1.51.0.0/16
AS4538 · China Education and Research Network Center
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| Country |
China
|
| Domain | cernet.edu.cn |
| ASN | AS4538 |
| Registry | APNIC |
| ID | NJR-CERNET |
WHOIS Details
inetnum: 1.51.0.0 - 1.51.255.255 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: 2020-09-03T09:16:03Z 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: 1.51.0.0/16 descr: CERNET origin: AS4538 mnt-by: MAINT-CERNET-AP last-modified: 2010-07-15T07:00:01Z source: APNIC
Nearby Ranges
BGP prefixes that overlap with 1.0.0.0/8
| Range | ASN | Company | Num of IPs |
|---|---|---|---|
| 1.128.0.0/11 | AS1221 | Telstra Limited | 2,097,152 |
| 1.208.0.0/12 | AS7562 | LG DACOM Corporation | 1,048,576 |
| 1.208.0.0/12 | AS3786 | LG DACOM Corporation | 1,048,576 |
| 1.208.0.0/12 | AS9630 | LG DACOM Corporation | 1,048,576 |
| 1.208.0.0/12 | AS45974 | LG DACOM Corporation | 1,048,576 |
| 1.208.0.0/12 | AS18305 | LG DACOM Corporation | 1,048,576 |
| 1.208.0.0/12 | AS9638 | LG DACOM Corporation | 1,048,576 |
| 1.208.0.0/12 | AS9526 | LG DACOM Corporation | 1,048,576 |
| 1.208.0.0/12 | AS9579 | LG DACOM Corporation | 1,048,576 |
| 1.208.0.0/12 | AS9569 | LG DACOM Corporation | 1,048,576 |
| 1.208.0.0/12 | AS55633 | LG DACOM Corporation | 1,048,576 |
| 1.208.0.0/12 | AS23584 | LG DACOM Corporation | 1,048,576 |
| 1.160.0.0/12 | AS3462 | Data Communication Business Group, | 1,048,576 |
| 1.224.0.0/13 | AS23601 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS23579 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS55615 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS55586 | SK Broadband Co Ltd | 524,288 |
| 1.80.0.0/13 | AS4134 | CHINANET SHAANXI PROVINCE NETWORK | 524,288 |
| 1.192.0.0/13 | AS4134 | CHINANET henan province network | 524,288 |
| 1.120.0.0/13 | AS1221 | Telstra Limited | 524,288 |
| 1.192.0.0/13 | AS139587 | CHINANET henan province network | 524,288 |
| 1.192.0.0/13 | AS139018 | CHINANET henan province network | 524,288 |
| 1.224.0.0/13 | AS9851 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS9638 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS9978 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS38688 | SK Broadband Co Ltd | 524,288 |
| 1.24.0.0/13 | AS9929 | China unicom InnerMongolia province network | 524,288 |
| 1.224.0.0/13 | AS10196 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS9277 | SK Broadband Co Ltd | 524,288 |
| 1.24.0.0/13 | AS4837 | China unicom InnerMongolia province network | 524,288 |
| 1.224.0.0/13 | AS10069 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS17873 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS131852 | SK Broadband Co Ltd | 524,288 |
| 1.56.0.0/13 | AS4837 | China Unicom Heilongjiang province network | 524,288 |
| 1.224.0.0/13 | AS45370 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS9647 | SK Broadband Co Ltd | 524,288 |
| 1.80.0.0/13 | AS4809 | CHINANET SHAANXI PROVINCE NETWORK | 524,288 |
| 1.80.0.0/13 | AS134768 | CHINANET SHAANXI PROVINCE NETWORK | 524,288 |
| 1.224.0.0/13 | AS9967 | SK Broadband Co Ltd | 524,288 |
| 1.24.0.0/13 | AS139007 | China unicom InnerMongolia province network | 524,288 |
| 1.192.0.0/13 | AS137687 | CHINANET henan province network | 524,288 |
| 1.224.0.0/13 | AS46004 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS9318 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS17846 | SK Broadband Co Ltd | 524,288 |
| 1.12.0.0/14 | AS45090 | Tencent cloud computing (Beijing) Co., Ltd. | 262,144 |
| 1.68.0.0/14 | AS4809 | CHINANET SHANXI PROVINCE NETWORK | 262,144 |
| 1.12.0.0/14 | AS132203 | Tencent cloud computing (Beijing) Co., Ltd. | 262,144 |
| 1.68.0.0/14 | AS132147 | CHINANET SHANXI PROVINCE NETWORK | 262,144 |
| 1.52.0.0/14 | AS18403 | FPT Telecom Company | 262,144 |
| 1.68.0.0/14 | AS142404 | CHINANET SHANXI PROVINCE NETWORK | 262,144 |
Hosted domains
There are 7 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.
