121.193.0.0/16
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: 121.193.0.0 - 121.193.255.255 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: 2020-09-03T09:16:09Z 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: 121.193.0.0/16 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 |
|---|---|---|---|
| 121.128.0.0/11 | AS38122 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS4766 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS17588 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS23582 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS4766 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS18333 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9856 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38089 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9647 | Korea Telecom | 2,097,152 |
| 121.224.0.0/12 | AS4134 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS134770 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS137702 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS137699 | CHINANET jiangsu province network | 1,048,576 |
| 121.208.0.0/12 | AS1221 | Telstra Limited | 1,048,576 |
| 121.224.0.0/12 | AS140292 | 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 | AS146966 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS137697 | CHINANET jiangsu province network | 1,048,576 |
| 121.112.0.0/13 | AS4713 | NTT DOCOMO BUSINESS,Inc. | 524,288 |
| 121.8.0.0/13 | AS140308 | CHINANET Guangdong province network | 524,288 |
| 121.8.0.0/13 | AS135089 | CHINANET Guangdong province network | 524,288 |
| 121.8.0.0/13 | AS136199 | CHINANET Guangdong province network | 524,288 |
| 121.8.0.0/13 | AS4134 | CHINANET Guangdong province network | 524,288 |
| 121.16.0.0/13 | AS4837 | China Unicom Hebei province network | 524,288 |
| 121.204.0.0/14 | AS4134 | CHINANET Fujian 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 |
| 121.24.0.0/14 | AS4837 | China Unicom Hebei province network | 262,144 |
| 121.60.0.0/14 | AS4134 | CHINANET Hubei province network | 262,144 |
| 121.64.0.0/14 | AS17598 | LG DACOM Corporation | 262,144 |
| 121.80.0.0/14 | AS17511 | OPTAGE Inc. | 262,144 |
| 121.248.0.0/14 | AS4538 | China Education and Research Network | 262,144 |
| 121.64.0.0/14 | AS17586 | LG DACOM Corporation | 262,144 |
| 121.204.0.0/14 | AS133774 | CHINANET Fujian province network | 262,144 |
| 121.64.0.0/14 | AS23555 | LG DACOM Corporation | 262,144 |
| 121.204.0.0/14 | AS133775 | CHINANET Fujian province network | 262,144 |
| 121.204.0.0/14 | AS133776 | CHINANET Fujian province network | 262,144 |
| 121.84.0.0/14 | AS17511 | OPTAGE Inc. | 262,144 |
| 121.40.0.0/14 | AS37963 | Aliyun Computing Co., LTD | 262,144 |
| 121.60.0.0/14 | AS148981 | CHINANET Hubei province network | 262,144 |
| 121.196.0.0/14 | AS37963 | Aliyun Computing Co., LTD | 262,144 |
| 121.44.0.0/15 | AS4739 | iiNet Limited | 131,072 |
| 121.48.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
| 121.2.0.0/15 | AS2527 | Sony Network Communications Inc. | 131,072 |
| 121.4.0.0/15 | AS132203 | Tencent cloud computing (Beijing) Co., Ltd. | 131,072 |
| 121.124.0.0/15 | AS9318 | SK Broadband Co Ltd | 131,072 |
| 121.202.0.0/15 | AS17924 | SmarTone Mobile Communications Ltd | 131,072 |
| 121.194.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
| 121.98.0.0/15 | AS9790 | Two Degrees Mobile Limited | 131,072 |
| 121.4.0.0/15 | AS45090 | Tencent cloud computing (Beijing) Co., Ltd. | 131,072 |
Hosted domains
There are 5 domain names hosted across 6 IP addresses on this ASN. Checkout our API to access full domain hosting information.
