asn.dev

Autonomous system

AS52999 START TELECOM LTDA

Unclassified ARIN

IPv4 addresses 9.22K 4 prefixes
IPv6 prefixes 12 counted as prefixes, not addresses
Countries 1 mostly BR
Exchanges 3 recorded by PCH
Upstreams 6 11 downstream
Flagged prefixes 0 none

Summary

Start Networks

Brazil · AI-generated

isp residential brazil cgnat

START TELECOM LTDA is the AS handle for Start Networks S/A, a regional internet service provider operating in Brazil.

What it's used for

  • The address space carries residential and dedicated customer traffic, evidenced by reverse DNS entries such as cgnat.start.psi.br and gw.ded.start.psi.br.
  • The network announces 9,216 IPv4 addresses across 4 prefixes and 12 IPv6 prefixes, while maintaining 37 observed neighbours; this ratio of modest address inventory to a significant number of peering partners indicates a regional access provider rather than a transit backbone.
  • Traffic from this AS consists of subscriber eyeballs and dedicated gateway connections for end-users in the Brazilian market.

Notable

  • All four largest IPv4 prefixes list START NETWORKS S/A as the registrant, which aligns with the AS holder identity.
  • The address inventory is composed of four distinct IPv4 blocks and a fragmented set of ten IPv6 prefixes, all under the 2804:508::/33 umbrella.

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

Recorded at 3 exchanges in 1 country, largest first.

ExchangeLocationTheir address
IX.br (PTT.br) São PauloSão Paulo, Brazil187.16.222.127
IX.br (PTT.br) FortalezaFortaleza, Brazil45.68.73.90
IX.br (PTT.br) SalvadorSalvador, Brazil200.219.145.40

Transit providers

6 upstream, 11 downstream and 29 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS28186ITS TELECOMUNICACOES LTDA573
AS14840BR.Digital Telecom297
AS6939Hurricane Electric LLC100
AS24482SG.GS4
AS35280F5 Networks SARL2
AS37721Virtual Technologies & Solutions2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 4 prefixes · 9.22K addresses IPv6 12 prefixes

CountryNamePrefixes
BRBrazil16

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
52999
Registry name
ASN52999
Registrant
START NETWORKS S/A
Abuse contact
Leonardo da Costa Reis
Registered
2011-06-06
Last changed
2026-08-10
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 18 valid, 0 with no ROA
ROAs
5 authorising AS52999
ASPA
3 declared providers
IRR
100% registered · 18 of 18 announcements
Route objects
75 naming AS52999

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: 442 networks and 1,772 prefixes, as published 2026-10-15. 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