asn.dev

Autonomous system

AS19197 STEFANINI-INC

Unclassified ARIN

IPv4 addresses 4.35K 12 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 12 0 downstream
Flagged prefixes 0 none

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

12 upstream, 0 downstream and 12 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS13335Cloudflare, Inc.260
AS2687AT&T Enterprises, LLC173
AS3356Level 3 Parent, LLC169
AS5606GTS Telecom SRL116
AS4230CLARO S.A.112
AS5483Magyar Telekom Plc.62
AS31252StarNet Solutii SRL59
AS31242P4 Sp. z o.o.43

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

Shape and geography

IPv4 12 prefixes · 4.35K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America12

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS19197
Registry name
STEFANINI-INC
Registrant
Stefanini, Inc.
Abuse contact
bruno.monteiro@stefanini.com
Registered
2000-12-04
Last changed
2018-07-25
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 17 valid, 0 with no ROA
ROAs
33 authorising AS19197
ASPA
no ASPA record
IRR
100% registered · 17 of 17 announcements
Route objects
24 naming AS19197

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: 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

Cross-check