AS63351 — ASN-SCF-45 - Southern Caribbean Fiber

AS63351 announces 5 IPv4 prefixes covering 2,560 addresses and 1 IPv6 prefixes.

About this network

ASN-SCF-45 is held by Southern Caribbean Fiber.

What it's used for

• The address space carries a mix of Cogent Communications, LLC (COGENT-A), Southern Caribbean Fiber (SCF-AS63351-SOUTHERN-CARIBBEAN-FIBER), and Global Caribbean Network (GLOBAL-CARIBBEAN-NETWORK) netnames.
• The AS announces 2560 IPv4 addresses across 5 prefixes and 1 IPv6 prefix, with 10 observed neighbours, indicating a transit or interconnection role for the submarine cable infrastructure.
• Traffic from this AS consists of backbone and inter-island connectivity for the Southern Caribbean Fiber submarine cable system, which links 15 islands in the Eastern Caribbean.

Notable

• Registrants include Cogent Communications, LLC, Southern Caribbean Fiber, and Global Caribbean Network, reflecting the multi-stakeholder nature of the submarine cable consortium.
• Southern Caribbean Fiber was formerly known as Antilles Crossing and has been rebranded as part of Digicel's Deep Blue One cable system.
• The inventory includes a large /22 block from Cogent and smaller blocks from other registrants, typical of leased or shared submarine cable address space.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 38.86.161.0/24
• 38.86.162.0/23
• 38.87.192.0/22
• 199.91.162.0/24
• 207.90.254.0/23
• 2606:3180::/32

Upstream networks

• AS174 Cogent Communications, LLC
• AS3257 GTT Communications Inc.

Downstream networks

• AS19246 Antigua Computer Technology Co. Ltd.
• AS262181 Coral Telecom N.V.
• AS11947 Cablenett Limited
• AS36290 The Cable of St. Kitts
• AS394873 DOMSPOT
• AS398821 Government of Montserrat
• AS33392 Dauphin Telecom

Adjacent networks

• AS174 Cogent Communications, LLC
• AS19246 Antigua Computer Technology Co. Ltd.
• AS3257 GTT Communications Inc.
• AS262181 Coral Telecom N.V.
• AS36290 The Cable of St. Kitts
• AS11947 Cablenett Limited
• AS398821 Government of Montserrat
• AS394873 DOMSPOT
• AS33392 Dauphin Telecom

Routing security

• RPKI: 4 valid, 0 invalid and 5 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 33% of announcements registered; 4 route objects.
• Listed in as-sets: AS-GTTCUST, AS-GTTCUST6.