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Network Latency

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This grid displays the network latency of pings between each monitoring location in the Dotcom-Monitor cloud network. With over two dozen monitoring locations throughout the world, the Dotcom-Monitor network serves as a standard baseline for detecting trends in backbone latency communication issues as well as regional outages and slowdowns.

  Madrid Beijing Sydney Copenhagen Seattle IPv6 San Franciso Mumbai Warsaw Paris Johannesburg Buenos Aires Shanghai Tokyo N. Virginia Washington DC Tel-Aviv Amsterdam Dallas Brisbane Denver Frankfurt Montreal Hong Kong Miami San Francisco London New York Minneapolis
Madrid 1 177 263 47 164 134 133 66 25 203 251 302 251 89 93 98 30 128 269 109 36 113 171 130 133 42 90 118
Beijing 177 1 266 223 276
 
259 298 204 372 364 33 93 228 232 216 233 268 430 288 177 226 42 217 188 240 215 226
Sydney 268 266 1 276 154 156 270 293 240 372 362 153 160 249 232 318 285 188 12 175 309 211 120 222 153 262 210 197
Copenhagen 47 223 276 1 165
 
147 23 22 164 248 203 247 132 96 69 13 133 268 120 15 97 184 118 143 25 88 122
Seattle 169 276 154 164 1
 
264 176 146 288 207 257 111 76 67 190 131 52 179 28 141 69 134 71 19 142 59 48
IPv6 San Franciso 133
 
156 144
 
1
 
 
 
 
 
 
 
 
60
 
134 39 169 27 155
 
 
71
 
134 64 52
Mumbai 133 258 270 147 264
 
1 164 127 289 353 257 132 213 269 186 144 256 173 257 134 229 101 231 257 139 205 237
Warsaw 62 298 293 23 176
 
164 1 37 176 249 301 263 113 117 92 28 144 281 147 33 106 198 127 175 40 101 146
Paris 42 220 240 22 146
 
127 37 1 179 226 241 274 82 78 67 15 111 249 112 15 84 174 108 135 10 72 103
Johannesburg 202 421 372 164 290
 
364 176 179 1 394 287 432 227 251 202 170 261 429 253 160 216 344 234 278 143 209 273
Buenos Aires 251 364 362 248 207
 
353 248 226 394 1 353 304 145 155 276 225 169 358 195 228 152 356 141 199 220 151 172
Shanghai 283 33 153 180 235
 
257 308 241 287 358 1 67 201 217 278 196 307 411 251 214 223 36 227 171 246 229 179
Tokyo 251 93 160 247 111
 
132 263 274 433 304 67 1 172 164 287 253 150 111 113 306 168 54 166 107 232 174 205
N. Virginia 102 232 209 101 76
 
212 113 82 227 145 202 172 1 1 136 89 32 234 36 105 25 213 26 60 88 8 29
Washington DC 93 232 232 96 67 60 269 117 80 250 155 217 164 1 1 148 87 38 301 47 87 15 226 23 69 76 7 26
Tel-Aviv 94 216 319 69 190
 
186 92 67 202 276 257 287 136 147 1 58 164 309 167 50 136 238 153 186 59 132 155
Amsterdam 30 232 270 13 131 134 144 30 16 170 225 200 253 89 87 58 1 110 256 110 11 82 188 117 134 8 75 104
Dallas 128 268 188 133 52 39 256 144 111 255 168 291 150 32 38 164 110 1 195 22 118 44 188 29 38 109 37 36
Brisbane 254 429 12 268 179 169 173 281 249 429 358 409 111 234 301 309 256 195 1 186 255 233 124 224 164 279 230 210
Denver 109 288 175 119 28 27 259 147 112 253 195 252 112 36 47 167 110 22 185 1 119 43 163 47 25 109 40 26
Frankfurt 36 176 291 15 141 173 134 33 15 160 228 217 306 104 87 50 11 118 255 118 1 90 169 114 145 17 80 113
Montreal 108 226 211 97 69
 
229 106 84 216 152 224 168 16 15 136 82 44 233 43 93 1 193 34 75 78 10 43
Hong Kong 171 42 120 184 134
 
101 198 174 344 356 34 53 213 254 238 188 188 124 164 169 193 1 218 159 185 202 198
Miami 130 217 222 118 71 86 231 127 108 233 141 215 166 26 23 153 117 29 224 47 114 34 218 1 73 100 27 43
San Francisco 133 188 152 143 20 1 257 174 135 288 199 171 107 60 68 186 134 39 164 25 145 75 159 73 1 134 66 49
London 35 240 262 25 142 133 139 40 10 143 220 262 232 88 74 59 8 109 279 109 17 78 210 100 134 1 77 97
New York 94 215 210 96 61 81 207 100 72 209 144 222 175 8 9 132 75 37 229 40 83 9 202 26 66 76 1 30
Minneapolis 118 226 197 123 47 52 237 146 103 273 172 179 205 28 26 155 104 34 210 26 113 43 198 42 49 98 30 1

What is Network Latency?

Network latency is the delay in time it takes information (packets) to travel from one node or location to another. This grid reveals any locations that are consistently performing slower that the average locations. Each monitoring location is situated in a Tier 3 data center with multiple pipelines connected directly to the backbone internet providers in that geographic region. Dotcom-Monitor performs thousands of tests to websites, servers and other online systems around the world each minute, so we understand the importance of backbone latency as well as the broader network latency in between the many different nodes along the path of internet traffic.

Test Network Latency

There are several interesting observations when you begin to study the network latency grid. The first to stand out is the stream of 1s diagonally down the page - this is because there is never any lag between a host and itself. You can see a similar result on your local machine by opening a command line and typing: ping localhost. The result should be <1ms which means that it takes less than one millisecond to ping itself.

You may also notice gaps in the grid, particularly between the IPv6 only locations and the locations that are IPv4 only - if the node is unable to communicate using IPv6 or does not have an IPv6 address, then no results will be shown.

Feel free to bookmark this page to come back and perform a quick check of overall internet backbone health.

Great Firewall of China

You may notice that most of the network latency results to and from the Shanghai China monitoring location are orders of magnitude higher than the rest of the locations. This is due to the amount of filtering on internet traffic by the Chinese government. In fact, there are many public websites such as Google, YouTube and Facebook that are completely blocked by the Great Firewall of China. Another reason for higher latency is due to a poorer infrastructure in China than other Western countries.

Additional Network Tools

For additional analytics feel free to navigate to the free tools section of Dotcom-Monitor where you can perform custom ping, traceroute or website speed tests. If you're here troubleshooting network latency issues with a website or server that you manage, please sign up for a free trial for 30 days and gain complete access to the entire suite of Dotcom-Monitor tools to help troubleshoot issues with your network, website availability and much more.