121.192.0.0/14
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: [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 are contained by 121.192.0.0/14
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.192.0.0/16 | AS4538 | China Education and Research Network | 65,536 |
| 121.193.0.0/16 | AS4538 | China Education and Research Network | 65,536 |
| 121.194.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
Nearby Ranges
BGP prefixes that overlap with 121.0.0.0/8
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 121.128.0.0/11 | AS18333 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS17588 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS38122 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS23582 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38089 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS4766 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9856 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9647 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS4766 | Korea Telecom | 2,097,152 |
| 121.224.0.0/12 | AS4134 | 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 | 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 | AS134770 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS140293 | CHINANET jiangsu province network | 1,048,576 |
| 121.208.0.0/12 | AS1221 | Telstra Limited | 1,048,576 |
| 121.224.0.0/12 | AS137699 | 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 | 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 | AS136199 | CHINANET Guangdong province network | 524,288 |
| 121.8.0.0/13 | AS140308 | 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 |
| 121.112.0.0/13 | AS4713 | NTT DOCOMO BUSINESS,Inc. | 524,288 |
| 121.64.0.0/14 | AS17586 | LG DACOM Corporation | 262,144 |
| 121.64.0.0/14 | AS23555 | LG DACOM Corporation | 262,144 |
| 121.84.0.0/14 | AS17511 | OPTAGE Inc. | 262,144 |
| 121.64.0.0/14 | AS17598 | LG DACOM Corporation | 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 |
| 121.204.0.0/14 | AS133776 | CHINANET Fujian province network | 262,144 |
| 121.204.0.0/14 | AS133775 | CHINANET Fujian province network | 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 |
| 121.60.0.0/14 | AS148981 | CHINANET Hubei province network | 262,144 |
| 121.80.0.0/14 | AS17511 | OPTAGE Inc. | 262,144 |
| 121.60.0.0/14 | AS137266 | CHINANET Hubei province network | 262,144 |
| 121.196.0.0/14 | AS37963 | Aliyun Computing Co., LTD | 262,144 |
| 121.24.0.0/14 | AS4837 | China Unicom Hebei province network | 262,144 |
| 121.204.0.0/14 | AS133774 | CHINANET Fujian province network | 262,144 |
| 121.248.0.0/14 | AS4538 | China Education and Research Network | 262,144 |
| 121.98.0.0/15 | AS9790 | Two Degrees Mobile Limited | 131,072 |
| 121.76.0.0/15 | AS9812 | Oriental Cable Network Co., Ltd. | 131,072 |
| 121.48.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
| 121.4.0.0/15 | AS45090 | Tencent cloud computing (Beijing) Co., Ltd. | 131,072 |
| 121.2.0.0/15 | AS2527 | Sony Network Communications Inc. | 131,072 |
| 121.194.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
| 121.44.0.0/15 | AS4739 | iiNet Limited | 131,072 |
Hosted domains
There are 113 domain names hosted across 75 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
2,744 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 121.194.1.6 |
2.52ms from Beijing,
CN
|
|
| 121.194.212.126 |
3.84ms from Beijing,
CN
|
|
| 121.193.177.253 |
5.45ms from Beijing,
CN
|
|
| 121.194.58.237 |
3.55ms from Beijing,
CN
|
|
| 121.193.168.60 |
6.78ms from Beijing,
CN
|
|
| 121.193.222.201 |
15.24ms from Beijing,
CN
|
|
| 121.194.10.74 |
2.26ms from Tianjin,
CN
|
|
| 121.194.13.101 |
3.06ms from Beijing,
CN
|
|
| 121.194.175.253 |
2.92ms from Tianjin,
CN
|
|
| 121.193.167.254 |
7.48ms from Beijing,
CN
|
|
| 121.193.190.254 |
6.69ms from Tianjin,
CN
|
|
| 121.194.8.4 |
2.53ms from Beijing,
CN
|
|
| 121.194.32.1 |
2.97ms from Beijing,
CN
|
|
| 121.194.14.99 |
3.98ms from Shanghai,
CN
|
|
| 121.193.163.254 |
5.95ms from Beijing,
CN
|
|
| 121.194.4.254 |
2.49ms from Beijing,
CN
|
|
| 121.194.16.3 |
32.54ms from Zhengzhou,
CN
|
|
| 121.194.167.2 |
1.85ms from Beijing,
CN
|
|
| 121.193.142.237 |
4.41ms from Beijing,
CN
|
|
| 121.193.178.53 |
6.63ms from Beijing,
CN
|
|
| 121.193.141.4 |
4.31ms from Beijing,
CN
|
|
| 121.193.182.26 |
4.44ms from Beijing,
CN
|
|
| 121.193.185.193 |
6.71ms from Beijing,
CN
|
|
| 121.193.143.234 |
4.19ms from Beijing,
CN
|
|
| 121.194.7.24 |
2.61ms 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 |
|---|---|---|
| 20.61.54.222 |
0.28ms from Amsterdam,
NL
|
|
| 68.80.126.238 |
8.11ms from Ashburn,
US
|
|
| 78.139.14.126 |
2.22ms from Budapest,
HU
|
|
| 34.132.156.30 |
0.11ms from Council Bluffs,
US
|
|
| 95.90.8.254 |
4.02ms from Frankfurt am Main,
DE
|
|
| 80.133.244.30 |
6.06ms from Frankfurt am Main,
DE
|
|
| 91.22.146.238 |
5.34ms from Frankfurt am Main,
DE
|
|
| 218.19.108.142 |
2.44ms from Guangzhou,
CN
|
|
| 220.241.95.46 |
2.10ms from Hong Kong,
HK
|
|
| 39.34.181.78 |
2.09ms from Islamabad,
PK
|
|
| 87.225.10.110 |
1.15ms from Khabarovsk,
RU
|
|
| 6.4.236.206 |
1.72ms from Los Angeles,
US
|
|
| 75.146.182.14 |
7.21ms from Minneapolis,
US
|
|
| 131.202.9.190 |
15.66ms from Montreal,
CA
|
|
| 54.94.101.158 |
0.15ms from Osasco,
BR
|
|
| 177.69.26.190 |
0.88ms from Osasco,
BR
|
|
| 123.129.134.46 |
7.25ms from Qingdao,
CN
|
|
| 119.179.25.14 |
10.18ms from Qingdao,
CN
|
|
| 103.239.155.30 |
6.92ms from Qingdao,
CN
|
|
| 87.23.198.254 |
4.02ms from Rome,
IT
|
|
| 218.153.140.126 |
1.10ms from Seoul,
KR
|
|
| 116.14.83.254 |
0.93ms from Singapore,
SG
|
|
| 36.129.47.110 |
5.78ms from Tieling,
CN
|
|
| 223.217.21.206 |
4.43ms from Tokyo,
JP
|
|
| 153.195.87.222 |
3.00ms from Tokyo,
JP
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Bucharest, RO
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