DNS response history for pdns221.ultradns.biz

pdns221.ultradns.biz 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 2026-09-01. For this date, NameServerHistory found 44 DNS check records, 44 successful responses, 0 failed responses, and 206 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 pdns221.ultradns.biz.
Records on Selected Date

44

Historical checks stored for this nameserver on selected date

Average Latency

206 ms

Calculated from available response records

Latest Check on Selected Date

2026-09-01 15:16

All timestamps shown in UTC

Latest Resolved IP on Selected Date

156.154.66.221

Most recently resolved hosting IP on selected date

Successful Responses

44

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 pdns221.ultradns.biz

Showing DNS history for 2026-09-01 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
44 2026-09-01 15:16 639238723349432115
10 ms 156.154.66.221
43 2026-09-01 14:22 639238690993873259
9 ms 156.154.66.221
42 2026-09-01 14:05 639238680658140472
10 ms 156.154.66.221
41 2026-09-01 13:47 639238670295233158
9 ms 156.154.66.221
40 2026-09-01 13:30 639238659704397018
18 ms 156.154.66.221
39 2026-09-01 13:12 639238649308394463
12 ms 156.154.66.221
38 2026-09-01 12:55 639238638904588883
15 ms 156.154.66.221
37 2026-09-01 12:38 639238628486902752
2075 ms 156.154.66.221
36 2026-09-01 12:20 639238617906743100
13 ms 156.154.66.221
35 2026-09-01 12:03 639238607506044626
10 ms 156.154.66.221
34 2026-09-01 11:45 639238597040761406
31 ms 156.154.66.221
33 2026-09-01 11:27 639238586261546969
44 ms 156.154.66.221
32 2026-09-01 11:09 639238575587642333
13 ms 156.154.66.221
31 2026-09-01 10:15 639238543127398267
12 ms 156.154.66.221
30 2026-09-01 09:58 639238532668234016
26 ms 156.154.66.221
29 2026-09-01 09:40 639238522029321761
20 ms 156.154.66.221
28 2026-09-01 09:23 639238511519050351
9 ms 156.154.66.221
27 2026-09-01 09:05 639238500942239673
101 ms 156.154.66.221
26 2026-09-01 08:48 639238490412377398
12 ms 156.154.66.221
25 2026-09-01 08:30 639238479833203021
10 ms 156.154.66.221
24 2026-09-01 08:12 639238469140507479
40 ms 156.154.66.221
23 2026-09-01 07:54 639238458443560361
114 ms 156.154.66.221
22 2026-09-01 07:36 639238447694851502
31 ms 156.154.66.221
21 2026-09-01 07:18 639238436624109087
10 ms 156.154.66.221
20 2026-09-01 07:00 639238425565611335
52 ms 156.154.66.221
19 2026-09-01 06:04 639238392250222581
43 ms 156.154.66.221
18 2026-09-01 05:46 639238381322537831
12 ms 156.154.66.221
17 2026-09-01 05:27 639238370248186084
16 ms 156.154.66.221
16 2026-09-01 05:09 639238359264687845
31 ms 156.154.66.221
15 2026-09-01 04:51 639238348534621818
36 ms 156.154.66.221
14 2026-09-01 04:33 639238337725739433
12 ms 156.154.66.221
13 2026-09-01 04:15 639238326844749368
7 ms 156.154.66.221
12 2026-09-01 03:57 639238315792024737
21 ms 156.154.66.221
11 2026-09-01 03:39 639238304931064768
10 ms 156.154.66.221
10 2026-09-01 03:20 639238294131483803
11 ms 156.154.66.221
9 2026-09-01 03:02 639238283314985519
9 ms 156.154.66.221
8 2026-09-01 02:44 639238272374093187
10 ms 156.154.66.221
7 2026-09-01 01:50 639238240032549922
10 ms 156.154.66.221
6 2026-09-01 01:32 639238229204177368
2038 ms 156.154.66.221
5 2026-09-01 01:14 639238218326150282
16 ms 156.154.66.221
4 2026-09-01 00:56 639238207574700853
24 ms 156.154.66.221
3 2026-09-01 00:38 639238196660283915
24 ms 156.154.66.221
2 2026-09-01 00:20 639238185782358546
33 ms 156.154.66.221
1 2026-09-01 00:02 639238175054391781
4012 ms 156.154.66.221