DNS response history for ns1.cofserver.com

ns1.cofserver.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 2026-08-18. For this date, NameServerHistory found 75 DNS check records, 74 successful responses, 1 failed responses, and 343 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 ns1.cofserver.com.
Records on Selected Date

75

Historical checks stored for this nameserver on selected date

Average Latency

343 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-18 23:51

All timestamps shown in UTC

Latest Resolved IP on Selected Date

217.18.168.4

Most recently resolved hosting IP on selected date

Successful Responses

74

Checks that returned a measurable response

Failed Responses

1

Checks with no response or no returned latency

Failure Rate

1%

Based on the selected date history

Selected Date Status

Responsive

At least one successful response exists on selected date

History for ns1.cofserver.com

Showing DNS history for 2026-08-18 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
75 2026-08-18 23:51 639226935204800669
72 ms 217.18.168.4
74 2026-08-18 23:34 639226925298919497
75 ms 217.18.168.4
73 2026-08-18 23:18 639226915487885053
91 ms 217.18.168.4
72 2026-08-18 23:01 639226905465760034
86 ms 217.18.168.4
71 2026-08-18 22:44 639226895378104692
123 ms 217.18.168.4
70 2026-08-18 21:51 639226863374232622
90 ms 217.18.168.4
69 2026-08-18 21:35 639226853698516058
53 ms 217.18.168.4
68 2026-08-18 21:18 639226843797360601
75 ms 217.18.168.4
67 2026-08-18 21:02 639226834046588155
51 ms 217.18.168.4
66 2026-08-18 20:46 639226824234488533
90 ms 217.18.168.4
65 2026-08-18 20:29 639226814549928621
20 ms 217.18.168.4
64 2026-08-18 20:13 639226804721432353
65 ms 217.18.168.4
63 2026-08-18 19:57 639226795048828184
7 ms 217.18.168.4
62 2026-08-18 19:41 639226785202482420
78 ms 217.18.168.4
61 2026-08-18 19:24 639226775309362607
101 ms 217.18.168.4
60 2026-08-18 19:07 639226765406586155
139 ms 217.18.168.4
59 2026-08-18 18:51 639226755437790519
53 ms 217.18.168.4
58 2026-08-18 17:58 639226723856194457
55 ms 217.18.168.4
57 2026-08-18 17:42 639226714050583422
2028 ms 217.18.168.4
56 2026-08-18 17:26 639226704236499724
73 ms 217.18.168.4
55 2026-08-18 17:09 639226694184520163
104 ms 217.18.168.4
54 2026-08-18 16:52 639226684161203477
77 ms 217.18.168.4
53 2026-08-18 16:36 639226674305430109
210 ms 217.18.168.4
52 2026-08-18 16:19 639226664489607984
-
51 2026-08-18 16:03 639226654533111667
113 ms 217.18.168.4
50 2026-08-18 15:46 639226644778594725
76 ms 217.18.168.4
49 2026-08-18 15:30 639226634901553621
16 ms 217.18.168.4
48 2026-08-18 15:13 639226624921864967
113 ms 217.18.168.4
47 2026-08-18 14:57 639226614939419403
78 ms 217.18.168.4
46 2026-08-18 14:04 639226583021074771
92 ms 217.18.168.4
45 2026-08-18 13:47 639226573279933585
2058 ms 217.18.168.4
44 2026-08-18 13:31 639226563494036301
74 ms 217.18.168.4
43 2026-08-18 13:15 639226553708216256
64 ms 217.18.168.4
42 2026-08-18 12:58 639226544003734815
88 ms 217.18.168.4
41 2026-08-18 12:42 639226534105733155
2057 ms 217.18.168.4
40 2026-08-18 12:26 639226524298118898
90 ms 217.18.168.4
39 2026-08-18 12:09 639226514525195335
105 ms 217.18.168.4
38 2026-08-18 11:53 639226504703635320
71 ms 217.18.168.4
37 2026-08-18 11:36 639226494737271720
59 ms 217.18.168.4
36 2026-08-18 11:20 639226485005027236
79 ms 217.18.168.4
35 2026-08-18 11:04 639226475133236105
11 ms 217.18.168.4
34 2026-08-18 10:10 639226442975077052
49 ms 217.18.168.4
33 2026-08-18 09:54 639226433317932039
63 ms 217.18.168.4
32 2026-08-18 09:38 639226423688431096
73 ms 217.18.168.4
31 2026-08-18 09:22 639226413998250045
72 ms 217.18.168.4
30 2026-08-18 09:06 639226404284554875
128 ms 217.18.168.4
29 2026-08-18 08:49 639226394637043309
92 ms 217.18.168.4
28 2026-08-18 08:33 639226385052447582
72 ms 217.18.168.4
27 2026-08-18 08:18 639226375506189603
2066 ms 217.18.168.4
26 2026-08-18 08:01 639226365690646426
63 ms 217.18.168.4
25 2026-08-18 07:45 639226355771007701
2037 ms 217.18.168.4
24 2026-08-18 07:28 639226345946269369
85 ms 217.18.168.4
23 2026-08-18 07:12 639226336241601848
164 ms 217.18.168.4
22 2026-08-18 06:20 639226304950675290
2009 ms 217.18.168.4
21 2026-08-18 06:04 639226295324754616
71 ms 217.18.168.4
20 2026-08-18 05:48 639226285824640601
83 ms 217.18.168.4
19 2026-08-18 05:32 639226276321223917
194 ms 217.18.168.4
18 2026-08-18 05:16 639226266800200046
88 ms 217.18.168.4
17 2026-08-18 05:00 639226256958066164
2061 ms 217.18.168.4
16 2026-08-18 04:44 639226247432364597
64 ms 217.18.168.4
15 2026-08-18 04:28 639226237703388552
4030 ms 217.18.168.4
14 2026-08-18 04:12 639226227937569589
86 ms 217.18.168.4
13 2026-08-18 03:55 639226218052465471
96 ms 217.18.168.4
12 2026-08-18 03:39 639226208429623997
77 ms 217.18.168.4
11 2026-08-18 03:23 639226198800675295
9 ms 217.18.168.4
10 2026-08-18 02:31 639226167722042574
22 ms 217.18.168.4
9 2026-08-18 02:16 639226158277924383
61 ms 217.18.168.4
8 2026-08-18 02:00 639226148757810592
3 ms 217.18.168.4
7 2026-08-18 01:44 639226139348611045
56 ms 217.18.168.4
6 2026-08-18 01:28 639226129823462907
36 ms 217.18.168.4
5 2026-08-18 01:12 639226120218260005
89 ms 217.18.168.4
4 2026-08-18 00:56 639226110875503904
73 ms 217.18.168.4
3 2026-08-18 00:41 639226101376311912
75 ms 217.18.168.4
2 2026-08-18 00:25 639226091924943492
72 ms 217.18.168.4
1 2026-08-18 00:09 639226082133158124
2014 ms 217.18.168.4