Knowledge

NTP pool

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of this project, accurate statistics on the number of clients cannot be obtained, but according to the project's website, the pool provides time to 5–15 million systems. Because of client growth, the project is in perpetual need of more servers.
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This project was started by Adrian von Bidder in January 2003 after a discussion on comp.protocols.time.ntp about abuse of the public stratum 1 servers. The system has been maintained and developed by Ask Bjørn Hansen since July 2005.
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The more time servers there are in the pool, the lower the resource demand on each member. Joining the pool requires at least a
99:. Work is being done to make the geographic zone selection unnecessary via customized authoritative DNS servers that utilize 357: 139: 398: 393: 350: 77: 236: 224: 326: 100: 84: 92: 248: 115: 96: 162: 311: 204: 334: 264: 377: 127: 130:, and accurate time from another source (for example, another NTP server, a 123: 88: 80:
to clients worldwide. The machines that are "in the pool" are part of the
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Dynamic collection of networked computers providing time synchronization
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As of May 2022, the pool consists of 3,126 active servers on
135: 111: 107: 73: 183: 29: 305: 279:. Adrian 'Dagurashibanipal' von Bidder. January 27, 2003. 338: 291:. Adrian 'Dagurashibanipal' von Bidder. July 24, 2005. 44: 24: 358: 8: 19: 365: 351: 310: 72:that volunteer to provide highly accurate 18: 289:"The Future is Bright, The Future is ..." 225:"Reached 500 servers - Welcome Slashdot" 154: 95:and are distributed to NTP clients via 227:. Ask Bjørn Hansen. January 15, 2006. 126:connection to the Internet, a static 68:is a dynamic collection of networked 7: 323: 321: 239:. Ask Bjørn Hansen. August 11, 2009. 333:This Internet-related article is a 251:. Ask Bjørn Hansen. June 21, 2012. 237:"Yes, the pool needs more servers" 14: 249:"The NTP Pool needs more servers" 389:Free software programmed in Perl 325: 277:"ntp DNS round robin experiment" 1: 384:Network time-related software 163:"What the NTP Pool can offer" 337:. You can help Knowledge by 110:and 1,534 active servers on 50:; 21 years ago 415: 320: 140:GPS disciplined oscillator 261:"Public servers abuse" 87:as well as of several 78:Network Time Protocol 101:geolocation software 267:. January 21, 2003. 21: 184:"All Pool Servers" 346: 345: 114:. Because of the 93:geographical zone 62: 61: 406: 367: 360: 353: 329: 322: 314: 309: 308: 306:Official website 292: 286: 280: 274: 268: 258: 252: 246: 240: 234: 228: 222: 216: 215: 213: 211: 201: 195: 194: 192: 190: 180: 174: 173: 171: 169: 159: 116:decentralization 58: 56: 51: 40: 37: 35: 33: 31: 22: 414: 413: 409: 408: 407: 405: 404: 403: 374: 373: 372: 371: 318: 304: 303: 300: 295: 287: 283: 275: 271: 259: 255: 247: 243: 235: 231: 223: 219: 209: 207: 205:"Pool Capacity" 203: 202: 198: 188: 186: 182: 181: 177: 167: 165: 161: 160: 156: 152: 138:receiver, or a 97:round-robin DNS 54: 52: 49: 28: 17: 12: 11: 5: 412: 410: 402: 401: 399:Internet stubs 396: 391: 386: 376: 375: 370: 369: 362: 355: 347: 344: 343: 330: 316: 315: 299: 298:External links 296: 294: 293: 281: 269: 265:David L. Mills 253: 241: 229: 217: 196: 175: 153: 151: 148: 60: 59: 46: 42: 41: 26: 15: 13: 10: 9: 6: 4: 3: 2: 411: 400: 397: 395: 394:Perl software 392: 390: 387: 385: 382: 381: 379: 368: 363: 361: 356: 354: 349: 348: 342: 340: 336: 331: 328: 324: 319: 313: 307: 302: 301: 297: 290: 285: 282: 278: 273: 270: 266: 262: 257: 254: 250: 245: 242: 238: 233: 230: 226: 221: 218: 206: 200: 197: 185: 179: 176: 164: 158: 155: 149: 147: 143: 141: 137: 133: 129: 125: 120: 117: 113: 109: 104: 102: 98: 94: 90: 86: 83: 79: 75: 71: 67: 47: 43: 39: 27: 23: 339:expanding it 332: 317: 284: 272: 256: 244: 232: 220: 208:. Retrieved 199: 189:December 14, 187:. Retrieved 178: 166:. Retrieved 157: 144: 134:receiver, a 121: 105: 82:pool.ntp.org 81: 65: 63: 91:divided by 378:Categories 150:References 128:IP address 89:subdomains 168:April 29, 124:broadband 70:computers 210:April 2, 76:via the 66:NTP pool 45:Launched 32:.ntppool 20:NTP pool 53: ( 85:domain 132:DCF77 335:stub 212:2018 191:2019 170:2011 136:WWVB 112:IPv6 108:IPv4 74:time 64:The 55:2003 48:2003 34:.org 142:). 36:/en 30:www 25:URL 380:: 263:. 103:. 366:e 359:t 352:v 341:. 214:. 193:. 172:. 57:) 38:/

Index

www.ntppool.org/en/
computers
time
Network Time Protocol
domain
subdomains
geographical zone
round-robin DNS
geolocation software
IPv4
IPv6
decentralization
broadband
IP address
DCF77
WWVB
GPS disciplined oscillator
"What the NTP Pool can offer"
"All Pool Servers"
"Pool Capacity"
"Reached 500 servers - Welcome Slashdot"
"Yes, the pool needs more servers"
"The NTP Pool needs more servers"
"Public servers abuse"
David L. Mills
"ntp DNS round robin experiment"
"The Future is Bright, The Future is ..."
Official website
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