AS19901 — BRSPD-PUBLIC

Network type: residential

AS19901 announces 536 IPv4 prefixes covering 3,039,744 addresses and 43 IPv6 prefixes.

About this network

BRSPD-PUBLIC is the public AS for Brightspeed, a US residential broadband provider.

What it's used for

• The address space carries residential customer traffic, evidenced by reverse DNS entries like dhcp-9-138-128-0.gobrightspeed.net and legacy qwest.net/centurylink.net hostnames.
• With 3,054,592 IPv4 addresses announced across 588 prefixes and only 6 observed neighbours, the high address-to-neighbour ratio indicates an access/eyeball network rather than a transit provider.

Notable

• Registrants include both Brightspeed and CenturyLink Communications, LLC, reflecting the company's history of acquiring Qwest and CenturyLink assets.
• The inventory includes large legacy blocks such as 9.138.0.0/15 and 9.244.0.0/15 registered to Brightspeed, alongside numerous /16 blocks still registered to CenturyLink Communications, LLC.
• The address inventory is finely subdivided into 588 IPv4 prefixes and 43 IPv6 prefixes, consistent with a large-scale residential deployment.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 9.134.0.0/21
• 9.134.32.0/20
• 9.134.64.0/19
• 9.134.96.0/21
• 9.134.128.0/21
• 9.134.136.0/22
• 9.134.160.0/19
• 9.134.192.0/21
• 9.134.200.0/22
• 9.134.224.0/19
• 9.138.0.0/15
• 9.144.0.0/20
• 9.144.18.0/23
• 9.144.20.0/22
• 9.144.24.0/21
• 9.144.32.0/19
• 9.144.64.0/18
• 9.144.128.0/19
• 9.144.160.0/20
• 9.144.176.0/21
• 9.144.192.0/22
• 9.144.216.0/23
• 9.144.218.0/24
• 9.144.220.0/22
• 9.144.224.0/20
• 9.144.240.0/21
• 9.144.248.0/24
• 9.144.250.0/24
• 9.144.252.0/22
• 9.195.0.0/21
• 9.195.8.0/22
• 9.195.32.0/19
• 9.195.64.0/18
• 9.195.128.0/19
• 9.195.160.0/21
• 9.195.168.0/22
• 9.195.192.0/21
• 9.195.224.0/19
• 9.196.0.0/20
• 9.196.96.0/19
• 9.196.128.0/20
• 9.244.0.0/15
• 63.67.172.0/23
• 63.162.200.0/23
• 63.162.202.0/24
• 63.162.204.0/22
• 63.173.118.0/23
• 64.40.65.0/24
• 64.40.66.0/24
• 64.40.68.0/22
• 64.40.80.0/21
• 65.12.0.0/19
• 65.12.64.0/18
• 65.12.128.0/17
• 65.40.79.0/24
• 65.40.80.0/22
• 65.40.88.0/21
• 65.40.104.0/22
• 65.40.110.0/24
• 65.40.130.0/24
• 65.40.139.0/24
• 65.40.141.0/24
• 65.40.160.0/20
• 65.40.196.0/23
• 65.40.201.0/24
• 65.40.203.0/24
• 65.40.212.0/22
• 65.40.216.0/23
• 65.40.232.0/22
• 65.40.249.0/24
• 65.40.251.0/24
• 65.41.36.0/22
• 65.41.40.0/22
• 65.41.44.0/24
• 65.41.47.0/24
• 65.41.59.0/24
• 65.41.106.0/24
• 65.41.160.0/21
• 65.41.174.0/23
• 65.41.176.0/20
• 65.41.197.0/24
• 65.41.203.0/24
• 65.41.254.0/24
• 65.131.208.0/20
• 65.131.224.0/20
• 65.162.202.0/24
• 65.164.18.0/23
• 65.173.82.0/24
• 65.173.91.0/24
• 65.173.92.0/22
• 65.174.163.0/24
• 66.79.2.0/23
• 66.79.6.0/24
• 66.79.14.0/24
• 66.79.60.0/23
• 66.79.86.0/23
• 66.249.58.0/23
• 67.6.0.0/16
• 67.7.0.0/19
• 67.7.96.0/19

and 479 more.

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS12129 123.Net, Inc.
• AS13335 Cloudflare, Inc.
• AS36086 Telx
• AS49915 Megaport (UK) Limited
• AS20205 Amplex Electric, Inc.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS12129 123.Net, Inc.
• AS13335 Cloudflare, Inc.
• AS36086 Telx
• AS49915 Megaport (UK) Limited
• AS20205 Amplex Electric, Inc.

Internet exchanges

• Detroit Internet Exchange — Detroit, United States
• Kansas City Internet Exchange — Kansas City, United States