Landing Point · GB United Kingdom
| Cable | Status |
|---|---|
| CeltixConnect-1 (CC-1) | Active |
| Emerald Bridge Fibres | Active |
RTT measurements to this landing point from 2026-04-10 through 2026-06-02 — live ICMP round-trip time via RIPE Atlas probes. Recomputed daily. ✓ No anomalies detected in the monitored period.
| Probe | Location | Samples | Avg |
|---|---|---|---|
| #127 | RIPE Atlas | 163 | 53.8 ms |
| #1014473 own probe | Minsk BY | 7 | 40.8 ms |
| #1014589 own probe | Almaty KZ | 7 | 100.1 ms |
| #1014597 own probe | Tbilisi GE | 7 | 67.7 ms |
| #1014969 own probe | Jerusalem IL | 7 | 71.9 ms |
| #1015523 own probe | Moscow RU | 7 | 54.9 ms |
| #1015313 own probe | Sevastopol UA | 6 | 81.3 ms |
Holyhead is a port town located on Holy Island, off the northwest coast of Wales in the United Kingdom, bounded by the Irish Sea to the north. Its position on the Irish Sea coast makes it a natural terminus for submarine cables spanning the short but strategically significant corridor between Wales and Ireland. Two submarine cables land at Holyhead, both connecting the United Kingdom directly to Ireland and forming part of the broader Irish Sea cable network.
The two cables landing at Holyhead — CeltixConnect-1 (CC-1) and Emerald Bridge Fibres — both serve the same bilateral corridor between the United Kingdom and Ireland. Together they represent a degree of route redundancy across this inter-island connection, with each cable providing an independent physical path beneath the Irish Sea. Both cables entered readiness for service in 2012, establishing Holyhead as a focused Irish Sea landing point at that time.
CeltixConnect-1 (CC-1) is a submarine cable approximately 131 km in length that reached readiness for service in 2012. It connects Holyhead in the United Kingdom to Ireland, running beneath the Irish Sea. The cable represents one of two independent links between this Welsh landing point and the Irish network.
Emerald Bridge Fibres is a submarine cable approximately 120 km in length, also entering service in 2012. Like CeltixConnect-1, it connects Holyhead in the United Kingdom to Ireland across the Irish Sea. At 120 km, it is slightly shorter than its companion cable landing at the same point, reflecting a marginally different routing across the same bilateral corridor.
Within the United Kingdom's submarine cable infrastructure — which spans 66 cables across 125 landing points — Holyhead hosts two cables, placing it in the top 95 percent of UK landing points by cable count. Compared to larger UK hubs such as Bude (8 cables), Lowestoft (6 cables), and Blackpool (4 cables), Holyhead is a more focused landing point with a narrower geographic remit, concentrating exclusively on the UK–Ireland corridor rather than serving multiple intercontinental or cross-Channel routes.
Holyhead functions as a dedicated bilateral terminus for the United Kingdom–Ireland submarine cable corridor. Both cables landing here serve the same country pair, meaning the landing point's role is not that of a multi-directional hub but rather a point of concentrated redundancy on a single short-haul inter-island route. The two cables, each arriving independently at Holyhead, provide parallel physical paths across the Irish Sea between Wales and Ireland.
In the broader submarine cable graph of the United Kingdom, Holyhead occupies a distinct niche: while many UK landing points connect outward to continental Europe, North America, or further afield, Holyhead's connections are entirely oriented toward Ireland, reflecting the town's long-established role as a principal maritime gateway between Wales and the island of Ireland.
View actual submarine cable routing from Holyhead, United Kingdom — with backbone nodes, distance calculations, and latency estimates
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