asn.dev

Autonomous system

AS18683 MWFN

Unclassified ARIN

IPv4 addresses 12.03K 5 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 1 recorded by PCH
Upstreams 2 18 downstream
Flagged prefixes 0 none

Summary

Midwest Fiber Networks

United States of America · AI-generated

isp residential fiber midwest

The AS handle MWFN is operated by Midwest Fiber Networks, LLC.

What it's used for

  • The address space carries residential and business fiber internet services, evidenced by reverse DNS entries pointing to rev.midwestfibernetworks.com across multiple prefixes.
  • The network announces 12,032 IPv4 addresses and 1 IPv6 prefix, with 22 observed routing neighbours, indicating a regional access provider rather than a transit carrier.

Notable

  • Registrants for the majority of prefixes align with the announcer, specifically Midwest Fiber Networks, LLC for netnames MFNL-1, MWFN-1, and MWFN-3.
  • Two prefixes, 204.141.16.0/22 and 165.254.216.0/23, are registered to NTT America, Inc.; VIPAR under netnames NTTA-204-141 and NTTA-165-254, suggesting leased or inherited address space from a larger carrier.
  • The inventory consists of five IPv4 prefixes of varying sizes, ranging from a /19 to a /24, alongside a single /32 IPv6 block.

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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
Equinix Internet Exchange ChicagoChicago, United States208.115.136.250

Transit providers

2 upstream, 18 downstream and 27 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS2914NTT America, Inc.262
AS6939Hurricane Electric LLC62

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 5 prefixes · 12.03K addresses IPv6 1 prefixes

CountryNamePrefixes
USUnited States of America6

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS18683
Registry name
MWFN
Registrant
Midwest Fiber Networks, LLC
Abuse contact
noc@midwestfibernetworks.com
Registered
2007-08-02
Last changed
2016-04-29
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
50% valid · 3 valid, 3 with no ROA
ROAs
3 authorising AS18683
ASPA
no ASPA record
IRR
100% registered · 6 of 6 announcements
Route objects
8 naming AS18683

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: 442 networks and 1,771 prefixes, as published 2026-10-15. 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