asn.dev

Autonomous system

AS271128 FAST WEB

Residential APNIC

IPv4 addresses 1.02K 1 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly BR
Exchanges 3 recorded by PCH
Upstreams 7 1 downstream
Flagged prefixes 0 none

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 3 exchanges in 1 country, largest first.

ExchangeLocationTheir address
IX.br (PTT.br) São PauloSão Paulo, Brazil187.16.213.245
IX.br (PTT.br) FortalezaFortaleza, Brazil45.68.73.102
IX.br (PTT.br) SalvadorSalvador, Brazil200.219.145.58

Transit providers

7 upstream, 1 downstream and 13 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6939Hurricane Electric LLC81
AS52872Voafibra Comunicacao41
AS52873Softdados Telecomunicacoes24
AS265019NEX TELECOM LTDA ME9
AS24482SG.GS4
AS37721Virtual Technologies & Solutions3
AS35280F5 Networks SARL2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, 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 2 prefixes

CountryNamePrefixes
BRBrazil3

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
271128
Registry name
ASN271128
Registrant
FAST WEB
Abuse contact
Jackson da silva
Registered
2020-08-06
Last changed
2020-08-06
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 6 valid, 0 with no ROA
ROAs
2 authorising AS271128
ASPA
no ASPA record
IRR
100% registered · 6 of 6 announcements
Route objects
11 naming AS271128

Reputation

Classification and threat

Residential Fixed-line consumer ISP. Addresses here are homes.

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 1,782 prefixes, as published 2026-10-16. 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