Autonomous system
AS4455 BSO
Unclassified RIPE
Summary
BSO (BSO IX Reach Ltd)
transit legacy
BSO is BSO, a global network operator best known for low-latency connectivity for financial markets. The registered entity is BSO IX Reach Ltd, reflecting BSO's acquisition of the UK carrier IX Reach.
What it's used for
- Wholesale connectivity: point-to-point circuits, cloud on-ramps, and remote peering into internet exchanges across Europe, North America, Asia, the Middle East, and Africa.
- Low-latency routes between financial trading venues, the business BSO built itself on.
Notable
- Carrier and transit address space rather than eyeball space: IPs here are network infrastructure and wholesale customers, not home broadband.
- Remote peering is a large part of the IX Reach side of the business. It lets a network appear at an internet exchange where it has no physical presence, so traffic seen at an exchange via this ASN may well originate somewhere else entirely.
Interesting
- BSO acquired IX Reach in 2019 and later folded its core network in, combining a financial-markets latency specialist with an exchange-connectivity and remote-peering 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
Internet exchanges
Recorded at 37 exchanges in 17 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.194.132 |
| LINX LON1 | London, United Kingdom | 195.66.224.217 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.208.131 |
| Neutral Internet Exchange | Amsterdam, Netherlands | 193.239.117.49 |
| France-IX Paris | Paris, France | 37.49.236.192 |
| Equinix Internet Exchange Singapore | Singapore, Singapore | 27.111.230.72 |
| Equinix Internet Exchange Ashburn | Ashburn, United States | 206.126.237.43 |
| Seattle Internet Exchange | Seattle, United States | 206.81.81.111 |
Transit providers
55 upstream, 78 downstream and 203 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 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 77 prefixes · 54.78K addresses IPv6 70 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 147 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS4455- Registry name
- BSO
- Registrant
- BSOCOM-MNT
- Abuse contact
- abuse@bsonetwork.com
- Registered
- 2021-04-01
- Last changed
- 2025-10-24
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 79% valid · 48 valid, 13 with no ROA
- ROAs
- 18 authorising AS4455
- ASPA
- no ASPA record
- IRR
- 95% registered · 58 of 61 announcements 1 other origin
- Route objects
- 44 naming AS4455
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 1,845 prefixes, as published 2026-10-31. 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