This chart shows the serial number changes as sampled between 9/4 2pm through 9/5/2003 2pm Pacific Time Zone for a subset of active ccTLDs - some of which are SLD stubs.
Only the most significant digits of the serial numbers are shown (for brevity). Serial number changes are noted in BOLD.
| TLD | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm |
| at | 403 | 403 | 403 | 403 | 403 | 403 | 403 | 403 | 403 | 403 | 403 | 500 | 500 | 500 | 500 | 501 | 501 | 501 | 501 | 502 | 502 | 502 | 502 | 503 | 503 |
| be | 405 | 405 | 405 | 405 | 405 | 405 | 405 | 501 | 501 | 501 | 501 | 502 | 502 | 502 | 502 | 503 | 503 | 503 | 504 | 504 | 504 | 504 | 504 | 504 | 505 |
| bz | 470 | 474 | 478 | 482 | 486 | 490 | 494 | 500 | 504 | 508 | 512 | 516 | 520 | 524 | 528 | 532 | 537 | 541 | 545 | 549 | 553 | 557 | 561 | 565 | 570 |
| de | 462 | 462 | 462 | 462 | 462 | 462 | 462 | 462 | 462 | 525 | 525 | 525 | 525 | 525 | 525 | 525 | 525 | 525 | 525 | 568 | 568 | 568 | 568 | 568 | 568 |
| jp | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 601 | 601 |
| com.mx | 1458 | 1458 | 1459 | 1459 | 1459 | 1459 | 1459 | 1459 | 1459 | 1459 | 1459 | 1459 | 1459 | 1459 | 1459 | 1459 | 1459 | 1459 | 1460 | 1460 | 1461 | 1461 | 1461 | 1462 | 1462 |
| co.nz | 520 | 520 | 520 | 520 | 548 | 548 | 548 | 560 | 560 | 560 | 572 | 572 | 572 | 572 | 588 | 588 | 588 | 588 | 588 | 588 | 588 | 620 | 620 | 620 | 620 |
| net.nz | 488 | 488 | 488 | 488 | 548 | 548 | 548 | 560 | 560 | 560 | 572 | 572 | 572 | 572 | 572 | 572 | 572 | 572 | 572 | 572 | 572 | 620 | 620 | 620 | 620 |
| org.nz | 488 | 488 | 488 | 488 | 548 | 548 | 548 | 560 | 560 | 560 | 572 | 572 | 572 | 572 | 588 | 588 | 588 | 588 | 588 | 588 | 588 | 588 | 588 | 588 | 588 |
| co.uk | 402 | 402 | 402 | 402 | 402 | 402 | 402 | 402 | 402 | 402 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 |
| me.uk | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 |
| org.uk | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 401 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 | 501 |
| at | Appears to be updating 4 times a day during local business hours | ||||||||||||||||||||||||
| be | Appears to be publishing @ erratic intervals, about 5 times a day | ||||||||||||||||||||||||
| bz | Updates every 15 minutes per contract | ||||||||||||||||||||||||
| de | twice a day at 11am and 9pm | ||||||||||||||||||||||||
| jp | once a day at 1pm | ||||||||||||||||||||||||
| com.mx | erratic, not sure | ||||||||||||||||||||||||
| nz | every 3 hours or so - inconsistent in frequency and net.nz lags | ||||||||||||||||||||||||
| uk | once a day, maybe twice (co.uk) | ||||||||||||||||||||||||