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 | AS3786 | LG DACOM Corporation | 1,048,576 |
| 1.160.0.0/12 | AS3462 | Data Communication Business Group, | 1,048,576 |
| 1.224.0.0/13 | AS10069 | SK Broadband Co Ltd | 524,288 |
| 1.224.0.0/13 | AS131852 | SK Broadband Co Ltd | 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 | AS137687 | CHINANET henan province network | 524,288 |
| 1.24.0.0/13 | AS139007 | China unicom InnerMongolia province network | 524,288 |
| 1.80.0.0/13 | AS4134 | CHINANET SHAANXI PROVINCE NETWORK | 524,288 |
| 1.192.0.0/13 | AS139587 | CHINANET henan province network | 524,288 |
| 1.24.0.0/13 | AS9929 | China unicom InnerMongolia province network | 524,288 |
| 1.80.0.0/13 | AS134768 | CHINANET SHAANXI PROVINCE NETWORK | 524,288 |
| 1.80.0.0/13 | AS4809 | CHINANET SHAANXI PROVINCE NETWORK | 524,288 |
| 1.192.0.0/13 | AS139018 | CHINANET henan province network | 524,288 |
| 1.24.0.0/13 | AS4837 | China unicom InnerMongolia province network | 524,288 |
| 1.224.0.0/13 | AS9318 | SK Broadband Co Ltd | 524,288 |
| 1.56.0.0/13 | AS4837 | China Unicom Heilongjiang province network | 524,288 |
| 1.224.0.0/13 | AS23579 | SK Broadband Co Ltd | 524,288 |
| 1.188.0.0/14 | AS4837 | China Unicom Heilongjiang province network | 262,144 |
| 1.204.0.0/14 | AS4134 | CHINANET GUIZHOU PROVINCE NETWORK | 262,144 |
| 1.180.0.0/14 | AS4134 | CHINANET NeiMengGu 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 |
| 1.68.0.0/14 | AS142404 | CHINANET SHANXI PROVINCE NETWORK | 262,144 |
| 1.52.0.0/14 | AS18403 | FPT Telecom Company | 262,144 |
| 1.68.0.0/14 | AS4134 | CHINANET SHANXI PROVINCE NETWORK | 262,144 |
| 1.180.0.0/14 | AS141006 | CHINANET NeiMengGu province network | 262,144 |
| 1.40.0.0/14 | AS4804 | OPTUS INTERNET - RETAIL | 262,144 |
| 1.68.0.0/14 | AS4809 | CHINANET SHANXI PROVINCE NETWORK | 262,144 |
| 1.112.0.0/14 | AS17676 | SOFTBANK Corp. | 262,144 |
| 1.12.0.0/14 | AS45090 | Tencent cloud computing (Beijing) Co., Ltd. | 262,144 |
| 1.48.0.0/15 | AS4134 | CHINANET GUIZHOU PROVINCE NETWORK | 131,072 |
| 1.116.0.0/15 | AS45090 | Tencent cloud computing (Beijing) Co., Ltd. | 131,072 |
| 1.34.0.0/15 | AS3462 | Data Communication Business Group, | 131,072 |
| 1.184.0.0/15 | AS4538 | China Education and Research Network | 131,072 |
| 1.64.0.0/15 | AS4760 | PCCW Limited | 131,072 |
| 1.34.0.0/16 | AS3462 | Chunghwa Telecom Co.,Ltd. | 65,536 |
| 1.175.0.0/16 | AS3462 | Chunghwa Telecom Co.,Ltd. | 65,536 |
| 1.173.0.0/16 | AS3462 | Chunghwa Telecom Co.,Ltd. | 65,536 |
| 1.174.0.0/16 | AS3462 | Chunghwa Telecom Co.,Ltd. | 65,536 |
| 1.35.0.0/16 | AS3462 | Chunghwa Telecom Co.,Ltd. | 65,536 |
| 1.169.0.0/16 | AS3462 | Chunghwa Telecom Co.,Ltd. | 65,536 |
| 1.166.0.0/16 | AS3462 | Chunghwa Telecom Co.,Ltd. | 65,536 |
| 1.170.0.0/16 | AS3462 | Chunghwa Telecom Co.,Ltd. | 65,536 |
| 1.11.0.0/16 | AS17839 | LG HelloVision Corp. | 65,536 |
