asn.dev

Autonomous system

AS397326 SFN-ASN

Unclassified ARIN NSP

IPv4 addresses 512 2 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 6 recorded by PCH
Upstreams 7 1 downstream
Flagged prefixes 0 none

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 6 exchanges in 1 country, largest first.

ExchangeLocationTheir address
Seattle Internet ExchangeSeattle, United States206.81.80.130
Midwest Internet Cooperative ExchangeMinneapolis, United States206.108.255.135
Interconnection eXchange DenverDenver, United States206.53.175.220
Kansas City Internet ExchangeKansas City, United States206.51.7.106
Quad Cities Internet ExchangeDavenport, United States206.83.43.3
Milwaukee Internet ExchangeMilwaukee, United States204.107.122.142

Transit providers

7 upstream, 1 downstream and 12 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS10242US Internet Corp89
AS32621Twin City VoIP, Inc.36
AS6939Hurricane Electric LLC34
AS24482SG.GS3
AS394256Tech Futures Interactive Inc.3
AS3130RGnet OU2
AS9002RETN Limited2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, 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 2 prefixes · 512 addresses IPv6 1 prefixes

CountryNamePrefixes
USUnited States of America3

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS397326
Registry name
SFN-ASN
Registrant
South Front Networks
Abuse contact
jayhanke@southfront.io
Registered
2019-02-14
Last changed
2019-02-14
Allocation
assigned

Declared

PeeringDB profile

self-reported
Name
South Front Networks
Network type
NSP
Scope
North America
Traffic ratio
Heavy Outbound
Peering policy
Open
IRR as-set
AS-SFN-CUST
Present at
10 exchanges
Facilities
17 facilities
Website
https://www.southfront.io

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 3 valid, 0 with no ROA
ROAs
3 authorising AS397326
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
3 naming AS397326

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: 447 networks and 1,845 prefixes, as published 2026-10-31. 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