Autonomous system
AS205909 Phystrax-Network Phystrax Ltd
Unclassified RIPE Educational/Research
Summary
Phystrax
education research ipv6
The AS handle PHYSTRAX-NETWORK is held by Phystrax Ltd.
What it's used for
- The address space carries a single IPv6 prefix,
2602:fb87:f40::/42, with no IPv4 addresses announced. - The inventory consists of 1 IPv6 prefix against 1 observed neighbour, indicating a small-scale network with limited peering relationships.
- As an educational and research organization, the traffic from this AS consists of academic and research endpoints.
Notable
- The registry holder is Phystrax Ltd, which aligns with the AS handle and secondary source identification.
- The address inventory is minimal, comprising only a single IPv6 block, which is consistent with a specialized research network rather than a commercial ISP.
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, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS215002 | PRISM.GG Limited | 32 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 0 prefixes · 0 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 1 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS205909- Registry name
- Phystrax-Network
- Registrant
- Phystrax Ltd
- Abuse contact
- abuse@phystrax.com
- Registered
- 2017-05-08
- Last changed
- 2024-06-03
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Phystrax Network
- Network type
- Educational/Research
- Scope
- Global
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
AS-PHYSTRAX- Website
- http://phystrax.com
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 1 valid, 0 with no ROA
- ROAs
- 3 authorising AS205909
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 3 naming AS205909
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: 447 networks and 1,843 prefixes, as published 2026-11-01. 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