asn.dev

Autonomous system

AS31977 FECRWY-1

Unclassified ARIN

IPv4 addresses 1.02K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Florida East Coast Railway

United States of America · AI-generated

railroad business private us

FECRWY-1 is the autonomous system for Florida East Coast Railway LLC.

What it's used for

  • The space carries internal corporate network traffic, evidenced by the netname FLORIDA-EAST-COAST-RAILWAY-NET and the registrant RailAmerica Transportation Corporation.
  • The AS announces a single IPv4 prefix, 74.117.192.0/22, comprising 1024 addresses, with 0 IPv6 prefixes.
  • With only 2 observed neighbours, the low address-to-neighbour ratio indicates a private, non-transit corporate estate rather than a public access or transit network.

Notable

  • The RDAP registrant RailAmerica Transportation Corporation differs from the current registry holder Florida East Coast Railway LLC, reflecting historical ownership changes.
  • Florida East Coast Railway was acquired by Grupo México in 2017, following an earlier acquisition by Fortress Investment Group in 2007.
  • The address inventory consists of a single /22 block, typical for a large private enterprise managing its own internal IP space.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3549Level 3 Parent, LLC216
AS33489Comcast Cable Communications, LLC28

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-29, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 1.02K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS31977
Registry name
FECRWY-1
Registrant
Florida East Coast Railway LLC
Abuse contact
brittany.webb@fecrwy.com
Registered
2004-02-04
Last changed
2021-02-04
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 4 with no ROA
ROAs
0 authorising AS31977
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
1 naming AS31977

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 448 networks and 1,849 prefixes, as published 2026-10-29. 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

Cross-check