SeaMeWe4 Net Tools is an independent, free set of networking calculators. This page states plainly what the site is not, so nothing on it is mistaken for an official statement from a cable operator, a cloud provider, or any other company.
Not affiliated with any cable system or telecom operator
This site is not affiliated with, endorsed by, sponsored by, or operated for the SEA-ME-WE 4 consortium, any of its member telecom operators, or any other submarine cable system, telecom carrier or internet service provider named or referenced anywhere on this site. The name “SeaMeWe4” references the real SEA-ME-WE 4 cable for educational context on our latency calculator only, and implies no business relationship with that consortium or its operators.
Not affiliated with AWS, Microsoft Azure, or any cloud provider
The AWS/Azure VPC Subnet Calculator is an independent educational tool. SeaMeWe4 Net Tools is not affiliated with, endorsed by, or operated for Amazon Web Services, Microsoft Azure, or any other cloud provider. We cite each provider’s own public documentation when describing their reserved IP addresses or subnet sizing rules, and link to the primary source wherever a specific number is quoted.
Trademarks belong to their owners
Any company name, product name, trademark or service mark mentioned on this site — including “SEA-ME-WE 4”, “AWS”, “Amazon Web Services”, “Microsoft Azure” and any others — belongs to its respective owner. Their use here is for identification and educational reference only, and does not imply sponsorship or endorsement of SeaMeWe4 Net Tools.
Latency figures are physics floors, not guarantees
The Network Latency Calculator estimates a best-case, theoretical round-trip time based on great-circle distance, a route factor and the speed of light in optical fiber. It is a physics floor: a lower bound on what is possible, not a measurement of any real connection, provider, or route. Actual ping times depend on terrestrial backhaul, routing, equipment and network congestion, and are normally higher than this estimate — see our about SeaMeWe4 page for how every calculator’s results are checked before publishing.
No professional advice
Nothing on this site is professional network-engineering, legal or financial advice. The calculators are reference and planning tools; verify any number that matters against the primary source we cite, and against your own testing, before relying on it for a production system.
Frequently asked questions
Does SeaMeWe4 Net Tools operate the SEA-ME-WE 4 cable?
No. SeaMeWe4 Net Tools is an independent educational website. We do not own, operate, maintain or represent the SEA-ME-WE 4 cable system or any of its member operators.
Is the AWS/Azure calculator an official AWS or Microsoft tool?
No. It is an independent calculator that applies the reserved-address rules each provider publishes in its own documentation. Always check the current official documentation for anything that affects a production deployment.
Why doesn’t my real ping match the latency calculator?
The calculator shows a theoretical physics floor, not a live measurement. Real-world ping is almost always higher once routing, backhaul and congestion are added — run a traceroute or ping test on your own connection for an actual measurement.
See our Privacy Policy and Terms of Use for how the site itself handles data and usage, and SeaMeWe4 Net Tools for the full list of calculators.
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