Autonomous system
AS13357 Ampernet Telecomunicacoes Ltda
Hosting APNIC
Summary
Ampernet Telecomunicacoes
isp telecom business
The netname is the bare number 768, and every reverse name is the address written backwards.
What it's used for
- A Brazilian internet provider. 2,048 addresses across four IPv4 prefixes, twenty-seven observed BGP neighbours, and the IPv6 block
2804:7acc::/32.
Notable
- All four blocks carry the netname
768, with no letters in it at all. - Every sampled address resolved, twelve out of twelve, to names like
0.101.192.200.dynamic.ampernet.com.br. - The addresses ending in 0 and in 255 both answer, and both are labelled dynamic.
- The registrant is written with an accent that the autonomous system's own holder record drops.
Interesting
- A netname made only of digits is what a registry produces when the field is filled from an internal record number rather than a name. It identifies the block to the people who allocated it and to nobody else.
- The reverse names are the address in the order used by the lookup itself, with a domain appended. Whoever generated the zone worked from the query string rather than the address, which is less work and produces names that read backwards to anyone else.
- Twelve of twelve answering, including network and broadcast addresses, is a zone filled in completely by machine. Nothing was carved out for a router or a server.
- Twenty-seven neighbours against two thousand addresses is a provider that peers far more widely than its own footprint would suggest.
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 | 187.16.216.197 |
| IX.br (PTT.br) Curitiba | Curitiba, Brazil | 45.184.146.59 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 2.05K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 5 |
Registry
Allocation record
- Registry
- APNIC
- Handle
13357- Registry name
- ASN13357
- Registrant
- Ampernet Telecomunicações Ltda
- Abuse contact
- thiago@ampernet.com.br
- Registered
- 1999-11-18
- Last changed
- 2022-01-10
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 13 valid, 0 with no ROA
- ROAs
- 2 authorising AS13357
- ASPA
- no ASPA record
- IRR
- 100% registered · 13 of 13 announcements
- Route objects
- 4 naming AS13357
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
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 1,778 prefixes, as published 2026-10-20. 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