| IP Address | Domain | Domains on this IP |
|---|---|---|
| 121.193.164.152 | alink-wqedu.fun | 1 |
| 121.193.149.171 | tjufe.edu.cn | 1 |
Hosted domains API
Pingable IPs
283 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 121.193.143.225 |
4.09ms from Beijing,
CN
|
|
| 121.193.177.253 |
5.42ms from Beijing,
CN
|
|
| 121.193.131.106 |
6.36ms from Beijing,
CN
|
|
| 121.193.163.254 |
6.03ms from Beijing,
CN
|
|
| 121.193.164.152 |
7.67ms from Beijing,
CN
|
|
| 121.193.151.84 |
4.64ms from Beijing,
CN
|
|
| 121.193.136.126 |
4.52ms from Beijing,
CN
|
|
| 121.193.176.99 |
6.26ms from Beijing,
CN
|
|
| 121.193.168.60 |
6.85ms from Beijing,
CN
|
|
| 121.193.149.226 |
5.72ms from Beijing,
CN
|
|
| 121.193.184.78 |
4.64ms from Beijing,
CN
|
|
| 121.193.165.254 |
6.72ms from Beijing,
CN
|
|
| 121.193.178.54 |
6.49ms from Beijing,
CN
|
|
| 121.193.175.253 |
4.50ms from Beijing,
CN
|
|
| 121.193.183.254 |
4.96ms from Beijing,
CN
|
|
| 121.193.141.17 |
4.28ms from Beijing,
CN
|
|
| 121.193.173.254 |
6.22ms from Beijing,
CN
|
|
| 121.193.190.254 |
6.81ms from Beijing,
CN
|
|
| 121.193.191.253 |
4.70ms from Beijing,
CN
|
|
| 121.193.160.13 |
4.42ms from Beijing,
CN
|
|
| 121.193.132.42 |
6.94ms from Beijing,
CN
|
|
| 121.193.161.228 |
4.58ms from Beijing,
CN
|
|
| 121.193.182.17 |
4.30ms from Beijing,
CN
|
|
| 121.193.186.18 |
6.45ms from Beijing,
CN
|
|
| 121.193.174.110 |
5.28ms 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 |
|---|---|---|
| 93.119.6.192 |
0.54ms from Amsterdam,
NL
|
|
| 108.87.158.192 |
11.47ms from Atlanta,
US
|
|
| 54.184.208.64 |
0.21ms from Boardman,
US
|
|
| 109.128.103.80 |
2.15ms from Brussels,
BE
|
|
| 104.104.21.16 |
0.42ms from Buenos Aires,
AR
|
|
| 48.216.36.240 |
0.89ms from Dallas,
US
|
|
| 37.53.239.16 |
10.06ms from Kyiv,
UA
|
|
| 183.209.133.0 |
1.90ms from Nanjing,
CN
|
|
| 92.126.39.208 |
5.24ms from Novosibirsk,
RU
|
|
| 43.203.146.128 |
0.52ms from Seoul,
KR
|
|
| 119.205.70.96 |
2.28ms from Seoul,
KR
|
|
| 211.88.241.160 |
3.58ms from Tianjin,
CN
|
|
| 52.138.48.112 |
0.16ms from Toronto,
CA
|
|
| 186.82.177.160 |
8.86ms from Bogota,
CO
|
|
| 3.17.140.0 |
0.68ms from Columbus,
US
|
|
| 68.189.213.80 |
6.93ms from Dallas,
US
|
|
| 47.111.31.16 |
4.47ms from Hangzhou,
CN
|
|
| 223.7.92.128 |
6.32ms from Hangzhou,
CN
|
|
| 81.43.152.144 |
6.60ms from Madrid,
ES
|
|
| 176.212.148.64 |
7.20ms from Moscow,
RU
|
|
| 73.25.220.112 |
5.84ms from Portland,
US
|
|
| 54.167.68.16 |
0.26ms from Reston,
US
|
|
| 71.139.38.32 |
15.51ms from San Antonio,
US
|
|
| 58.239.195.48 |
6.38ms from Seoul,
KR
|
|
| 8.129.38.0 |
1.75ms from Shenzhen,
CN
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Beijing, CN
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