DNS response history for u2dns1.salesforce.com

u2dns1.salesforce.com is a DNS nameserver monitored by NameServerHistory. This page provides historical DNS response-time data, nameserver uptime signals, DNS latency observations, resolved IP history, successful response counts, failed response counts, and reliability indicators for this nameserver.

The selected UTC date is 2026-08-25. For this date, NameServerHistory found 69 DNS check records, 69 successful responses, 0 failed responses, and 220 ms average response time. Current selected-date status: At least one successful DNS response was recorded for the selected date.

  • Use this report to investigate historical DNS uptime and nameserver reliability.
  • Compare DNS latency changes, failed DNS checks, and response behavior over time.
  • Review the latest resolved IP address and raw DNS check history for u2dns1.salesforce.com.
Records on Selected Date

69

Historical checks stored for this nameserver on selected date

Average Latency

220 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-25 23:51

All timestamps shown in UTC

Latest Resolved IP on Selected Date

156.154.151.1

Most recently resolved hosting IP on selected date

Successful Responses

69

Checks that returned a measurable response

Failed Responses

0

Checks with no response or no returned latency

Failure Rate

0%

Based on the selected date history

Selected Date Status

Responsive

At least one successful response exists on selected date

History for u2dns1.salesforce.com

Showing DNS history for 2026-08-25 UTC. Newest records appear first.

Latency bars are scaled to a maximum of 5000 ms for quick visual comparison.

# Query Time (UTC) Correlation ID Latency Response IP Address
69 2026-08-25 23:51 639232985300872416
43 ms 156.154.151.1
68 2026-08-25 23:34 639232974980190573
22 ms 156.154.151.1
67 2026-08-25 23:17 639232964577050707
26 ms 156.154.151.1
66 2026-08-25 22:23 639232932163142799
2026 ms 156.154.151.1
65 2026-08-25 22:05 639232921673215474
8 ms 156.154.151.1
64 2026-08-25 21:48 639232911234504639
67 ms 156.154.151.1
63 2026-08-25 21:30 639232900747078453
36 ms 156.154.151.1
62 2026-08-25 21:13 639232890389222534
7 ms 156.154.151.1
61 2026-08-25 20:56 639232880143390843
18 ms 156.154.151.1
60 2026-08-25 20:39 639232869755024069
35 ms 156.154.151.1
59 2026-08-25 20:21 639232859355940346
2021 ms 156.154.151.1
58 2026-08-25 20:04 639232848992244953
16 ms 156.154.151.1
57 2026-08-25 19:47 639232838596478500
9 ms 156.154.151.1
56 2026-08-25 19:29 639232828175327683
29 ms 156.154.151.1
55 2026-08-25 19:12 639232817798330473
20 ms 156.154.151.1
54 2026-08-25 18:18 639232785462407552
4 ms 156.154.151.1
53 2026-08-25 18:01 639232775177487032
28 ms 156.154.151.1
52 2026-08-25 17:44 639232764991087115
55 ms 156.154.151.1
51 2026-08-25 17:27 639232754842971478
12 ms 156.154.151.1
50 2026-08-25 17:10 639232744455159107
6 ms 156.154.151.1
49 2026-08-25 16:53 639232734145178231
20 ms 156.154.151.1
48 2026-08-25 16:35 639232723827874402
8 ms 156.154.151.1
47 2026-08-25 16:18 639232713533011892
20 ms 156.154.151.1
46 2026-08-25 16:01 639232703065318207
2020 ms 156.154.151.1
45 2026-08-25 15:43 639232692629559470
19 ms 156.154.151.1
44 2026-08-25 15:26 639232682238836475
7 ms 156.154.151.1
43 2026-08-25 15:09 639232671787004306
14 ms 156.154.151.1
42 2026-08-25 14:14 639232638994329666
9 ms 156.154.151.1
41 2026-08-25 13:57 639232628614783237
6 ms 156.154.151.1
40 2026-08-25 13:40 639232618360728578
10 ms 156.154.151.1
39 2026-08-25 13:22 639232608016476376
33 ms 156.154.151.1
38 2026-08-25 13:05 639232597643611557
4010 ms 156.154.151.1
37 2026-08-25 12:48 639232587225721862
10 ms 156.154.151.1
36 2026-08-25 12:30 639232576780683689
28 ms 156.154.151.1
35 2026-08-25 12:13 639232566381512620
11 ms 156.154.151.1
34 2026-08-25 11:56 639232556111768563
7 ms 156.154.151.1
33 2026-08-25 11:39 639232545839529039
3 ms 156.154.151.1
32 2026-08-25 11:21 639232535349285207
12 ms 156.154.151.1
31 2026-08-25 11:04 639232524938080723
3 ms 156.154.151.1
30 2026-08-25 10:10 639232492740373468
4 ms 156.154.151.1
29 2026-08-25 09:53 639232482235303141
13 ms 156.154.151.1
28 2026-08-25 09:35 639232471861770303
44 ms 156.154.151.1
27 2026-08-25 09:18 639232461630217327
13 ms 156.154.151.1
26 2026-08-25 09:01 639232451282965990
17 ms 156.154.151.1
25 2026-08-25 08:44 639232440814614938
16 ms 156.154.151.1
24 2026-08-25 08:26 639232430410720425
14 ms 156.154.151.1
23 2026-08-25 08:09 639232420003096185
6 ms 156.154.151.1
22 2026-08-25 07:52 639232409467287444
14 ms 156.154.151.1
21 2026-08-25 07:34 639232399077195997
6 ms 156.154.151.1
20 2026-08-25 07:17 639232388731528337
15 ms 156.154.151.1
19 2026-08-25 07:00 639232378288598612
5 ms 156.154.151.1
18 2026-08-25 06:06 639232346196373643
4 ms 156.154.151.1
17 2026-08-25 05:49 639232336112370741
4 ms 156.154.151.1
16 2026-08-25 05:33 639232326146508970
4 ms 156.154.151.1
15 2026-08-25 05:16 639232316189381720
22 ms 156.154.151.1
14 2026-08-25 04:59 639232306217998913
38 ms 156.154.151.1
13 2026-08-25 04:43 639232296255744174
5 ms 156.154.151.1
12 2026-08-25 04:26 639232286095760789
19 ms 156.154.151.1
11 2026-08-25 04:09 639232276086186273
8 ms 156.154.151.1
10 2026-08-25 03:52 639232265900986425
10 ms 156.154.151.1
9 2026-08-25 03:35 639232255723518075
2014 ms 156.154.151.1
8 2026-08-25 03:18 639232245484452890
10 ms 156.154.151.1
7 2026-08-25 03:01 639232235157175331
5 ms 156.154.151.1
6 2026-08-25 02:08 639232203197189095
3 ms 156.154.151.1
5 2026-08-25 01:50 639232192844564298
76 ms 156.154.151.1
4 2026-08-25 01:33 639232182496008942
57 ms 156.154.151.1
3 2026-08-25 01:16 639232172197053132
2014 ms 156.154.151.1
2 2026-08-25 00:23 639232140250307418
8 ms 156.154.151.1
1 2026-08-25 00:06 639232129927860324
5 ms 156.154.151.1