Landing Point · US United States
| Cable | Status |
|---|---|
| Nome to Homer Express (NTHE) | Planned |
| TERRA SW | Active |
RTT measurements to this landing point from 2026-04-21 through 2026-05-18 — live ICMP round-trip time via RIPE Atlas probes. Recomputed daily. ✓ No anomalies detected in the monitored period.
| Probe | Location | Samples | Avg |
|---|---|---|---|
| #1014473 own probe | Minsk BY | 3 | 184.0 ms |
| #1014589 own probe | Almaty KZ | 3 | 206.9 ms |
| #1014597 own probe | Tbilisi GE | 3 | 168.5 ms |
| #1014969 own probe | Jerusalem IL | 3 | 160.5 ms |
| #1015523 own probe | Moscow RU | 3 | 132.6 ms |
| #1015313 own probe | Sevastopol UA | 1 | 164.0 ms |
| #1015563 own probe | Saint Petersburg RU | 1 | 149.9 ms |
Williamsport, AK is a submarine cable landing point located in Alaska, United States. Two submarine cables land at this location, connecting it to other points within the United States. Both cables operate entirely within domestic U.S. waters, meaning Williamsport, AK serves a national rather than intercontinental corridor, providing intra-U.S. connectivity along what is broadly an Alaskan coastal route.
The two cables landing here — the Nome to Homer Express (NTHE) and TERRA SW — reflect a pattern of investment in Alaskan submarine connectivity, where coastal communities depend on undersea fiber links to bridge distances that terrestrial infrastructure struggles to serve. Together, these cables position Williamsport, AK as a node in the domestic Alaskan submarine cable network.
Nome to Homer Express (NTHE) is a submarine cable with a length of 1,545 km, with a ready-for-service (RFS) date of 2027. The cable is currently in draft status. It connects landing points entirely within the United States, supporting domestic Alaskan connectivity along its route.
TERRA SW has an RFS date of 2012 and is listed in draft status. It also connects landing points within the United States. No length data is available for this cable.
Within the United States, submarine cable landing points range considerably in scale. Major hubs such as Boca Raton, FL and San Juan, PR each host eight cables, while Hermosa Beach, CA, Kapolei, HI, Myrtle Beach, SC, and Grover Beach, CA host between four and five cables apiece. With two cables, Williamsport, AK sits toward the lower end of this spectrum, ranking in the top 84% of the 167 U.S. landing points by cable count, reflecting its role as a more localized node in the broader national submarine cable landscape.
Williamsport, AK functions as a two-cable domestic landing point, enabling intra-U.S. submarine connectivity through its hosting of TERRA SW and the forthcoming Nome to Homer Express. Rather than serving international routes, this landing point supports regional Alaskan connectivity, linking communities along a corridor where submarine cables provide an important means of communication across significant geographic distances. TERRA SW has been operational since 2012, while NTHE will add a further 1,545 km domestic link when it enters service in 2027.
As a multi-cable terminus within a domestic-only corridor, Williamsport, AK represents a specific category of landing point in the U.S. submarine cable graph — one oriented toward serving Alaskan intra-state connectivity rather than bridging continents or oceans.
View actual submarine cable routing from Williamsport, AK, United States — with backbone nodes, distance calculations, and latency estimates
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