Autonomous system
AS210712 GRAPESC
Unclassified RIPE
Summary
ISP Alliance
isp residential czech broadband
The AS handle GRAPESC is held by ISP Alliance a.s.
What it's used for
- The address space carries residential and business broadband traffic, evidenced by reverse DNS entries such as
static.grape.cz,user91-192-34-254.grape.cz,customer82-254.airweb.cz, anduser185-94-6-254.luminet.cz. - The network announces 14,336 IPv4 addresses across 7 prefixes and 6 IPv6 prefixes, while maintaining only 2 observed routing neighbours. This high address-to-neighbour ratio indicates an access network providing last-mile connectivity rather than a transit provider.
- Traffic from this AS consists of end-user internet access for subscribers in Czechia, utilizing static and dynamic IP assignments for residential and small business customers.
Notable
- All registrant data for the announced prefixes consistently lists GRAPESC and ISP Alliance a.s., confirming alignment between the address holders and the AS announcer.
- The inventory includes prefixes registered under different historical netnames (e.g.,
CZ-GRAPESC-20031007,CZ-GRAPESC-20181106), reflecting the accumulation of address space over time under the same operator. - The AS was first seen in routing tables in 2023, indicating a relatively recent entry into the global routing table despite the older registration dates of some underlying prefixes.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 1 downstream and 3 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS47232 | ISP Alliance a.s. | 456 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 14.34K addresses IPv6 6 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CZ | Czechia | 13 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS210712- Registry name
- GRAPESC-ISP
- Registrant
- MNT-GRAPESC
- Abuse contact
- abuse@ispalliance.cz
- Registered
- 2021-09-24
- Last changed
- 2025-09-01
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 8 valid, 0 with no ROA
- ROAs
- 13 authorising AS210712
- ASPA
- no ASPA record
- IRR
- 100% registered · 8 of 8 announcements
- Route objects
- 58 naming AS210712
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: 448 networks and 1,849 prefixes, as published 2026-10-29. 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