121.194.0.0/15
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| 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: 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: 121.195.0.0/16 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2009-01-05T03:10:57Z source: APNIC
Nearby Ranges
BGP prefixes that overlap with 121.0.0.0/8
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.160.0.0/11 | AS38089 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS38122 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS17588 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS4766 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS4766 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9856 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS18333 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9647 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS23582 | Korea Telecom | 2,097,152 |
| 121.224.0.0/12 | AS4134 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS140292 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS146966 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS134756 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS137697 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS137699 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS134770 | CHINANET jiangsu province network | 1,048,576 |
| 121.208.0.0/12 | AS1221 | Telstra Limited | 1,048,576 |
| 121.224.0.0/12 | AS140293 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS137702 | CHINANET jiangsu province network | 1,048,576 |
| 121.8.0.0/13 | AS135089 | CHINANET Guangdong province network | 524,288 |
| 121.8.0.0/13 | AS140308 | CHINANET Guangdong province network | 524,288 |
| 121.8.0.0/13 | AS136199 | CHINANET Guangdong province network | 524,288 |
| 121.16.0.0/13 | AS4837 | China Unicom Hebei province network | 524,288 |
| 121.8.0.0/13 | AS4134 | CHINANET Guangdong province network | 524,288 |
| 121.112.0.0/13 | AS4713 | NTT DOCOMO BUSINESS,Inc. | 524,288 |
| 121.64.0.0/14 | AS23555 | LG DACOM Corporation | 262,144 |
| 121.204.0.0/14 | AS4134 | CHINANET Fujian province network | 262,144 |
| 121.40.0.0/14 | AS37963 | Aliyun Computing Co., LTD | 262,144 |
| 121.24.0.0/14 | AS4837 | China Unicom Hebei province network | 262,144 |
| 121.196.0.0/14 | AS37963 | Aliyun Computing Co., LTD | 262,144 |
| 121.60.0.0/14 | AS4134 | CHINANET Hubei province network | 262,144 |
| 121.64.0.0/14 | AS3786 | LG DACOM Corporation | 262,144 |
| 121.32.0.0/14 | AS4134 | CHINANET Guangdong province network | 262,144 |
| 121.64.0.0/14 | AS17586 | LG DACOM Corporation | 262,144 |
| 121.64.0.0/14 | AS17598 | LG DACOM Corporation | 262,144 |
| 121.204.0.0/14 | AS133775 | CHINANET Fujian province network | 262,144 |
| 121.84.0.0/14 | AS17511 | OPTAGE Inc. | 262,144 |
| 121.248.0.0/14 | AS4538 | China Education and Research Network | 262,144 |
| 121.204.0.0/14 | AS133776 | CHINANET Fujian province network | 262,144 |
| 121.60.0.0/14 | AS137266 | CHINANET Hubei province network | 262,144 |
| 121.204.0.0/14 | AS133774 | CHINANET Fujian province network | 262,144 |
| 121.60.0.0/14 | AS148981 | CHINANET Hubei province network | 262,144 |
| 121.80.0.0/14 | AS17511 | OPTAGE Inc. | 262,144 |
| 121.124.0.0/15 | AS9318 | SK Broadband Co Ltd | 131,072 |
| 121.96.0.0/15 | AS6648 | Bayan Telecommunications Incorporated | 131,072 |
| 121.4.0.0/15 | AS132203 | Tencent cloud computing (Beijing) Co., Ltd. | 131,072 |
| 121.48.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
| 121.76.0.0/15 | AS9812 | Oriental Cable Network Co., Ltd. | 131,072 |
| 121.44.0.0/15 | AS4739 | iiNet Limited | 131,072 |
Hosted domains
There are 95 domain names hosted across 66 IP addresses on this ASN. Checkout our API to access full domain hosting information.
