Autonomous System
AS203 Level 3 Parent, LLC
ISPActiveUnited StatesARIN
AS203 (CENTURYLINK-LEGACY-LVLT-203) is an ISP network operated by Level 3 Parent, LLC in United States, registered with ARIN. It has 146 IPv4 prefixes with 333,312 addresses, which makes it the 882nd largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses333,312in 146 prefixes
IPv6 prefixes0none
Size rank#882of 82,200 active ASNs
Details
OrganizationLevel 3 Parent, LLC
AS nameCENTURYLINK-LEGACY-LVLT-203
Websitelevel3.com
Country United States (US)
Network typeISP
RegistryARIN
Abuse contactabuse@level3.com
Registered2002-06-05
Last updated2019-12-04
IPv4 prefixes
146 prefixes · 333,312 addresses| Network | Addresses | First – last address |
|---|---|---|
| 149.21.0.0/16 | 65,536 | 149.21.0.0 – 149.21.255.255 |
| 170.46.0.0/16 | 65,536 | 170.46.0.0 – 170.46.255.255 |
| 143.112.0.0/17 | 32,768 | 143.112.0.0 – 143.112.127.255 |
| 143.112.128.0/18 | 16,384 | 143.112.128.0 – 143.112.191.255 |
| 206.203.64.0/18 | 16,384 | 206.203.64.0 – 206.203.127.255 |
| 143.112.192.0/19 | 8,192 | 143.112.192.0 – 143.112.223.255 |
| 143.112.224.0/19 | 8,192 | 143.112.224.0 – 143.112.255.255 |
| 156.42.0.0/19 | 8,192 | 156.42.0.0 – 156.42.31.255 |
| 156.42.32.0/19 | 8,192 | 156.42.32.0 – 156.42.63.255 |
| 156.42.64.0/19 | 8,192 | 156.42.64.0 – 156.42.95.255 |
| 156.42.96.0/19 | 8,192 | 156.42.96.0 – 156.42.127.255 |
| 156.42.128.0/19 | 8,192 | 156.42.128.0 – 156.42.159.255 |
| 156.42.160.0/19 | 8,192 | 156.42.160.0 – 156.42.191.255 |
| 156.42.192.0/19 | 8,192 | 156.42.192.0 – 156.42.223.255 |
| 156.42.224.0/19 | 8,192 | 156.42.224.0 – 156.42.255.255 |
| 161.209.192.0/19 | 8,192 | 161.209.192.0 – 161.209.223.255 |
| 161.209.96.0/20 | 4,096 | 161.209.96.0 – 161.209.111.255 |
| 216.235.200.0/21 | 2,048 | 216.235.200.0 – 216.235.207.255 |
| 63.128.0.0/22 | 1,024 | 63.128.0.0 – 63.128.3.255 |
| 63.128.8.0/22 | 1,024 | 63.128.8.0 – 63.128.11.255 |
| 143.112.68.0/22 | 1,024 | 143.112.68.0 – 143.112.71.255 |
| 143.112.128.0/22 | 1,024 | 143.112.128.0 – 143.112.131.255 |
| 143.112.144.0/22 | 1,024 | 143.112.144.0 – 143.112.147.255 |
| 205.139.104.0/22 | 1,024 | 205.139.104.0 – 205.139.107.255 |
| 209.67.132.0/22 | 1,024 | 209.67.132.0 – 209.67.135.255 |
149.21.0.0/16 170.46.0.0/16 143.112.0.0/17 143.112.128.0/18 206.203.64.0/18 143.112.192.0/19 143.112.224.0/19 156.42.0.0/19 156.42.32.0/19 156.42.64.0/19 156.42.96.0/19 156.42.128.0/19 156.42.160.0/19 156.42.192.0/19 156.42.224.0/19 161.209.192.0/19 161.209.96.0/20 216.235.200.0/21 63.128.0.0/22 63.128.8.0/22 143.112.68.0/22 143.112.128.0/22 143.112.144.0/22 205.139.104.0/22 209.67.132.0/22
The 25 largest of 146. The API and the database have all of them.
IPv6 prefixes
No IPv6 prefixes.
Query AS203 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS203&key=YOUR_API_KEY"Any address in its prefixes resolves to AS203, with or without a key:
curl "https://api.ipapi.is/?q=149.21.0.1"Other networks of Level 3 Parent, LLC
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