DNS response history for sullivan.ns.cloudflare.com

sullivan.ns.cloudflare.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 2026-08-23. For this date, NameServerHistory found 223 DNS check records, 222 successful responses, 1 failed responses, and 153 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 sullivan.ns.cloudflare.com.
Records on Selected Date

223

Historical checks stored for this nameserver on selected date

Average Latency

153 ms

Calculated from available response records

Latest Check on Selected Date

2026-08-23 23:47

All timestamps shown in UTC

Latest Resolved IP on Selected Date

108.162.195.161

Most recently resolved hosting IP on selected date

Successful Responses

222

Checks that returned a measurable response

Failed Responses

1

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 sullivan.ns.cloudflare.com

Showing DNS history for 2026-08-23 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
223 2026-08-23 23:47 639231254406598736
10 ms 108.162.195.161
222 2026-08-23 23:47 639231254406598736
10 ms 162.159.44.161
221 2026-08-23 23:47 639231254406598736
10 ms 172.64.35.161
220 2026-08-23 23:31 639231244697865594
37 ms 172.64.35.161
219 2026-08-23 23:31 639231244697865594
37 ms 108.162.195.161
218 2026-08-23 23:31 639231244697865594
37 ms 162.159.44.161
217 2026-08-23 23:15 639231234893504693
4 ms 108.162.195.161
216 2026-08-23 23:15 639231234893504693
4 ms 162.159.44.161
215 2026-08-23 23:15 639231234893504693
4 ms 172.64.35.161
214 2026-08-23 22:58 639231225024549139
32 ms 108.162.195.161
213 2026-08-23 22:58 639231225024549139
32 ms 172.64.35.161
212 2026-08-23 22:58 639231225024549139
32 ms 162.159.44.161
211 2026-08-23 22:42 639231214931957622
7 ms 108.162.195.161
210 2026-08-23 22:42 639231214931957622
7 ms 162.159.44.161
209 2026-08-23 22:42 639231214931957622
7 ms 172.64.35.161
208 2026-08-23 22:25 639231204962010549
9 ms 162.159.44.161
207 2026-08-23 22:25 639231204962010549
9 ms 172.64.35.161
206 2026-08-23 22:25 639231204962010549
9 ms 108.162.195.161
205 2026-08-23 22:08 639231195170138463
4 ms 108.162.195.161
204 2026-08-23 22:08 639231195170138463
4 ms 162.159.44.161
203 2026-08-23 22:08 639231195170138463
4 ms 172.64.35.161
202 2026-08-23 21:52 639231185235020577
43 ms 108.162.195.161
201 2026-08-23 21:52 639231185235020577
43 ms 162.159.44.161
200 2026-08-23 21:52 639231185235020577
43 ms 172.64.35.161
199 2026-08-23 21:36 639231175558690075
9 ms 172.64.35.161
198 2026-08-23 21:36 639231175558690075
9 ms 162.159.44.161
197 2026-08-23 21:36 639231175558690075
9 ms 108.162.195.161
196 2026-08-23 21:19 639231165610444012
15 ms 108.162.195.161
195 2026-08-23 21:19 639231165610444012
15 ms 162.159.44.161
194 2026-08-23 21:19 639231165610444012
15 ms 172.64.35.161
193 2026-08-23 20:26 639231133806425363
36 ms 172.64.35.161
192 2026-08-23 20:26 639231133806425363
36 ms 162.159.44.161
191 2026-08-23 20:26 639231133806425363
36 ms 108.162.195.161
190 2026-08-23 20:10 639231124203758023
8 ms 162.159.44.161
189 2026-08-23 20:10 639231124203758023
8 ms 172.64.35.161
188 2026-08-23 20:10 639231124203758023
8 ms 108.162.195.161
187 2026-08-23 19:54 639231114428262706
47 ms 172.64.35.161
186 2026-08-23 19:54 639231114428262706
47 ms 162.159.44.161
185 2026-08-23 19:54 639231114428262706
47 ms 108.162.195.161
184 2026-08-23 19:38 639231104662480065
6 ms 108.162.195.161
183 2026-08-23 19:38 639231104662480065
6 ms 162.159.44.161
182 2026-08-23 19:38 639231104662480065
6 ms 172.64.35.161
181 2026-08-23 19:21 639231094840372018
8 ms 108.162.195.161
180 2026-08-23 19:21 639231094840372018
