljana, SI
195.147.53.3 AS5413 Wavenet Limited 7.28ms from London, GB
69.248.209.147 AS7922 Comcast Cable Communications, LLC 4.97ms from New York City, US
97.102.155.179 AS33363 Charter Communications, Inc 12.06ms from Orlando, US
70.152.148.3 AS8075 Microsoft Corporation 0.58ms from San Jose, US
70.98.222.3 AS23465 Nuvera 8.97ms from Sioux Falls, US
145.24.20.179 AS1103 SURF B.V. 2.74ms from Amsterdam, NL
89.210.116.3 AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA 1.15ms from Athens, GR
141.30.199.3 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 4.41ms from Berlin, DE
172.172.4.115 AS8075 Microsoft Corporation 0.15ms from Boydton, US
200.117.92.19 AS7303 Telecom Argentina S.A. 9.61ms from Cordoba, AR
151.72.63.147 AS1267 WIND TRE S.P.A. 13.75ms from Frosinone, IT
91.152.63.227 AS719 Elisa Oyj 0.89ms from Helsinki, FI
202.130.106.35 AS9381 HKBN Enterprise Solutions HK Limited 0.39ms from Hong Kong, HK
204.44.73.147 AS36352 HostPapa 0.45ms from Los Angeles, US
176.135.184.3 AS5410 Bouygues Telecom SA 1.31ms from Lyon, FR
71.18.87.227 AS396986 Bytedance Inc. 0.17ms from Milan, IT
111.59.183.35 AS9808 China Mobile Communications Group Co., Ltd. 6.78ms from Nanning, CN
184.153.38.3 AS12271 Charter Communications Inc 3.08ms from New York City, US
167.234.132.195 AS54253 Oracle Corporation 2.07ms from New York City, US

Traceroute

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

$
traceroute -a -n -q1 -m20 121.194.240.7
traceroute to 121.194.240.7 (121.194.240.7): 20 hops max, 52 byte packets
1 [AS209847] 2.56.175.1 7899.252 ms
2 [] 185.151.134.164 13.101 ms
3 [] 185.151.132.243 6.325 ms
4 [] 185.151.132.67 6.687 ms
6 *
7 [AS3356] 4.68.38.86 13.501 ms
8 [AS2914] 129.250.2.24 27.846 ms
9 [AS2914] 129.250.2.36 36.531 ms
10 [AS2914] 129.250.4.80 210.255 ms
11 [AS2914] 129.250.2.189 197.028 ms
12 [AS2914] 203.131.254.214 266.526 ms
13 [AS4538] 101.4.114.221 301.935 ms
14 [AS4538] 101.4.114.169 301.786 ms
15 *
16 [AS4538] 101.4.112.98 296.085 ms
17 [AS4538] 101.4.113.229 287.089 ms
18 *
19 *
20 *
Measurement taken from IPinfo ProbeNet in Zagreb, HR
On

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