Autonomous system

AS266400 Ferenz Networks

Unclassified LACNIC

IPv4 addresses 5.38K 11 prefixes

IPv6 prefixes 11 counted as prefixes, not addresses

Countries 1 mostly BR

Exchanges 9 recorded by PCH

Upstreams 5 5 downstream

Flagged prefixes 0 none

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 9 exchanges in 4 countries, largest first.

Exchange	Location	Their address
IX.br (PTT.br) São Paulo	São Paulo, Brazil	187.16.222.152
DE-CIX Frankfurt	Frankfurt, Germany	80.81.196.41
IX.br (PTT.br) Fortaleza	Fortaleza, Brazil	45.68.72.103
AMS-IX Amsterdam	Amsterdam, Netherlands	80.249.208.142
IX.br (PTT.br) Porto Alegre	Porto Alegre, Brazil	177.52.39.13
IX.br (PTT.br) Brasília	Brasília, Brazil	45.184.144.118
DE-CIX New York	New York, United States	206.82.104.98
IX.br (PTT.br) Curitiba	Curitiba, Brazil	45.184.146.235

All 9 exchanges →

Transit providers

5 upstream, 5 downstream and 21 adjacent networks observed; most-used upstreams first.

AS	Network	Paths seen
AS3356	Level 3 Parent, LLC	1,705
AS6939	Hurricane Electric LLC	434
AS16735	ALGAR TELECOM S/A	75
AS24482	SG.GS	44
AS37721	Virtual Technologies & Solutions	44

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, 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 11 prefixes · 5.38K addresses IPv6 11 prefixes

Country	Name	Prefixes
BR	Brazil	22

Registry

Allocation record

LACNIC · via Atlas (registry data)

Registry: LACNIC
Registered: 2016-12-06
Allocation: allocated

Routing security

RPKI and IRR

Full detail

RPKI: 100% valid · 44 valid, 0 with no ROA
ROAs: 12 authorising AS266400
ASPA: no ASPA record
IRR: 100% registered · 44 of 44 announcements
Route objects: 104 naming AS266400

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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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