AS12119 — I3BROADBAND

AS12119 announces 31 IPv4 prefixes covering 141,056 addresses and 1 IPv6 prefixes.

About this network

i3 Broadband is a fiber-to-the-home provider serving central Illinois and the St. Louis metro area, previously trading as iTV-3.

What it's used for

• Residential and small-business fiber internet, TV and phone across a set of mid-sized Midwestern cities.

Notable

• The reverse DNS names the town outright. Sampled addresses answer as fiber-255.Peoria.IL.i3broadband.com, fiber-0.Galesburg.IL.i3broadband.com, fiber-255.Rockford.IL.i3broadband.com and fiber-0.SaintCharles.MO.i3broadband.com, so the footprint is legible straight from the hostnames rather than having to be inferred from the prefixes.
• 144,000 addresses across 58 prefixes against only 5 observed BGP neighbours. That is the classic access-network shape: a lot of subscriber space reached through a handful of upstreams, with no interest in being a transit provider.

Interesting

• Nearly every announced block is registered under the single netname IL-494, which is unusually consistent for a network assembled city by city. i3 builds its own fiber into markets an incumbent already serves, so the plant grows one town at a time while the addressing stays under one roof.

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

Announced prefixes

• 23.249.32.0/21
• 23.249.40.0/23
• 23.249.44.0/22
• 66.94.192.0/23
• 66.94.196.0/24
• 66.94.208.0/24
• 66.94.211.0/24
• 131.103.138.0/23
• 134.49.0.0/19
• 140.141.128.0/17
• 140.177.64.0/18
• 140.177.128.0/17
• 142.204.64.0/19
• 142.204.96.0/20
• 165.254.182.0/23
• 165.254.184.0/23
• 167.254.48.0/20
• 169.197.144.0/22
• 192.80.96.0/20
• 198.88.120.0/23
• 198.88.216.0/24
• 204.42.16.0/20
• 204.141.60.0/22
• 206.222.58.0/23
• 207.152.68.0/22
• 207.152.102.0/23
• 209.128.192.0/19
• 216.169.0.0/20
• 216.169.16.0/21
• 216.169.28.0/24
• 216.169.30.0/23
• 2606:a880::/32

Upstream networks

• AS6939 Hurricane Electric LLC
• AS3356 Level 3 Parent, LLC
• AS2914 NTT America, Inc.

Downstream networks

• AS32845 Tel-Star Communications, Inc
• AS401803 Peoria Park District

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS3356 Level 3 Parent, LLC
• AS2914 NTT America, Inc.
• AS32845 Tel-Star Communications, Inc
• AS401803 Peoria Park District

Routing security

• RPKI: 83 valid, 0 invalid and 7 not-found announcements; 26 ROAs.
• ASPA: none published.
• IRR: 49% of announcements registered; 83 route objects.
• Listed in as-sets: AS-HURRICANE, AS-HURRICANEV6, AS-I3-BGP-CUSTOMERS, AS-TRANSROUTE-SPEC, AS12119:AS-ALL, AS2914:AS-US-V6.