.bio
71,866 domains as of 3 Sep 2026
Registry details
From the IANA Root Zone Database and RDAP bootstrap.
- Registry operator
- Identity Digital Limited
- Technical backend
- Identity Digital via rdap host
- Delegated
- 2 Jun 2014
- Nameservers
- a0.nic.bio, a2.nic.bio, b0.nic.bio, c0.nic.bio
- RDAP
- https://rdap.identitydigital.services/rdap
- Zone data
- CZDS access approved — counted daily
Do people keep it?
all renewal rates ›Source: ICANN monthly registry reports
Of the 44,470 domains that came up for renewal between Jun 2025 and May 2026, the share renewed rather than deleted. How this is computed.
For comparison, the median gTLD keeps 68.71% and .com, .net and .org together keep 73.23%.
Registrar share
individual · combinedSource: ICANN monthly registry reports
Related accreditations combined into corporate families. This grouping is our inference, not ICANN's.
| Reserved for non-billable transactions where Registry Operator acts as Registrar | 1 | 100% |
|---|
61,929 attributed to registrars in May 2026, against 71,866 in 3 Sep 2026’s zone — the zone is 9,937 larger. The two are months apart, and a registry's own count also includes registrations that are not delegated in the zone. Why there are two clocks.
Domains by month, Jun 2014 – May 2026
Source: ICANN monthly registry reports
From ICANN's monthly registry reports — the registry's own count, summed across registrars. This is the long history: it reaches back to delegation, where the daily series below can only start when this site began collecting zone files.
| Month | Domains | Change | Registrars | Net adds | Deletes |
|---|---|---|---|---|---|
| May 2026 | 61,929 | ▲ +3,302 | 214 | 5,425 | 2,267 |
| Apr 2026 | 58,627 | ▲ +334 | 213 | 2,608 | 2,320 |
| Mar 2026 | 58,293 | ▲ +262 | 210 | 2,760 | 2,542 |
| Feb 2026 | 58,031 | ▲ +306 | 209 | 1,803 | 1,739 |
| Jan 2026 | 57,725 | ▼ -85 | 208 | 1,659 | 1,762 |
| Dec 2025 | 57,810 | ▲ +106 | 207 | 1,687 | 1,578 |
Showing the latest 6 of 144 months in this range. Show all 144.
Domains by day, 12 Aug 2026 – 3 Sep 2026
Source: Daily zone files
Counted from daily zone files. Names with at least one NS record or a DS record.
Daily change
Source: Daily zone files
Day-over-day difference of the zone's name list, over the same window as the chart above.
- Added
- Dropped
Registrars
Registry activity
Source: ICANN monthly registry reports
Query volumes and EPP operations reported monthly by the registry. The only public signal of how much a TLD is actually resolved rather than merely registered.
| Month | Operational registrars | DNS queries (UDP) | RDAP queries | Creates | Deletes | Renews | Transfers approved | Rejected |
|---|---|---|---|---|---|---|---|---|
| Jan 2018 | 46 | 81.65M | 0 | 2,925 | 165 | 914 | 9 | 0 |
