EXA Express

{{short description|Submarine communications cable system}}

{{Infobox Submarine communications cable

| cable_name = EXA Express

| owners = EXA Infrastructure

| landing_points = {{unbulleted list

|1. {{flagicon|CAN}} Halifax, Nova Scotia

|2. {{flagicon|UK}} Brean, UK

|3. {{flagicon|IRE}} Cork, Ireland

}}

| technology = Fiber optics

| design_capacity = 53 Tbps

| length = Ca.4,600km

}}

EXA Express (formerly Hibernia Express) is a submarine communications cable system linking Canada, Ireland, and the UK.{{cite web|title=Hibernia Express transatlantic submarine cable network ready for service|url=http://www.lightwaveonline.com/articles/2015/09/hibernia-express-transatlantic-submarine-cable-network-ready-for-service.html|publisher=Lightwave|access-date=25 April 2018}} EXA Express is now owned by telecommunications provider EXA Infrastructure after their 2021 acquisition of the infrastructure assets of GTT Communications.{{cite web |title=EXA Infrastructure sets sights on growth after acquisition creates Europe's most expansive digital infrastructure platform |url=https://exainfra.net/media-centre/press-releases/exa-infrastructure-sets-sights-on-growth-after-acquisition-creates-europe-s-most-expansive-digital-infrastructure-platform/ |website=EXA Infrastructure |access-date=16 January 2025}} With a latency of 58.95ms, the cable currently provides the lowest latency fiber optic route between the NY4 data center in Secaucus, New Jersey and London.{{cite web|title=Hibernia Express Transatlantic Cable Route Connects New York to London in under 58.95 Milliseconds|url=https://www.businesswire.com/news/home/20150924005286/en/Hibernia-Express-Transatlantic-Cable-Route-Connects-New|publisher=Business Wire|access-date=25 April 2018|language=en}}

The cable was considered operational on September 15, 2015.{{cite web|title=Hibernia Express - Submarine Cable Networks|url=https://www.submarinenetworks.com/systems/trans-atlantic/project-express|publisher=Submarine Cable Networks|access-date=25 April 2018|language=en-gb}} EXA Express spans 4,600 km between its landing stations in Halifax, Nova Scotia; Brean, UK; and Cork, Ireland. The cable is constructed with six fiber pairs, with a design capacity for 53 Tbit/s.

During the planning phases of the cable, Hibernia Networks intended to use Huawei as the contractor for construction.{{cite web|title=Huawei Marine to build Hibernia Altantic's (sic) Project Express|url=http://www.lightwaveonline.com/articles/2012/01/huawei-marine-to-build-hibernia-altantics-project-express-137477213.html|publisher=Lightwave|access-date=25 April 2018}} However, due to security concerns from the potential customers, Huawei was not used and the construction contract went to TE Subcom (owned by TE Connectivity).