asn.dev

Autonomous system

AS208261 POLHOSTER-AS POLHOSTER.COM

Unclassified RIPE

IPv4 addresses 512 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly CR
Exchanges 2 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Zefirius SRL

Costa Rica · AI-generated

security outsourcing business

POLHOSTER-AS is operated by Zefirius SRL.

What it's used for

  • The address space carries a single IPv4 prefix, 161.104.78.0/23, with the netname CR-ZEFIRIUS-19920624 and registrant Zefirius SRL.
  • The network announces 512 IPv4 addresses and 0 IPv6 prefixes, with 1 observed neighbour, indicating a small-scale business or service provider footprint rather than a large access or transit network.
  • Traffic from this AS consists of cybersecurity, DDoS protection, and network outsourcing services provided by Zefirius SRL to clients in Costa Rica.

Notable

  • The RDAP registrant Zefirius SRL matches the AS holder and the netname, confirming consistent ownership.
  • Zefirius SRL is a Costa Rican company specializing in cybersecurity and network outsourcing, operating from San José.
  • The inventory consists of a single /23 block, representing a compact address estate typical of a specialized service provider.

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 2 exchanges in 1 country, largest first.

ExchangeLocationTheir address
France-IX ParisParis, France37.49.237.237
France-IX MarseilleMarseille, France37.49.232.102

Transit providers

1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS13335Cloudflare, Inc.64

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, 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 1 prefixes · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
CRCosta Rica1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS208261
Registry name
zef
Registrant
Zefirius SRL
Abuse contact
compliance@zefirius.net
Registered
2026-03-04
Last changed
2026-03-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS208261
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS208261

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: 446 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