Traffic, queue & uptime calculator

Calculate traffic capacity, queue wait times, server sizing, and allowed downtime for any service or venue.

The same sums answer "how many tills, agents or servers do we need so nobody waits long?" for a shop, a support line or a website. For a web server it goes on to work out sustained bandwidth, monthly transfer, concurrent workers, vCPUs and RAM from your own traffic, the downtime each uptime promise (SLA) allows, and a hardened NGINX or Caddy config with TLS 1.3, security headers and a rate limit. Everything is worked out on this device.

Queue and wait time

How: on average arrivals × time each are being served at once (Little's law); the chance of waiting and the average wait come from the Erlang C formula, which call centres use for the same sum. Arrivals are taken as random, as they are in a shop or on a phone line.

Domain search & packages

Type a name and Verse asks the registry of every ending (.no, .com, .net, .org, .info, .biz) at once whether it is registered, through RDAP (rdap.org), and shows who holds each taken one and when it expires. Verse does not register domains or sell hosting: a free name is registered at any registrar, which also confirms the price and whether the name is reserved.

Type a name, like example, and search: each ending's registry answers whether it is registered.

Name Unit's hosting plans, as its own page lists them (their offer, not Verse's)
PlanStoragePriceServer
Small20 GBKr. 9 / mndServere i Norge
Medium40 GBKr. 19 / mndServere i Norge
Large80 GBKr. 29 / mndServere i Norge

Name Unit's own pages disagree on these plans (read 2026-10-29): its front page lists 9, 19 and 29 kr a month for 20, 40 and 80 GB, its web hosting page 15, 30 and 60 kr for 30, 60 and 120 GB, and its comparison page 10, 20 and 40 kr for 20, 40 and 80 GB. Ask them which price holds before you buy. The yearly domain prices in the search above are from its web hosting page.

Capacity

Shared vs exclusive

A crowded shared host splits its cores between tenants; an exclusive server keeps all of them. The same traffic, in numbers:

What this traffic needs on a crowded shared host and on an exclusive server
SetupCapacityYour loadReadout
Shared host, 4 busy tenants
Exclusive server

Uptime and SLA

Allowed downtime per period, for a 365-day year. Your SLA row is the one in bold:

Allowed downtime per year, month, week and day at each uptime SLA
SLAYearMonthWeekDay
99%3d 15h 36m7h 18m1h 40m 48s14m 24s
99.9%8h 45m 36s43m 48s10m 5s1m 26s
99.95%4h 22m 48s21m 54s5m 2s43s
99.99%52m 34s4m 23s1m9s

Server config

A hardened starting point sized to the numbers above: TLS 1.3, HSTS, a content security policy, nosniff, referrer and permissions policies, and a rate limit. Read it, then copy or download it.


    
  

This is a worked example: 50 requests/s, 200 KB replies, 40 ms of worker time, 128 MB per worker and a 99.9% SLA. Change a number and it becomes yours, and it stays on this device.

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