Autonomous system
AS42845 BRETAGNETELECOM
Residential ARIN
Summary
BT-BLUE
isp residential cable dsl
BRETAGNETELECOM is operated by BT-BLUE (BLUE SAS).
What it's used for
- The address space carries residential and business broadband traffic, evidenced by netnames such as
FR-BRETAGNETELECOM-20120315andFR-BRETAGNETELECOM-20070424registered to BLUE SAS. - The AS announces 16,896 IPv4 addresses across 14 prefixes and 1 IPv6 prefix, with 58 observed neighbours, indicating a regional access provider role.
- Traffic consists of subscriber eyeballs for cable and DSL services in the Brittany region of France.
Notable
- All registrants align with the announcer, consistently listing BLUE SAS as the holder for the largest prefixes.
- The inventory is composed of multiple /21 and /22 blocks, reflecting a fragmented but cohesive regional footprint.
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 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| France-IX Paris | Paris, France | 37.49.237.86 |
| BreizhIX | Rennes, France | 185.1.89.20 |
Transit providers
13 upstream, 7 downstream and 37 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 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 14 prefixes · 16.90K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| FR | France | 15 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS42845- Registry name
- Bretagnetelecom
- Registrant
- nicolasboittin-mnt
- Abuse contact
- support@bretagnetelecom.com
- Registered
- 2007-04-25
- Last changed
- 2026-09-10
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 98% valid · 42 valid, 1 with no ROA
- ROAs
- 14 authorising AS42845
- ASPA
- no ASPA record
- IRR
- 98% registered · 42 of 43 announcements
- Route objects
- 42 naming AS42845
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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