DNS response history for f.root-servers.net

f.root-servers.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 2026-08-10. For this date, NameServerHistory found 82 DNS check records, 82 successful responses, 0 failed responses, and 9 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 f.root-servers.net.
Records on Selected Date

82

Historical checks stored for this nameserver on selected date

Average Latency

9 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-10 23:52

All timestamps shown in UTC

Latest Resolved IP on Selected Date

192.5.5.241

Most recently resolved hosting IP on selected date

Successful Responses

82

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 f.root-servers.net

Showing DNS history for 2026-08-10 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
82 2026-08-10 23:52 639220027366289509
2 ms 192.5.5.241
81 2026-08-10 23:37 639220018272941900
5 ms 192.5.5.241
80 2026-08-10 23:21 639220009109892969
5 ms 192.5.5.241
79 2026-08-10 23:06 639220000040489788
5 ms 192.5.5.241
78 2026-08-10 22:51 639219991197135747
6 ms 192.5.5.241
77 2026-08-10 22:36 639219982104540014
4 ms 192.5.5.241
76 2026-08-10 22:21 639219973150300215
10 ms 192.5.5.241
75 2026-08-10 22:06 639219964188486697
3 ms 192.5.5.241
74 2026-08-10 21:51 639219954995921784
6 ms 192.5.5.241
73 2026-08-10 21:35 639219945559908104
110 ms 192.5.5.241
72 2026-08-10 20:43 639219914137782273
8 ms 192.5.5.241
71 2026-08-10 20:28 639219904858355064
5 ms 192.5.5.241
70 2026-08-10 20:12 639219895655263396
5 ms 192.5.5.241
69 2026-08-10 19:57 639219886527091074
3 ms 192.5.5.241
68 2026-08-10 19:42 639219877343266628
4 ms 192.5.5.241
67 2026-08-10 19:26 639219868177358195
5 ms 192.5.5.241
66 2026-08-10 19:11 639219859159581515
8 ms 192.5.5.241
65 2026-08-10 18:56 639219850124020182
8 ms 192.5.5.241
64 2026-08-10 18:41 639219840940124840
5 ms 192.5.5.241
63 2026-08-10 18:26 639219831829876486
5 ms 192.5.5.241
62 2026-08-10 18:10 639219822587759143
15 ms 192.5.5.241
61 2026-08-10 17:55 639219813247114428
19 ms 192.5.5.241
60 2026-08-10 17:03 639219781959606396
7 ms 192.5.5.241
59 2026-08-10 16:47 639219772658305431
4 ms 192.5.5.241
58 2026-08-10 16:32 639219763454523027
5 ms 192.5.5.241
57 2026-08-10 16:17 639219754279127815
2 ms 192.5.5.241
56 2026-08-10 16:01 639219745087467767
9 ms 192.5.5.241
55 2026-08-10 15:46 639219735900678107
2 ms 192.5.5.241
54 2026-08-10 15:30 639219726531461979
5 ms 192.5.5.241
53 2026-08-10 15:15 639219717415222156
10 ms 192.5.5.241
52 2026-08-10 15:00 639219708266470863
12 ms 192.5.5.241
51 2026-08-10 14:45 639219699049479559
5 ms 192.5.5.241
50 2026-08-10 14:29 639219689775815194
10 ms 192.5.5.241
49 2026-08-10 14:14 639219680511810632
94 ms 192.5.5.241
48 2026-08-10 13:21 639219648997191257
5 ms 192.5.5.241
47 2026-08-10 13:06 639219639938909436
4 ms 192.5.5.241
46 2026-08-10 12:51 639219630718286441
4 ms 192.5.5.241
45 2026-08-10 12:35 639219621472350410
3 ms 192.5.5.241
44 2026-08-10 12:20 639219612500421992
3 ms 192.5.5.241
43 2026-08-10 12:05 639219603383833445
4 ms 192.5.5.241
42 2026-08-10 11:50 639219594143823358
3 ms 192.5.5.241
41 2026-08-10 11:35 639219585053166024
12 ms 192.5.5.241
40 2026-08-10 11:19 639219575885776644
4 ms 192.5.5.241
39 2026-08-10 11:04 639219566844532361
3 ms 192.5.5.241
38 2026-08-10 10:49 639219557705808294
4 ms 192.5.5.241
37 2026-08-10 10:34 639219548482688649
25 ms 192.5.5.241
36 2026-08-10 09:42 639219517492763539
8 ms 192.5.5.241
35 2026-08-10 09:27 639219508755773605
7 ms 192.5.5.241
34 2026-08-10 09:13 639219499852103863
3 ms 192.5.5.241
33 2026-08-10 08:58 639219490893714387
2 ms 192.5.5.241
32 2026-08-10 08:43 639219482299305521
6 ms 192.5.5.241
31 2026-08-10 08:29 639219473613114853
10 ms 192.5.5.241
30 2026-08-10 08:15 639219465061138643
3 ms 192.5.5.241
29 2026-08-10 08:01 639219456616129015
4 ms 192.5.5.241
28 2026-08-10 07:46 639219447974008557
7 ms 192.5.5.241
27 2026-08-10 07:32 639219439498255213
6 ms 192.5.5.241
26 2026-08-10 07:17 639219430664872256
8 ms 192.5.5.241
25 2026-08-10 07:02 639219421757560037
11 ms 192.5.5.241
24 2026-08-10 06:11 639219390773218684
5 ms 192.5.5.241
23 2026-08-10 05:57 639219382205367722
4 ms 192.5.5.241
22 2026-08-10 05:42 639219373711937615
3 ms 192.5.5.241
21 2026-08-10 05:28 639219365088558404
3 ms 192.5.5.241
20 2026-08-10 05:13 639219356348833255
23 ms 192.5.5.241
19 2026-08-10 04:59 639219347860053478
3 ms 192.5.5.241
18 2026-08-10 04:45 639219339173195121
6 ms 192.5.5.241
17 2026-08-10 04:31 639219330642664669
2 ms 192.5.5.241
16 2026-08-10 04:16 639219322058698995
5 ms 192.5.5.241
15 2026-08-10 04:02 639219313564344199
5 ms 192.5.5.241
14 2026-08-10 03:47 639219304775113236
2 ms 192.5.5.241
13 2026-08-10 03:32 639219295706181119
13 ms 192.5.5.241
12 2026-08-10 02:41 639219264663923254
7 ms 192.5.5.241
11 2026-08-10 02:26 639219256015178099
3 ms 192.5.5.241
10 2026-08-10 02:12 639219247509540188
4 ms 192.5.5.241
9 2026-08-10 01:58 639219238999539092
3 ms 192.5.5.241
8 2026-08-10 01:44 639219230498823902
10 ms 192.5.5.241
7 2026-08-10 01:29 639219221706460911
3 ms 192.5.5.241
6 2026-08-10 01:14 639219212930606887
5 ms 192.5.5.241
5 2026-08-10 01:00 639219204307908525
6 ms 192.5.5.241
4 2026-08-10 00:46 639219195720181470
6 ms 192.5.5.241
3 2026-08-10 00:31 639219186898174002
4 ms 192.5.5.241
2 2026-08-10 00:16 639219178004946976
9 ms 192.5.5.241
1 2026-08-10 00:01 639219168958805474
13 ms 192.5.5.241