| IP Address | Domain | Domains on this IP |
|---|---|---|
| 1.51.2.46 | cernet.net | 3 |
| 1.51.27.51 | ika123.cn | 1 |
| 1.51.27.102 | njgenfang.com | 1 |
| 1.51.86.180 | doalias.site | 1 |
Hosted domains API
Pingable IPs
13,509 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 1.51.3.17 |
1.90ms from Beijing,
CN
|
|
| 1.51.255.207 |
5.90ms from Qingdao,
CN
|
|
| 1.51.203.106 |
5.83ms from Qingdao,
CN
|
|
| 1.51.195.93 |
5.80ms from Qingdao,
CN
|
|
| 1.51.1.5 |
5.70ms from Qingdao,
CN
|
|
| 1.51.194.250 |
5.85ms from Qingdao,
CN
|
|
| 1.51.234.77 |
5.78ms from Qingdao,
CN
|
|
| 1.51.243.77 |
5.84ms from Qingdao,
CN
|
|
| 1.51.229.57 |
5.78ms from Qingdao,
CN
|
|
| 1.51.209.8 |
5.78ms from Qingdao,
CN
|
|
| 1.51.254.181 |
5.77ms from Qingdao,
CN
|
|
| 1.51.205.24 |
5.84ms from Qingdao,
CN
|
|
| 1.51.221.67 |
5.80ms from Qingdao,
CN
|
|
| 1.51.220.1 |
5.78ms from Qingdao,
CN
|
|
| 1.51.210.40 |
5.84ms from Qingdao,
CN
|
|
| 1.51.231.247 |
5.81ms from Qingdao,
CN
|
|
| 1.51.204.102 |
5.75ms from Qingdao,
CN
|
|
| 1.51.222.109 |
5.80ms from Qingdao,
CN
|
|
| 1.51.212.200 |
5.79ms from Qingdao,
CN
|
|
| 1.51.112.1 |
13.31ms from Shanghai,
CN
|
|
| 1.51.214.17 |
5.78ms from Qingdao,
CN
|
|
| 1.51.201.37 |
5.75ms from Qingdao,
CN
|
|
| 1.51.6.195 |
1.62ms from Beijing,
CN
|
|
| 1.51.219.162 |
5.81ms from Qingdao,
CN
|
|
| 1.51.223.87 |
5.83ms from Qingdao,
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 |
|---|---|---|
| 193.169.239.112 |
0.20ms from Amsterdam,
NL
|
|
| 45.37.78.48 |
8.81ms from Ashburn,
US
|
|
| 40.88.14.176 |
0.62ms from Ashburn,
US
|
|
| 154.179.224.16 |
4.14ms from Cairo,
EG
|
|
| 184.59.215.160 |
10.80ms from Chicago,
US
|
|
| 104.164.4.176 |
0.14ms from Dallas,
US
|
|
| 104.202.198.144 |
1.75ms from Dallas,
US
|
|
| 47.118.223.80 |
2.15ms from Hangzhou,
CN
|
|
| 126.107.226.144 |
10.83ms from Osaka,
JP
|
|
| 47.216.57.48 |
10.39ms from Phoenix,
US
|
|
| 39.87.25.112 |
9.09ms from Qingdao,
CN
|
|
| 35.175.227.96 |
0.58ms from Reston,
US
|
|
| 152.0.127.224 |
3.76ms from Santo Domingo,
DO
|
|
| 118.39.242.224 |
9.02ms from Seoul,
KR
|
|
| 125.243.87.48 |
1.99ms from Seoul,
KR
|
|
| 113.131.74.0 |
8.17ms from Seoul,
KR
|
|
| 104.215.190.224 |
0.72ms from Singapore,
SG
|
|
| 120.101.95.192 |
3.16ms from Taipei,
TW
|
|
| 80.83.128.32 |
0.35ms from Tbilisi,
GE
|
|
| 180.53.67.128 |
3.00ms from Tokyo,
JP
|
|
| 184.148.48.208 |
2.04ms from Toronto,
CA
|
|
| 188.63.55.112 |
2.34ms from Zuerich,
CH
|
|
| 163.172.121.192 |
0.25ms from Amsterdam,
NL
|
|
| 98.122.144.144 |
5.64ms from Charlotte,
US
|
|
| 87.138.225.208 |
2.25ms from Duesseldorf,
DE
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
IPinfo ProbeNet
in Agana Heights Village, GU
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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