Is costargroup.com down right now?

As of 2026-02-20T20:59:52.545Z, costargroup.com is UP with an average response time of 6970ms and 25.0% uptime over the last 7 days.

Is CoStar Group (costargroup.com) Down?

UP — Responding normally

Last checked: 1h ago

Avg TTFB

6970ms

#457 in S&P 500

Total Load

1743ms

Uptime

25.0%

Based on 8 checks

CoStar Group (CSGP)

Ranked #457 overall in S&P 500

Ranked #31 in Real Estate

Time	Status	TTFB	Total
2/20/2026, 7:21:02 PM	✓ Up	4437 ms	4442 ms
2/20/2026, 2:30:13 PM	✓ Up	9503 ms	9505 ms
2/20/2026, 12:57:57 PM	✗ Down	— ms	0 ms
2/20/2026, 12:54:49 PM	✗ Down	— ms	0 ms
2/20/2026, 12:52:57 PM	✗ Down	— ms	0 ms
2/20/2026, 12:36:15 PM	✗ Down	— ms	0 ms
2/20/2026, 12:32:51 PM	✗ Down	— ms	0 ms
2/20/2026, 12:32:27 PM	✗ Down	— ms	0 ms