8 ms 162.159.44.161
179 2026-08-23 19:21 639231094840372018
8 ms 172.64.35.161
178 2026-08-23 19:05 639231085024583224
20 ms 108.162.195.161
177 2026-08-23 19:05 639231085024583224
20 ms 162.159.44.161
176 2026-08-23 19:05 639231085024583224
20 ms 172.64.35.161
175 2026-08-23 18:49 639231075257417427
52 ms 162.159.44.161
174 2026-08-23 18:49 639231075257417427
52 ms 172.64.35.161
173 2026-08-23 18:49 639231075257417427
52 ms 108.162.195.161
172 2026-08-23 18:32 639231065516009503
16 ms 108.162.195.161
171 2026-08-23 18:32 639231065516009503
16 ms 162.159.44.161
170 2026-08-23 18:32 639231065516009503
16 ms 172.64.35.161
169 2026-08-23 18:16 639231055805348837
41 ms 108.162.195.161
168 2026-08-23 18:16 639231055805348837
41 ms 162.159.44.161
167 2026-08-23 18:16 639231055805348837
41 ms 172.64.35.161
166 2026-08-23 18:00 639231045980373765
4 ms 108.162.195.161
165 2026-08-23 18:00 639231045980373765
4 ms 162.159.44.161
164 2026-08-23 18:00 639231045980373765
4 ms 172.64.35.161
163 2026-08-23 17:43 639231035984577527
35 ms 172.64.35.161
162 2026-08-23 17:43 639231035984577527
35 ms 162.159.44.161
161 2026-08-23 17:43 639231035984577527
35 ms 108.162.195.161
160 2026-08-23 17:26 639231025928115303
8 ms 108.162.195.161
159 2026-08-23 17:26 639231025928115303
8 ms 162.159.44.161
158 2026-08-23 17:26 639231025928115303
8 ms 172.64.35.161
157 2026-08-23 16:34 639230994250157583
3 ms 108.162.195.161
156 2026-08-23 16:34 639230994250157583
3 ms 162.159.44.161
155 2026-08-23 16:34 639230994250157583
3 ms 172.64.35.161
154 2026-08-23 16:17 639230984476411369
4 ms 108.162.195.161
153 2026-08-23 16:17 639230984476411369
4 ms 162.159.44.161
152 2026-08-23 16:17 639230984476411369
4 ms 172.64.35.161
151 2026-08-23 16:01 639230974838373450
4 ms 108.162.195.161
150 2026-08-23 16:01 639230974838373450
4 ms 162.159.44.161
149 2026-08-23 16:01 639230974838373450
4 ms 172.64.35.161
148 2026-08-23 15:45 639230965244277645
2017 ms 108.162.195.161
147 2026-08-23 15:45 639230965244277645
2017 ms 172.64.35.161
146 2026-08-23 15:45 639230965244277645
2017 ms 162.159.44.161
145 2026-08-23 15:29 639230955522101820
7 ms 108.162.195.161
144 2026-08-23 15:29 639230955522101820
7 ms 162.159.44.161
143 2026-08-23 15:29 639230955522101820
7 ms 172.64.35.161
142 2026-08-23 15:13 639230945754521603
3 ms 108.162.195.161
141 2026-08-23 15:13 639230945754521603
3 ms 162.159.44.161
140 2026-08-23 15:13 639230945754521603
3 ms 172.64.35.161
139 2026-08-23 14:56 639230935852040504
9 ms 108.162.195.161
138 2026-08-23 14:56 639230935852040504
9 ms 162.159.44.161
137 2026-08-23 14:56 639230935852040504
9 ms 172.64.35.161
136 2026-08-23 14:40 639230926222061048
4 ms 108.162.195.161
135 2026-08-23 14:40 639230926222061048
4 ms 162.159.44.161
134 2026-08-23 14:40 639230926222061048
4 ms 172.64.35.161
133 2026-08-23 14:24 639230916449726907
22 ms 108.162.195.161
132 2026-08-23 14:24 639230916449726907
22 ms 162.159.44.161
131 2026-08-23 14:24 639230916449726907
22 ms 172.64.35.161
130 2026-08-23 14:08 639230906595053086
52 ms 108.162.195.161
129 2026-08-23 14:08 639230906595053086
52 ms 162.159.44.161
128 2026-08-23 14:08 639230906595053086
52 ms 172.64.35.161
127 2026-08-23 13:51 639230896680429441
30 ms 108.162.195.161
126 2026-08-23 13:51 639230896680429441
30 ms 162.159.44.161
125 2026-08-23 13:51 639230896680429441
30 ms 172.64.35.161
124 2026-08-23 13:34 639230886630210965
9 ms 108.162.195.161
123 2026-08-23 13:34 639230886630210965
9 ms 162.159.44.161
122 2026-08-23 13:34 639230886630210965
9 ms 172.64.35.161
121 2026-08-23 12:42 639230855430405719
28 ms 108.162.195.161
