Autonomous system
AS28649 Desktop Sigmanet Comunicacao Multimidia SA
Residential APNIC
Summary
Desktop Sigmanet
residential isp cable dsl
AS28649 is operated by Desktop Sigmanet Comunicação Multimídia SA.
What it's used for
- The address space carries residential broadband traffic, evidenced by reverse DNS records such as
179-125-136-0.dynamic.desktop.com.brand186-249-151-254.shared.desktop.com.br. - The AS announces 147,456 IPv4 addresses across 62 prefixes and 109 IPv6 prefixes, while maintaining 68 observed neighbours, a ratio consistent with a regional access provider.
Notable
- All available RDAP registrants match the AS holder, identified as Desktop Sigmanet Comunicação Multimídia SA.
- The inventory consists of multiple /19 and /20 blocks, including 179.125.128.0/19 and 186.249.128.0/19, supporting a large-scale subscriber base.
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
Internet exchanges
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) São Paulo | São Paulo, Brazil | 187.16.208.184 |
| IX.br (PTT.br) Campinas | Campinas, Brazil | 200.192.108.4 |
Transit providers
11 upstream, 25 downstream and 71 adjacent networks observed; most-used upstreams first.
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
IPv4 62 prefixes · 147K addresses IPv6 109 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 171 |
Registry
Allocation record
- Registry
- APNIC
- Handle
28649- Registry name
- ASN28649
- Registrant
- Desktop Sigmanet Comunicação Multimídia SA
- Abuse contact
- Desktop S/A Canal de Segurança
- Registered
- 2006-06-07
- Last changed
- 2023-01-06
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 345 valid, 0 with no ROA
- ROAs
- 54 authorising AS28649
- ASPA
- no ASPA record
- IRR
- 100% registered · 345 of 345 announcements
- Route objects
- 108 naming AS28649
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: 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