121.248.0.0/14
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Registry | APNIC |
| ID | NJR-CERNET |
WHOIS Details
inetnum: 121.248.0.0 - 121.251.255.255 netname: NJR-CERNET descr: China Education and Research Network descr: Nanjing Regional Network country: CN admin-c: CER-AP tech-c: CER-AP abuse-c: AC1685-AP status: ALLOCATED PORTABLE remarks: origin AS4538 remarks: confederation remarks: -------------------------------------------------------- remarks: To report network abuse, please contact mnt-irt remarks: For troubleshooting, please contact tech-c and admin-c remarks: Report invalid contact via www.apnic.net/invalidcontact remarks: -------------------------------------------------------- mnt-by: APNIC-HM mnt-lower: MAINT-CERNET-AP mnt-routes: MAINT-CERNET-AP mnt-irt: IRT-CERNET-AP last-modified: 2020-09-03T09:15:58Z 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: 121.250.0.0/15 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 | AS17588 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS4766 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS4766 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38089 | 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 |
| 121.128.0.0/11 | AS38122 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9856 | Korea Telecom | 2,097,152 |
| 121.224.0.0/12 | AS4134 | 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 | AS134770 | 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 | AS137699 | 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 | AS137697 | CHINANET jiangsu province network | 1,048,576 |
| 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 | AS135089 | 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 |
| 121.8.0.0/13 | AS4134 | CHINANET Guangdong province network | 524,288 |
| 121.196.0.0/14 | AS37963 | Aliyun Computing Co., LTD | 262,144 |
| 121.64.0.0/14 | AS3786 | LG DACOM Corporation | 262,144 |
| 121.60.0.0/14 | AS4134 | CHINANET Hubei province network | 262,144 |
| 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 |
| 121.32.0.0/14 | AS4134 | CHINANET Guangdong province network | 262,144 |
| 121.64.0.0/14 | AS17586 | LG DACOM Corporation | 262,144 |
| 121.24.0.0/14 | AS4837 | China Unicom Hebei province network | 262,144 |
| 121.204.0.0/14 | AS133776 | CHINANET Fujian province network | 262,144 |
| 121.204.0.0/14 | AS133774 | CHINANET Fujian province network | 262,144 |
| 121.80.0.0/14 | AS17511 | OPTAGE Inc. | 262,144 |
| 121.204.0.0/14 | AS133775 | CHINANET Fujian province network | 262,144 |
| 121.64.0.0/14 | AS17598 | LG DACOM Corporation | 262,144 |
| 121.84.0.0/14 | AS17511 | OPTAGE Inc. | 262,144 |
| 121.60.0.0/14 | AS148981 | CHINANET Hubei province network | 262,144 |
| 121.2.0.0/15 | AS2527 | Sony Network Communications Inc. | 131,072 |
| 121.28.0.0/15 | AS4837 | China Unicom Hebei province network | 131,072 |
| 121.98.0.0/15 | AS9790 | Two Degrees Mobile Limited | 131,072 |
| 121.202.0.0/15 | AS17924 | SmarTone Mobile Communications Ltd | 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 |
| 121.194.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
| 121.96.0.0/15 | AS6648 | Bayan Telecommunications Incorporated | 131,072 |
| 121.124.0.0/15 | AS9318 | SK Broadband Co Ltd | 131,072 |
Hosted domains
There are 25 domain names hosted across 19 IP addresses on this ASN. Checkout our API to access full domain hosting information.
