GitHub|Since 2007
Wptr Lab

plCal.plvsSprint Data Centerpl

Head-to-head hosting performance comparison based on real test data

Test Date: 2/25/2026

Cal.pl
WPTR Score2597 ms
Rank#681
TTFB458ms
Time to 1MB899ms
Score2597
LCP858ms
FCP658ms
Sprint Data Center

Sprint Data Center

View Details →
WPTR ScoreWinner1532 ms
Rank#461
TTFB537ms
Time to 1MB423ms
Score1532
LCP937ms
FCP737ms

Our Verdict

Cal.pl wins with 458ms TTFB (vs Sprint Data Center's 537ms)

TTFB Breakdown (Connection Phases)

PhaseCal.plSprint Data CenterWinner
DNS Lookup39ms131msCal.pl
TCP Connection96ms127msCal.pl
TLS Handshake60ms115msCal.pl
Server Processing244ms144msSprint Data Center
Total TTFB439ms517msCal.pl

Technology & Security Features

Cal.pl

Server/CDNLiteSpeed
HSTS Enabled
Brotli Compression Enabled
HTTP/3 (QUIC) Enabled
Page Size88.7 KB

Sprint Data Center

Server/CDNApache/2.4.25 (Debia
HSTS Enabled
Brotli Compression Disabled
HTTP/3 (QUIC) Disabled
Page Size195.4 KB
3/3
Cal.pl Security Features
1/3
Sprint Data Center Security Features

TTFB Comparison Over Time

Understanding the Metrics

WPTR Score: Wptr Lab Real-Load Score: (Time to 1MB x 2.4) + TTFB. Raw server & network performance (Lower is better).
TTFB: Time to First Byte - How fast the server responds
Time to 1MB: Time to 1MB - Time taken to download 1MB of data (lower is better)
LCP: Largest Contentful Paint - When main content loads
FCP: First Contentful Paint - When first content appears
Score: Overall performance score (0-100)

A Note on Hosting Selection

While TTFB and performance metrics are important indicators, choosing the right hosting provider involves many other factors: security measures, customer support quality, uptime guarantees, scalability options, and pricing structure. Academic research emphasizes that a balanced approach considering all these aspects leads to better long-term outcomes.

Chizhov, A., & Fesenko, A. (2025). Web hosting companies' client solutions: A study of a strategic standpoint. Corporate & Business Strategy Review. doi.org/10.22495/cbsrv6i1art14

Data in this comparison is obtained through independent tests using our TTFB Checker tool.