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: 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: 121.193.0.0/16 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 |
|---|---|---|---|
| 121.160.0.0/11 | AS38427 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS38395 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS17859 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38431 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS152214 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS38394 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS18333 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS38412 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS17588 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38087 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38089 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS23582 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS3786 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS55615 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38404 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS38399 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38392 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS17862 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS55622 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS18023 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38415 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38391 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS131792 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS3786 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS10167 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9526 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS38126 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS9647 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS38122 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9530 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS4766 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS46002 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9870 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9776 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS9778 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38093 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9856 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS4766 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS9708 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9696 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS45399 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9647 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS9530 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS9843 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS9684 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS38697 | Korea Telecom | 2,097,152 |
| 121.160.0.0/11 | AS38696 | Korea Telecom | 2,097,152 |
| 121.128.0.0/11 | AS9638 | Korea Telecom | 2,097,152 |
| 121.224.0.0/12 | AS4134 | CHINANET jiangsu province network | 1,048,576 |
| 121.224.0.0/12 | AS146966 | CHINANET jiangsu province network | 1,048,576 |
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 |
|---|---|---|
| 121.193.213.11 | burwelldivorcelawyer.com | 1 |
| 121.193.132.24 | gtsi.edu.cn | 1 |
| 121.193.149.171 | tjufe.edu.cn | 1 |
Hosted domains API
Pingable IPs
280 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 121.193.173.254 |
6.26ms from Beijing,
CN
|
|
| 121.193.160.253 |
4.54ms from Beijing,
CN
|
|
| 121.193.185.193 |
6.79ms from Beijing,
CN
|
|
| 121.193.174.111 |
6.13ms from Beijing,
CN
|
|
| 121.193.222.201 |
15.24ms from Tianjin,
CN
|
|
| 121.193.176.13 |
6.57ms from Beijing,
CN
|
|
| 121.193.168.60 |
6.94ms from Beijing,
CN
|
|
| 121.193.190.254 |
6.90ms from Beijing,
CN
|
|
| 121.193.143.234 |
4.08ms from Beijing,
CN
|
|
| 121.193.183.254 |
4.96ms from Beijing,
CN
|
|
| 121.193.191.253 |
4.72ms from Beijing,
CN
|
|
| 121.193.132.42 |
6.95ms from Beijing,
CN
|
|
| 121.193.131.8 |
6.17ms from Beijing,
CN
|
|
| 121.193.177.253 |
5.48ms from Beijing,
CN
|
|
| 121.193.184.78 |
5.46ms from Beijing,
CN
|
|
| 121.193.161.214 |
4.35ms from Beijing,
CN
|
|
| 121.193.149.191 |
5.51ms from Beijing,
CN
|
|
| 121.193.165.254 |
6.46ms from Beijing,
CN
|
|
| 121.193.186.18 |
6.48ms from Beijing,
CN
|
|
| 121.193.171.254 |
4.84ms from Tianjin,
CN
|
|
| 121.193.130.40 |
5.21ms from Beijing,
CN
|
|
| 121.193.151.84 |
4.49ms from Beijing,
CN
|
|
| 121.193.178.53 |
6.54ms from Tianjin,
CN
|
|
| 121.193.136.225 |
4.29ms from Beijing,
CN
|
|
| 121.193.163.254 |
5.88ms 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 |
|---|---|---|
| 171.78.179.32 |
1.89ms from Hyderabad,
IN
|
|
| 87.225.71.32 |
0.89ms from Khabarovsk,
RU
|
|
| 82.88.245.0 |
7.72ms from Milan,
IT
|
|
| 85.30.242.208 |
3.12ms from Moscow,
RU
|
|
| 71.169.14.96 |
3.09ms from New York City,
US
|
|
| 124.131.45.80 |
5.33ms from Qingdao,
CN
|
|
| 97.146.13.64 |
15.12ms from Reston,
US
|
|
| 14.85.0.16 |
2.99ms from Seoul,
KR
|
|
| 59.8.6.32 |
9.98ms from Seoul,
KR
|
|
| 197.26.62.240 |
8.15ms from Tunis,
TN
|
|
| 47.92.168.128 |
0.17ms from Zhangjiakou,
CN
|
|
| 172.206.39.48 |
0.36ms from Boydton,
US
|
|
| 190.153.52.240 |
1.30ms from Caracas,
VE
|
|
| 218.8.211.208 |
14.57ms from Changchun,
CN
|
|
| 76.227.25.112 |
18.08ms from Dallas,
US
|
|
| 157.240.0.48 |
0.16ms from Frankfurt am Main,
DE
|
|
| 109.134.247.0 |
3.82ms from Gravelines,
FR
|
|
| 47.111.31.16 |
4.36ms from Hangzhou,
CN
|
|
| 27.111.47.240 |
0.39ms from Jakarta,
ID
|
|
| 183.207.215.80 |
1.69ms from Nanjing,
CN
|
|
| 88.124.39.144 |
9.15ms from Paris,
FR
|
|
| 176.140.25.144 |
13.56ms from Paris,
FR
|
|
| 112.240.135.208 |
9.33ms from Qingdao,
CN
|
|
| 98.80.84.48 |
0.18ms from Reston,
US
|
|
| 31.176.209.64 |
5.45ms from Sarajevo,
BA
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
What are IP address ranges?
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.
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