| Dec 2017 | 34 | 79.27M | 0 | 661 | 178 | 570 | 11 | 0 |
| Nov 2017 | 34 | 70.84M | 0 | 1,267 | 188 | 698 | 4 | 0 |
| Oct 2017 | 32 | 71.53M | 0 | 653 | 582 | 789 | 4 | 0 |
| Sep 2017 | 30 | 65.14M | 0 | 633 | 426 | 1,491 | 6 | 0 |
| Aug 2017 | 30 | 74.05M | 0 | 431 | 1,041 | 2,724 | 15 | 0 |
| Jul 2017 | 28 | 67.88M | 0 | 938 | 219 | 733 | 23 | 0 |
| Jun 2017 | 26 | 64.85M | 0 | 620 | 204 | 1,385 | 48 | 0 |
| May 2017 | 25 | 64.45M | 0 | 1,336 | 376 | 760 | 15 | 0 |
| Apr 2017 | 23 | 55.84M | 0 | 5,873 | 466 | 712 | 10 | 1 |
| Mar 2017 | 22 | 55.52M | 0 | 533 | 327 | 1,365 | 22 | 6 |
| Feb 2017 | 19 | 51.16M | 0 | 572 | 347 | 1,264 | 12 | 2 |
| Jan 2017 | 76 | 2.90M | 0 | 258 | 214 | 1,119 | 26 | 1 |
| Dec 2016 | 76 | 50.10M | 0 | 291 | 165 | 470 | 40 | 1 |
| Nov 2016 | 76 | 44.56M | 0 | 285 | 641 | 563 | 40 | 4 |
| Oct 2016 | 76 | 40.41M | 0 | 299 | 520 | 1,113 | 54 | 0 |
| Sep 2016 | 76 | 37.48M | 0 | 431 | 213 | 1,351 | 23 | 0 |
| Aug 2016 | 76 | 26.38M | 0 | 711 | 179 | 3,569 | 118 | 2 |
| Jul 2016 | 75 | 34.91M | 0 | 286 | 1,414 | 523 | 21 | 1 |
| Jun 2016 | 74 | 32.69M | 0 | 1,202 | 229 | 338 | 37 | 3 |
| May 2016 | 74 | 30.86M | 0 | 680 | 191 | 417 | 22 | 2 |
| Apr 2016 | 74 | 43.74M | 0 | 420 | 534 | 1,033 | 14 | 4 |
| Mar 2016 | 73 | 29.97M | 0 | 1,165 | 263 | 888 | 23 | 2 |
| Feb 2016 | 73 | 28.50M | 0 | 809 | 285 | 688 | 22 | 0 |
| Jan 2016 | 72 | 27.01M | 0 | 688 | 373 | 589 | 33 | 1 |
| Dec 2015 | 70 | 25.21M | 0 | 285 | 77 | 330 | 20 | 0 |
| Nov 2015 | 70 | 23.18M | 0 | 381 | 173 | 586 | 13 | 0 |
| Oct 2015 | 70 | 21.69M | 0 | 1,589 | 539 | 409 | 32 | 0 |
| Sep 2015 | 69 | 17.06M | 0 | 647 | 41 | 1,105 | 30 | 4 |
| Aug 2015 | 66 | 17.37M | 0 | 352 | 46 | 4,059 | 66 | 2 |
| Jul 2015 | 66 | 15.74M | 0 | 297 | 14 | 242 | 178 | 0 |
| Jun 2015 | 62 | 15.94M | 0 | 305 | 9 | 41 | 19 | 0 |
| May 2015 | 60 | 14.92M | 0 | 412 | 5 | 5 | 10 | 1 |
| Apr 2015 | 59 | 14.43M | 0 | 2,303 | 18 | 7 | 13 | 0 |
| Mar 2015 | 59 | 12.70M | 0 | 854 | 41 | 2 | 6 | 1 |
| Feb 2015 | 58 | 9.82M | 0 | 723 | 13 | 1 | 6 | 6 |
| Jan 2015 | 58 | 9.80M | 0 | 558 | 10 | 2 | 3 | 62 |
| Dec 2014 | 58 | 11.51M | 0 | 393 | 17 | 5 | 11 | 3 |
| Nov 2014 | 58 | 10.38M | 0 | 871 | 8 | 2 | 5 | 0 |
| Oct 2014 | 56 | 9.96M | 0 | 482 | 4 | 0 | 1 | 0 |
| Sep 2014 | 56 | 10.66M | 0 | 1,498 | 129 | 3 | 0 | 0 |
| Aug 2014 | 55 | 7.18M | 0 | 16,719 | 15 | 6 | 0 | 0 |
| Jul 2014 | 43 | 3.51M | 0 | 188 | 0 | 0 | 0 | 0 |
| Jun 2014 | 43 | 2.78M | 0 | 14 | 0 | 0 | 0 | 0 |
Data currency. Domain counts on this page are from zone files dated and refresh daily. Registrar figures are from ICANN's monthly registry reports for May 2026, which ICANN publishes about three months in arrears; zone files contain no registrar information, so no fresher source exists. Full detail on methodology and live pipeline status.