DNS response history for pdns128.ultradns.net

pdns128.ultradns.net 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 2026-08-26. For this date, NameServerHistory found 57 DNS check records, 56 successful responses, 1 failed responses, and 314 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 pdns128.ultradns.net.
Records on Selected Date

57

Historical checks stored for this nameserver on selected date

Average Latency

314 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-26 18:45

All timestamps shown in UTC

Latest Resolved IP on Selected Date

156.154.65.128

Most recently resolved hosting IP on selected date

Successful Responses

56

Checks that returned a measurable response

Failed Responses

1

Checks with no response or no returned latency

Failure Rate

2%

Based on the selected date history

Selected Date Status

Responsive

At least one successful response exists on selected date

History for pdns128.ultradns.net

Showing DNS history for 2026-08-26 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
57 2026-08-26 18:45 639233667209186136
2035 ms 156.154.65.128
56 2026-08-26 18:28 639233656814316266
11 ms 156.154.65.128
55 2026-08-26 18:10 639233646245051806
11 ms 156.154.65.128
54 2026-08-26 17:53 639233635663779051
11 ms 156.154.65.128
53 2026-08-26 17:35 639233624977342122
10 ms 156.154.65.128
52 2026-08-26 17:17 639233614446136153
22 ms 156.154.65.128
51 2026-08-26 17:00 639233603737877581
14 ms 156.154.65.128
50 2026-08-26 16:42 639233593269224651
4030 ms 156.154.65.128
49 2026-08-26 16:24 639233582635086903
120 ms 156.154.65.128
48 2026-08-26 16:07 639233572000374575
12 ms 156.154.65.128
47 2026-08-26 15:49 639233561188633861
16 ms 156.154.65.128
46 2026-08-26 15:31 639233550544357027
19 ms 156.154.65.128
45 2026-08-26 14:37 639233517966053117
44 ms 156.154.65.128
44 2026-08-26 14:19 639233507603253585
83 ms 156.154.65.128
43 2026-08-26 14:02 639233497229039167
11 ms 156.154.65.128
42 2026-08-26 13:45 639233486864546406
36 ms 156.154.65.128
41 2026-08-26 13:27 639233476455174682
25 ms 156.154.65.128
40 2026-08-26 13:10 639233466171592605
15 ms 156.154.65.128
39 2026-08-26 12:53 639233455747096265
62 ms 156.154.65.128
38 2026-08-26 12:36 639233445367152284
34 ms 156.154.65.128
37 2026-08-26 12:18 639233434974187439
15 ms 156.154.65.128
36 2026-08-26 12:01 639233424567558554
126 ms 156.154.65.128
35 2026-08-26 11:43 639233414056832719
33 ms 156.154.65.128
34 2026-08-26 11:26 639233403515141099
25 ms 156.154.65.128
33 2026-08-26 10:31 639233370841350248
12 ms 156.154.65.128
32 2026-08-26 10:14 639233360361507238
9 ms 156.154.65.128
31 2026-08-26 09:57 639233350067824371
-
30 2026-08-26 09:39 639233339545274518
62 ms 156.154.65.128
29 2026-08-26 09:22 639233329214918079
41 ms 156.154.65.128
28 2026-08-26 09:05 639233318749762337
11 ms 156.154.65.128
27 2026-08-26 08:47 639233308387917838
15 ms 156.154.65.128
26 2026-08-26 08:30 639233297961740122
37 ms 156.154.65.128
25 2026-08-26 08:12 639233287487159094
10 ms 156.154.65.128
24 2026-08-26 07:55 639233276995531707
15 ms 156.154.65.128
23 2026-08-26 07:37 639233266521568229
12 ms 156.154.65.128
22 2026-08-26 07:20 639233256081047431
18 ms 156.154.65.128
21 2026-08-26 06:26 639233223620132921
2010 ms 156.154.65.128
20 2026-08-26 06:09 639233213287814244
19 ms 156.154.65.128
19 2026-08-26 05:51 639233202925983161
14 ms 156.154.65.128
18 2026-08-26 05:34 639233192644780696
10 ms 156.154.65.128
17 2026-08-26 05:17 639233182401183833
2024 ms 156.154.65.128
16 2026-08-26 05:00 639233172074181051
17 ms 156.154.65.128
15 2026-08-26 04:43 639233161808421455
38 ms 156.154.65.128
14 2026-08-26 04:26 639233151357344052
23 ms 156.154.65.128
13 2026-08-26 04:08 639233141034116946
94 ms 156.154.65.128
12 2026-08-26 03:51 639233130828334142
13 ms 156.154.65.128
11 2026-08-26 03:34 639233120373450007
9 ms 156.154.65.128
10 2026-08-26 03:17 639233110066216193
24 ms 156.154.65.128
9 2026-08-26 02:23 639233078065410564
7 ms 156.154.65.128
8 2026-08-26 02:06 639233067787457832
9 ms 156.154.65.128
7 2026-08-26 01:49 639233057501801162
31 ms 156.154.65.128
6 2026-08-26 01:32 639233047089431703
79 ms 156.154.65.128
5 2026-08-26 01:15 639233036754790688
2036 ms 156.154.65.128
4 2026-08-26 00:57 639233026412602472
18 ms 156.154.65.128
3 2026-08-26 00:40 639233016064066127
4031 ms 156.154.65.128
2 2026-08-26 00:23 639233005922655772
16 ms 156.154.65.128
1 2026-08-26 00:06 639232995672256907
13 ms 156.154.65.128