Service comparison

21st Century Mobile vs. Twilio

21st Century Mobile vs. Twilio: uptime, incident frequency and resolution times, head-to-head.

Last 90 days · 329 incidents total · Twilio on record since Aug 2026 · From each provider's official status page

Head-to-head

90-day summary

21st Century Mobile

21st.se

Online
- 90-day uptime
  
  99.86%
- Incidents (90d)
  
  1
  
  0 major · 1 minor
- Median resolution
  
  2h 55m
- Longest incident
  
  2h 55m
View status page →
Twilio

twilio.com

Ongoing incident
- 90-day uptime
  
  30.77%
- Incidents (90d)
  
  328
  
  0 major · 328 minor
- Median resolution
  
  5h 49m
- Longest incident
  
  1174h 52m
On record since Aug 2026, so these figures count fewer than 90 days of incidents.

View status page →

Uptime over time

Availability across windows

Window	21st Century Mobile	Twilio	Δ
Last 24 hours	100.00%	43.40%	+56.60 pp
Last 7 days	100.00%	6.20%	+93.80 pp
Last 30 days	99.59%	1.45%	+98.14 pp
Last 90 days	99.86%	30.77%	+69.09 pp

Uptime is the share of each window with no incident open on the provider's official status page. Δ is percentage-point difference (21st Century Mobile minus Twilio). Higher is better. Twilio is on record since Aug 2026, so windows reaching back before then count fewer days of incidents.

Incidents 90-day

Severity breakdown

21st Century Mobile

1 total

0 major 1 minor
- Median resolution
  
  2h 55m
- Longest incident
  
  2h 55m
Twilio

328 total since Aug 2026

0 major 328 minor
- Median resolution
  
  5h 49m
- Longest incident
  
  1174h 52m

Recent activity

Last 5 incidents, side-by-side

21st Century Mobile
- Sep 29
  
  Messaging platform (myMSP) delivery delays
  
  2h 55m
  
  Minor
- Nov 29, 2024
  
  Delivery Issue Tele2 & Telenor (Sweden)
  
  < 1m
  
  Minor
- Mar 10, 2024
  
  Messaging platform (myMSP) delivery delays
  
  < 1m
  
  Major
- Feb 14, 2024
  
  Messaging platform (myMSP) delivery delays
  
  1h 19m
  
  Minor
- May 10, 2022
  
  Messaging platform (myMSP) delivery delays
  
  32m
  
  Minor
View all incidents →
Twilio
- Oct 27
  
  Elevated 500 Errors Affecting Programmable Voice API
  
  < 1m
  
  Minor
- Oct 27
  
  SMS Delivery Delays from Twilio to Surf Telecom Brazil
  
  Ongoing
  
  Minor
- Oct 27
  
  SMS Delivery Delays and Failures between a Subset of Twilio Long Codes and Multiple Networks in Portugal
  
  1h 9m
  
  Minor
- Oct 27
  
  Voice Call Failures from a Subset of Twilio Phone Numbers to Argentina
  
  Ongoing
  
  Minor
- Oct 27
  
  Elevated 500 Errors Affecting Programmable Messaging API
  
  < 1m
  
  Minor
View all incidents →

Bottom line

21st Century Mobile wins

21st Century Mobile edges out on 30-day uptime.

21st Century Mobile posted 99.59% vs. 1.45% for Twilio over the last 30 days (Δ +98.14 pp). Twilio is on record only since Aug 2026, so the 90-day figures above are not like for like.

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