120 2026-08-23 12:42 639230855430405719
28 ms 172.64.35.161
119 2026-08-23 12:42 639230855430405719
28 ms 162.159.44.161
118 2026-08-23 12:26 639230845707499136
34 ms 108.162.195.161
117 2026-08-23 12:26 639230845707499136
34 ms 162.159.44.161
116 2026-08-23 12:26 639230845707499136
34 ms 172.64.35.161
115 2026-08-23 12:10 639230836186805419
4 ms 108.162.195.161
114 2026-08-23 12:10 639230836186805419
4 ms 162.159.44.161
113 2026-08-23 12:10 639230836186805419
4 ms 172.64.35.161
112 2026-08-23 11:54 639230826493828316
8 ms 108.162.195.161
111 2026-08-23 11:54 639230826493828316
8 ms 162.159.44.161
110 2026-08-23 11:54 639230826493828316
8 ms 172.64.35.161
109 2026-08-23 11:38 639230816817882996
12 ms 108.162.195.161
108 2026-08-23 11:38 639230816817882996
12 ms 162.159.44.161
107 2026-08-23 11:38 639230816817882996
12 ms 172.64.35.161
106 2026-08-23 11:21 639230806933854189
51 ms 108.162.195.161
105 2026-08-23 11:21 639230806933854189
51 ms 162.159.44.161
104 2026-08-23 11:21 639230806933854189
51 ms 172.64.35.161
103 2026-08-23 11:05 639230797120243854
29 ms 108.162.195.161
102 2026-08-23 11:05 639230797120243854
29 ms 172.64.35.161
101 2026-08-23 11:05 639230797120243854
29 ms 162.159.44.161
100 2026-08-23 10:49 639230787310272840
20 ms 108.162.195.161
99 2026-08-23 10:49 639230787310272840
20 ms 162.159.44.161
98 2026-08-23 10:49 639230787310272840
20 ms 172.64.35.161
97 2026-08-23 10:32 639230777600173142
2016 ms 108.162.195.161
96 2026-08-23 10:32 639230777600173142
2016 ms 162.159.44.161
95 2026-08-23 10:32 639230777600173142
2016 ms 172.64.35.161
94 2026-08-23 10:16 639230767665024593
19 ms 108.162.195.161
93 2026-08-23 10:16 639230767665024593
19 ms 172.64.35.161
92 2026-08-23 10:16 639230767665024593
19 ms 162.159.44.161
91 2026-08-23 09:59 639230757720962293
7 ms 108.162.195.161
90 2026-08-23 09:59 639230757720962293
7 ms 162.159.44.161
89 2026-08-23 09:59 639230757720962293
7 ms 172.64.35.161
88 2026-08-23 09:43 639230747722189784
5 ms 108.162.195.161
87 2026-08-23 09:43 639230747722189784
5 ms 162.159.44.161
86 2026-08-23 09:43 639230747722189784
5 ms 172.64.35.161
85 2026-08-23 08:50 639230716313923480
36 ms 108.162.195.161
84 2026-08-23 08:50 639230716313923480
36 ms 162.159.44.161
83 2026-08-23 08:50 639230716313923480
36 ms 172.64.35.161
82 2026-08-23 08:35 639230706813835990
18 ms 108.162.195.161
81 2026-08-23 08:35 639230706813835990
18 ms 162.159.44.161
80 2026-08-23 08:35 639230706813835990
18 ms 172.64.35.161
79 2026-08-23 08:18 639230696871062203
5 ms 108.162.195.161
78 2026-08-23 08:18 639230696871062203
5 ms 162.159.44.161
77 2026-08-23 08:18 639230696871062203
5 ms 172.64.35.161
76 2026-08-23 08:02 639230687142781616
2014 ms 172.64.35.161
75 2026-08-23 08:02 639230687142781616
2014 ms 108.162.195.161
74 2026-08-23 08:02 639230687142781616
2014 ms 162.159.44.161
73 2026-08-23 07:46 639230677432142227
2031 ms 108.162.195.161
72 2026-08-23 07:46 639230677432142227
2031 ms 162.159.44.161
71 2026-08-23 07:46 639230677432142227
2031 ms 172.64.35.161
70 2026-08-23 07:29 639230667686258061
10 ms 162.159.44.161
69 2026-08-23 07:29 639230667686258061
10 ms 172.64.35.161
68 2026-08-23 07:29 639230667686258061
10 ms 108.162.195.161
67 2026-08-23 07:13 639230658039243685
86 ms 108.162.195.161
66 2026-08-23 07:13 639230658039243685
86 ms 172.64.35.161
65 2026-08-23 07:13 639230658039243685
86 ms 162.159.44.161
64 2026-08-23 06:57 639230648468473803
10 ms 108.162.195.161
63 2026-08-23 06:57 639230648468473803
10 ms 172.64.35.161
62 2026-08-23 06:57 639230648468473803
10 ms 162.159.44.161
61 2026-08-23 06:41 639230638829658294
