Autonomous system
AS28204 Keraxweb Servicos de Int. e Internet Ltda
Unclassified AFRINIC
Summary
Keraxweb
isp brazil residential
AS28204 is operated by Keraxweb Serviços de Int. e Internet Ltda.
What it's used for
- The address space carries Keraxweb's own infrastructure, with reverse DNS pointing to
keraxweb.net.br. - The AS announces 4096 IPv4 addresses across 1 prefix and 1 IPv6 prefix, while maintaining 27 observed neighbours. This ratio of a small address block against a moderate number of peers suggests a regional access or transit provider rather than a large-scale eyeball network.
Notable
- The RDAP registrant for the announced prefix
189.91.48.0/20matches the AS holder, Keraxweb Serviços de Int. e Internet Ltda. - The inventory consists of a single contiguous IPv4 /20 block and a single IPv6 /32, indicating a compact and unified address estate.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) São Paulo | São Paulo, Brazil | 187.16.209.16 |
Transit providers
7 upstream, 1 downstream and 12 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 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 4.10K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 2 |
Registry
Allocation record
- Registry
- AFRINIC
- Handle
28204- Registry name
- ASN28204
- Registrant
- Keraxweb Serviços de Int. e Internet Ltda
- Abuse contact
- Thiago Maggi Quartiero
- Registered
- 2008-04-11
- Last changed
- 2019-02-14
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 15 valid, 0 with no ROA
- ROAs
- 2 authorising AS28204
- ASPA
- no ASPA record
- IRR
- 100% registered · 15 of 15 announcements
- Route objects
- 2 naming AS28204
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 1,783 prefixes, as published 2026-10-17. 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