Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
Apache
Page Title
総合人材サービス サカソ、放課後事業、保育事業|株式会社セリオ
Meta Description
セリオの公式Webサイト。セリオでは、結婚や出産を機に職場を離れた女性を主な対象とした人材派遣事業やおこさまのお預かりを行う放課後・保育事業を通して、女性が活躍する社会づくりに貢献しています。
Meta Keywords
セリオ,SERIO,ホールディングス,人材派遣,求人,業務請負,人材紹介,学童保育,放課後施設,保育園,トレジャー☆キッズクラブ,関西,関東,東海,中四国
Most Recent Data
0 hours, 0 minutes ago

Historical Data

DateStatusServer
7/25/2026, 2:37:59 PMActiveApache
7/23/2026, 1:54:19 PMActiveApache
7/20/2026, 3:59:52 AMActiveApache
7/18/2026, 10:00:36 AMActiveApache
7/9/2026, 8:03:35 AMActiveApache
6/6/2026, 2:16:57 AMActiveApache
10/11/2025, 8:51:25 AMActiveApache
10/8/2025, 10:17:13 PMActiveApache
9/6/2025, 5:17:00 PMActiveApache
8/21/2025, 7:27:46 AMActiveApache
7/1/2025, 11:04:24 AMInactiveUnknown
6/21/2025, 8:28:39 PMActiveApache
5/19/2025, 11:55:22 AMActiveApache
5/2/2025, 2:52:35 AMActiveApache
3/21/2025, 3:21:25 PMActiveApache

Don't just check uptime once — watch it 24/7

This is a one-time check. Turn on monitoring and we'll watch the domains that matter to you continuously, notifying you the moment anything moves across all three signals:

Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

DNS changes

We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.

TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

Monitor uptime free

Free for your first domain: uptime, DNS, and certificate together. No credit card.

About Website Uptime Monitoring

Use the Who.is uptime information to track the availability and server information of websites. This helps track:

  • Website availability and response status
  • Server software and configuration
  • Meta information including titles and descriptions
  • Historical uptime patterns

This information is valuable for website owners, system administrators, and anyone interested in monitoring website reliability and performance.

Metrics we monitor

  • Uptime percentage: The percentage of time your website is accessible
  • Response time: How quickly your server responds to requests
  • Status codes: HTTP response codes indicating server status

Disclaimer: Who.is is not affiliated with, endorsed by, or connected to any of the domains displayed on this page. We provide this information as a public service for informational purposes only.