| IP Address | Domain | Domains on this IP |
|---|
Hosted domains API
Pingable IPs
968 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 121.194.8.2 |
2.43ms from Beijing,
CN
|
|
| 121.194.32.1 |
2.93ms from Beijing,
CN
|
|
| 121.194.16.25 |
19.24ms from Liaoyang,
CN
|
|
| 121.194.57.158 |
3.16ms from Beijing,
CN
|
|
| 121.194.4.254 |
2.50ms from Beijing,
CN
|
|
| 121.194.1.30 |
2.51ms from Beijing,
CN
|
|
| 121.194.0.143 |
2.54ms from Beijing,
CN
|
|
| 121.194.13.98 |
3.09ms from Beijing,
CN
|
|
| 121.194.2.149 |
2.97ms from Beijing,
CN
|
|
| 121.194.14.103 |
3.66ms from Shanghai,
CN
|
|
| 121.194.15.154 |
2.69ms from Beijing,
CN
|
|
| 121.194.9.229 |
2.52ms from Beijing,
CN
|
|
| 121.194.175.253 |
2.92ms from Beijing,
CN
|
|
| 121.194.7.24 |
2.62ms from Beijing,
CN
|
|
| 121.194.11.28 |
2.54ms from Beijing,
CN
|
|
| 121.194.5.38 |
2.38ms from Beijing,
CN
|
|
| 121.194.220.1 |
3.06ms from Beijing,
CN
|
|
| 121.194.212.126 |
4.96ms from Beijing,
CN
|
|
| 121.194.3.182 |
2.91ms from Beijing,
CN
|
|
| 121.194.17.247 |
27.22ms from Zhengzhou,
CN
|
|
| 121.194.10.74 |
2.24ms from Tianjin,
CN
|
|
| 121.194.62.70 |
3.59ms from Beijing,
CN
|
|
| 121.194.60.3 |
3.48ms from Beijing,
CN
|
|
| 121.194.168.215 |
3.54ms from Beijing,
CN
|
|
| 121.194.33.194 |
3.49ms from Beijing,
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 |
|---|---|---|
| 156.204.203.127 |
2.83ms from Cairo,
EG
|
|
| 73.125.149.223 |
3.06ms from Miami,
US
|
|
| 79.24.172.175 |
4.21ms from Milan,
IT
|
|
| 15.156.59.175 |
0.84ms from Montreal,
CA
|
|
| 90.25.192.143 |
2.37ms from Paris,
FR
|
|
| 218.12.185.255 |
14.40ms from Qingdao,
CN
|
|
| 52.206.240.47 |
0.22ms from Reston,
US
|
|
| 112.182.161.175 |
4.74ms from Seoul,
KR
|
|
| 175.32.184.79 |
2.17ms from Sydney,
AU
|
|
| 114.155.64.47 |
3.06ms from Tokyo,
JP
|
|
| 186.167.79.223 |
18.68ms from Willemstad,
CW
|
|
| 98.206.37.79 |
6.73ms from Chicago,
US
|
|
| 35.226.52.127 |
0.36ms from Council Bluffs,
US
|
|
| 87.152.226.15 |
3.66ms from Duesseldorf,
DE
|
|
| 4.165.214.47 |
0.24ms from Gaevle,
SE
|
|
| 92.31.201.191 |
5.84ms from London,
GB
|
|
| 109.156.105.95 |
6.19ms from London,
GB
|
|
| 75.237.132.111 |
18.11ms from Los Angeles,
US
|
|
| 181.141.1.207 |
19.72ms from Medellin,
CO
|
|
| 185.213.89.223 |
0.13ms from Meppel,
NL
|
|
| 129.171.37.143 |
1.78ms from Miami,
US
|
|
| 52.199.0.239 |
0.20ms from Tokyo,
JP
|
|
| 57.138.7.63 |
6.08ms from Tulsa,
US
|
|
| 132.250.2.111 |
2.65ms from Ashburn,
US
|
|
| 100.23.188.79 |
0.16ms from Boardman,
US
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Fremont, US
What are IP address ranges?
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