asn.dev

Autonomous system

AS26599 TELEFONICA BRASIL S.A

Residential APNIC

IPv4 addresses 10.79M 365 prefixes
IPv6 prefixes 111 counted as prefixes, not addresses
Countries 1 mostly BR
Exchanges 0 recorded by PCH
Upstreams 1 1 downstream
Flagged prefixes 0 none

Summary

Telefônica Brasil (Vivo Fibra)

Brazil · AI-generated

isp residential eyeball fiber dsl

Telefônica Brasil (AS26599) — the fixed-network ASN of Vivo, Brazil's largest telecom operator, carrying its Vivo Fibra home broadband.

What it's used for

  • Fibre and DSL home internet for tens of millions of Brazilian households.

Notable

  • A very large "eyeball" network: addresses here are Brazilian home connections, commonly behind carrier-grade NAT, not servers.
  • This is the fixed broadband ASN, distinct from Vivo's mobile network (AS27699).

Interesting

  • Vivo is the consumer brand of Telefônica Brasil, making AS26599 one of the most frequently seen residential-ISP origins in Brazilian traffic.

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

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 1 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS10429TELEFONICA BRASIL S.A35,151

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, 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 365 prefixes · 10.79M addresses IPv6 111 prefixes

CountryNamePrefixes
BRBrazil476

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
26599
Registry name
ASN26599
Registrant
TELEFÔNICA BRASIL S.A
Abuse contact
CSIRT TELEFONICA BR
Registered
2002-09-16
Last changed
2019-07-30
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
TELEFÔNICA BRASIL AS26599
Also known as
Vivo
Scope
Not Disclosed
Traffic ratio
Not Disclosed
Peering policy
Open
IRR as-set
AS-TBSA
Website
http://www.telefonica.com.br

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
0% valid · 0 valid, 724 with no ROA
ROAs
0 authorising AS26599
ASPA
no ASPA record
IRR
90% registered · 653 of 724 announcements 1 other origin
Route objects
110 naming AS26599

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: 447 networks and 1,852 prefixes, as published 2026-10-27. 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