5 ms 108.162.195.161
60 2026-08-23 06:41 639230638829658294
5 ms 162.159.44.161
59 2026-08-23 06:41 639230638829658294
5 ms 172.64.35.161
58 2026-08-23 06:25 639230629247017617
10 ms 108.162.195.161
57 2026-08-23 06:25 639230629247017617
10 ms 172.64.35.161
56 2026-08-23 06:25 639230629247017617
10 ms 162.159.44.161
55 2026-08-23 06:09 639230619625318239
37 ms 108.162.195.161
54 2026-08-23 06:09 639230619625318239
37 ms 162.159.44.161
53 2026-08-23 06:09 639230619625318239
37 ms 172.64.35.161
52 2026-08-23 05:53 639230609697630264
2015 ms 172.64.35.161
51 2026-08-23 05:53 639230609697630264
2015 ms 108.162.195.161
50 2026-08-23 05:53 639230609697630264
2015 ms 162.159.44.161
49 2026-08-23 05:01 639230578570131864
-
48 2026-08-23 04:45 639230568958963168
18 ms 162.159.44.161
47 2026-08-23 04:45 639230568958963168
18 ms 108.162.195.161
46 2026-08-23 04:45 639230568958963168
18 ms 172.64.35.161
45 2026-08-23 04:29 639230559287611211
32 ms 108.162.195.161
44 2026-08-23 04:29 639230559287611211
32 ms 162.159.44.161
43 2026-08-23 04:29 639230559287611211
32 ms 172.64.35.161
42 2026-08-23 04:12 639230549524312030
26 ms 172.64.35.161
41 2026-08-23 04:12 639230549524312030
26 ms 108.162.195.161
40 2026-08-23 04:12 639230549524312030
26 ms 162.159.44.161
39 2026-08-23 03:56 639230539739801669
6 ms 108.162.195.161
38 2026-08-23 03:56 639230539739801669
6 ms 162.159.44.161
37 2026-08-23 03:56 639230539739801669
6 ms 172.64.35.161
36 2026-08-23 03:40 639230530084069375
5 ms 108.162.195.161
35 2026-08-23 03:40 639230530084069375
5 ms 162.159.44.161
34 2026-08-23 03:40 639230530084069375
5 ms 172.64.35.161
33 2026-08-23 03:24 639230520362691441
9 ms 108.162.195.161
32 2026-08-23 03:24 639230520362691441
9 ms 172.64.35.161
31 2026-08-23 03:24 639230520362691441
9 ms 162.159.44.161
30 2026-08-23 03:08 639230510677194518
10 ms 108.162.195.161
29 2026-08-23 03:08 639230510677194518
10 ms 162.159.44.161
28 2026-08-23 03:08 639230510677194518
10 ms 172.64.35.161
27 2026-08-23 02:52 639230501156002646
12 ms 162.159.44.161
26 2026-08-23 02:52 639230501156002646
12 ms 108.162.195.161
25 2026-08-23 02:52 639230501156002646
12 ms 172.64.35.161
24 2026-08-23 02:36 639230491502198541
3 ms 108.162.195.161
23 2026-08-23 02:36 639230491502198541
3 ms 162.159.44.161
22 2026-08-23 02:36 639230491502198541
3 ms 172.64.35.161
21 2026-08-23 02:20 639230481860318494
11 ms 108.162.195.161
20 2026-08-23 02:20 639230481860318494
11 ms 162.159.44.161
19 2026-08-23 02:20 639230481860318494
11 ms 172.64.35.161
18 2026-08-23 02:03 639230471893008575
3 ms 108.162.195.161
17 2026-08-23 02:03 639230471893008575
3 ms 162.159.44.161
16 2026-08-23 02:03 639230471893008575
3 ms 172.64.35.161
15 2026-08-23 01:10 639230440030877421
23 ms 172.64.35.161
14 2026-08-23 01:10 639230440030877421
23 ms 162.159.44.161
13 2026-08-23 01:10 639230440030877421
23 ms 108.162.195.161
12 2026-08-23 00:54 639230430479725508
4 ms 108.162.195.161
11 2026-08-23 00:54 639230430479725508
4 ms 162.159.44.161
10 2026-08-23 00:54 639230430479725508
4 ms 172.64.35.161
9 2026-08-23 00:38 639230420875160219
10 ms 108.162.195.161
8 2026-08-23 00:38 639230420875160219
10 ms 162.159.44.161
7 2026-08-23 00:38 639230420875160219
10 ms 172.64.35.161
6 2026-08-23 00:22 639230411240692575
7 ms 172.64.35.161
5 2026-08-23 00:22 639230411240692575
7 ms 162.159.44.161
4 2026-08-23 00:22 639230411240692575
7 ms 108.162.195.161
3 2026-08-23 00:06 639230401550806607
5 ms 108.162.195.161
2 2026-08-23 00:06 639230401550806607
5 ms 162.159.44.161
1 2026-08-23 00:06 639230401550806607
5 ms 172.64.35.161