| 1.164.0.0/16 | AS3462 | Chunghwa Telecom Co.,Ltd. | 65,536 |
| 1.165.0.0/16 | AS3462 | Chunghwa Telecom Co.,Ltd. | 65,536 |
| 1.50.0.0/16 | AS4134 | CHINANET ningxia province network | 65,536 |
| 1.167.0.0/16 | AS3462 | Chunghwa Telecom Co.,Ltd. | 65,536 |
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 |
| 1.51.86.180 | doalias.site | 1 |
Hosted domains API
Pingable IPs
13,553 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 1.51.231.223 |
5.74ms from Qingdao,
CN
|
|
| 1.51.247.130 |
5.83ms from Qingdao,
CN
|
|
| 1.51.201.26 |
5.70ms from Qingdao,
CN
|
|
| 1.51.248.235 |
5.76ms from Qingdao,
CN
|
|
| 1.51.2.33 |
1.70ms from Beijing,
CN
|
|
| 1.51.240.118 |
5.74ms from Qingdao,
CN
|
|
| 1.51.252.206 |
5.75ms from Qingdao,
CN
|
|
| 1.51.230.6 |
5.81ms from Qingdao,
CN
|
|
| 1.51.242.31 |
5.79ms from Qingdao,
CN
|
|
| 1.51.200.240 |
5.77ms from Qingdao,
CN
|
|
| 1.51.217.31 |
5.76ms from Qingdao,
CN
|
|
| 1.51.215.230 |
5.81ms from Qingdao,
CN
|
|
| 1.51.205.172 |
5.77ms from Qingdao,
CN
|
|
| 1.51.245.28 |
5.75ms from Qingdao,
CN
|
|
| 1.51.244.238 |
5.76ms from Qingdao,
CN
|
|
| 1.51.235.148 |
5.80ms from Qingdao,
CN
|
|
| 1.51.233.79 |
5.79ms from Qingdao,
CN
|
|
| 1.51.222.84 |
5.73ms from Qingdao,
CN
|
|
| 1.51.27.76 |
6.16ms from Shanghai,
CN
|
|
| 1.51.246.68 |
5.80ms from Qingdao,
CN
|
|
| 1.51.220.171 |
5.77ms from Qingdao,
CN
|
|
| 1.51.206.245 |
5.78ms from Qingdao,
CN
|
|
| 1.51.213.181 |
5.75ms from Qingdao,
CN
|
|
| 1.51.221.69 |
5.75ms from Qingdao,
CN
|
|
| 1.51.192.193 |
5.79ms 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 |
|---|---|---|
| 98.23.97.240 |
16.42ms from Chicago,
US
|
|
| 67.146.225.240 |
11.22ms from Dallas,
US
|
|
| 103.76.139.0 |
0.81ms from Delhi,
IN
|
|
| 82.67.144.80 |
1.83ms from Paris,
FR
|
|
| 52.207.189.0 |
0.18ms from Reston,
US
|
|
| 87.226.119.176 |
0.54ms from Riga,
LV
|
|
| 173.224.82.144 |
18.62ms from San Antonio,
US
|
|
| 59.17.194.48 |
1.31ms from Seoul,
KR
|
|
| 121.183.169.80 |
2.55ms from Seoul,
KR
|
|
| 51.84.181.192 |
1.33ms from Tel Aviv,
IL
|
|
| 84.73.114.112 |
4.25ms from Zuerich,
CH
|
|
| 75.75.129.144 |
18.77ms from Ashburn,
US
|
|
| 84.145.41.208 |
6.00ms from Berlin,
DE
|
|
| 78.54.186.160 |
4.62ms from Berlin,
DE
|
|
| 52.25.179.112 |
0.15ms from Boardman,
US
|
|
| 24.8.242.144 |
3.81ms from Denver,
US
|
|
| 39.59.123.32 |
13.43ms from Islamabad,
PK
|
|
| 80.7.13.208 |
6.64ms from London,
GB
|
|
| 104.85.228.176 |
0.58ms from Melbourne,
AU
|
|
| 47.202.203.176 |
5.88ms from Miami,
US
|
|
| 3.98.255.112 |
0.11ms from Montreal,
CA
|
|
| 104.214.95.80 |
0.22ms from San Antonio,
US
|
|
| 45.5.28.0 |
3.43ms from San Pedro Sula,
HN
|
|
| 124.46.234.224 |
5.30ms from Seoul,
KR
|
|
| 112.140.102.224 |
9.98ms 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 Mexico City, MX
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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