| IP Address | Domain | Domains on this IP |
|---|---|---|
| 121.250.192.3 | sdbi.edu.cn | 2 |
| 121.250.56.142 | jngcxy.edu.cn | 1 |
| 121.250.223.140 | omrailgun.org | 1 |
| 121.250.51.1 | qcl.edu.cn | 1 |
| 121.250.208.51 | xluan.love | 1 |
Hosted domains API
Pingable IPs
591 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 121.250.51.6 |
6.00ms from Qingdao,
CN
|
|
| 121.248.232.1 |
13.01ms from Shanghai,
CN
|
|
| 121.248.70.219 |
13.56ms from Shanghai,
CN
|
|
| 121.250.207.158 |
14.89ms from Qingdao,
CN
|
|
| 121.250.130.2 |
10.76ms from Qingdao,
CN
|
|
| 121.248.184.3 |
9.28ms from Shanghai,
CN
|
|
| 121.248.72.222 |
10.83ms from Shanghai,
CN
|
|
| 121.248.64.10 |
10.44ms from Shanghai,
CN
|
|
| 121.250.58.2 |
7.79ms from Qingdao,
CN
|
|
| 121.248.233.1 |
13.09ms from Shanghai,
CN
|
|
| 121.248.76.2 |
12.18ms from Shanghai,
CN
|
|
| 121.251.17.1 |
11.53ms from Shanghai,
CN
|
|
| 121.249.143.16 |
8.97ms from Qingdao,
CN
|
|
| 121.249.175.37 |
5.73ms from Qingdao,
CN
|
|
| 121.251.40.4 |
17.16ms from Shanghai,
CN
|
|
| 121.251.88.1 |
13.53ms from Shanghai,
CN
|
|
| 121.250.234.48 |
6.16ms from Qingdao,
CN
|
|
| 121.248.112.30 |
13.54ms from Shanghai,
CN
|
|
| 121.250.88.28 |
10.13ms from Qingdao,
CN
|
|
| 121.248.58.76 |
6.73ms from Shanghai,
CN
|
|
| 121.248.63.176 |
6.97ms from Shanghai,
CN
|
|
| 121.251.0.59 |
13.46ms from Shanghai,
CN
|
|
| 121.248.75.1 |
17.53ms from Shanghai,
CN
|
|
| 121.248.73.249 |
11.33ms from Shanghai,
CN
|
|
| 121.248.114.54 |
5.86ms from Shanghai,
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 |
|---|---|---|
| 75.165.239.254 |
8.44ms from Ashburn,
US
|
|
| 144.163.17.254 |
11.93ms from Atlanta,
US
|
|
| 24.135.99.190 |
6.32ms from Belgrade,
RS
|
|
| 77.22.150.254 |
1.92ms from Berlin,
DE
|
|
| 93.225.231.254 |
4.90ms from Berlin,
DE
|
|
| 222.211.23.142 |
4.38ms from Chengdu,
CN
|
|
| 71.32.181.254 |
11.63ms from Chicago,
US
|
|
| 18.225.2.78 |
0.14ms from Columbus,
US
|
|
| 208.92.179.14 |
0.90ms from Denver,
US
|
|
| 76.18.70.94 |
13.57ms from Denver,
US
|
|
| 52.180.173.78 |
0.54ms from Des Moines,
US
|
|
| 192.54.45.142 |
1.36ms from Duesseldorf,
DE
|
|
| 92.141.6.94 |
13.39ms from Frankfurt am Main,
DE
|
|
| 188.151.130.254 |
4.32ms from Goeteborg,
SE
|
|
| 175.150.50.78 |
11.80ms from Liaoyang,
CN
|
|
| 196.170.80.142 |
2.91ms from Lomé,
TG
|
|
| 104.244.136.14 |
0.41ms from Los Angeles,
US
|
|
| 90.51.55.222 |
13.06ms from Marseille,
FR
|
|
| 87.28.129.254 |
0.38ms from Milan,
IT
|
|
| 82.200.27.254 |
8.84ms from Novosibirsk,
RU
|
|
| 83.108.75.62 |
1.23ms from Oslo,
NO
|
|
| 4.211.152.206 |
0.38ms from Paris,
FR
|
|
| 39.88.29.62 |
1.69ms from Qingdao,
CN
|
|
| 3.209.67.254 |
0.22ms from Reston,
US
|
|
| 220.122.246.190 |
7.09ms from Seoul,
KR
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Paris, FR
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