Autonomous system
AS37517 CVTS1
Unclassified AFRINIC
Summary
Alou
telecom residential mobile business
The AS handle CVTS1 is operated by Alou, formerly known as Cabo Verde Telecom.
What it's used for
- The address space carries telecommunications services, with netnames like
ORG-CVTS1-AFRINICandCVTELE-CGNT-NET-1indicating the operator's core infrastructure. - A portion of the inventory, specifically the /21 blocks in the 154.203.0.0/16 and 156.232.0.0/16 ranges, is registered to Cloud Innovation Ltd under the netname
ORG-CIL1-AFRINIC, suggesting hosted or leased capacity. - The AS announces 47104 IPv4 addresses across 18 prefixes and 1 IPv6 prefix, while maintaining 104 observed neighbours, a ratio consistent with a national access and transit provider.
Notable
- Registrants are split between CABO VERDE TELECOM, S.A for the majority of prefixes and Cloud Innovation Ltd for six /21 blocks.
- The operator was formerly known as Cabo Verde Telecom before rebranding to Alou.
- The address inventory is a mix of large /19 and /20 blocks owned by the telecom and smaller /21 and /22 blocks, some of which are registered to a third-party cloud 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 3 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.195.91 |
| DE-CIX Lisbon | Lisbon, Portugal | 185.1.131.63 |
| Gigabit Portuguese Internet Exchange Point | Lisbon, Portugal | 193.136.250.223 |
Transit providers
16 upstream, 3 downstream and 26 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 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 18 prefixes · 47.10K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CV | Cabo Verde | 19 |
Registry
Allocation record
- Registry
- AFRINIC
- Registered
- 2012-11-08
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 23% valid · 10 valid, 33 with no ROA
- ROAs
- 6 authorising AS37517
- ASPA
- no ASPA record
- IRR
- 100% registered · 43 of 43 announcements
- Route objects
- 36 naming AS37517
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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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