Autonomous system
AS5650 FRONTIER-FRTR
Residential DROP-listed space ARIN
Summary
Frontier Communications
isp residential eyeball dsl fiber
Frontier Communications (FRONTIER-FRTR) is a large US residential and small-business ISP, running legacy DSL alongside a growing fibre footprint.
What it's used for
- Home internet across many US states: DSL over former incumbent copper plus expanding FTTH fibre.
Notable
- An "eyeball" network: addresses here are US home connections, not servers.
- Frontier grew by acquiring rural and suburban telephone lines (including former Verizon and AT&T territories) and is now investing heavily in fibre after a Chapter 11 restructuring.
Interesting
- Its mix of aging copper DSL and new fibre makes Frontier's footprint unusually uneven, varying block-by-block across its many acquired service areas.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 10 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange Ashburn | Ashburn, United States | 206.126.237.215 |
| Seattle Internet Exchange | Seattle, United States | 2001:504:16::1612 |
| Coresite - Any2 West | Los Angeles, United States | 206.72.211.99 |
| Any2 California | Los Angeles, United States | 206.72.211.99 |
| Equinix Internet Exchange Chicago | Chicago, United States | 208.115.136.146 |
| Equinix Internet Exchange Dallas | Dallas, United States | 206.223.118.230 |
| FL-IX - The Florida Internet Exchange / Community IX - Florida | Miami, United States | 206.41.108.120 |
| Equinix Internet Exchange New York | New York, United States | 198.32.118.193 |
Transit providers
8 upstream, 233 downstream and 264 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1,289 prefixes · 10.65M addresses IPv6 36 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1,325 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS5650- Registry name
- FRONTIER-FRTR
- Registrant
- Verizon Business
- Abuse contact
- abuse@verizon.com
- Registered
- 1995-07-25
- Last changed
- 2026-08-03
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 92% valid · 935 valid, 83 with no ROA 1 RPKI-invalid
- ROAs
- 1,167 authorising AS5650
- ASPA
- no ASPA record
- IRR
- 99% registered · 1,008 of 1,019 announcements 6 other origin
- Route objects
- 2,142 naming AS5650
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
1 DROP match Announced space overlapping the DROP prefix list.
| Announced | DROP entry | Record |
|---|---|---|
| 204.235.252.0/22 | 204.235.252.0/24 | SBL678357 |
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 436 networks and 1,771 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere