c21.*
The name “c21” exists in 90 top-level domains that dot.bi can see: 66 known from zone files, certificates or seed lists, 24 more answering DNS right now. Exact only for TLDs with an imported zone file.
Known registrations
| Domain | TLD | Known from | First observed | Hosting | Status |
|---|---|---|---|---|---|
| c21.app | .app | Zone file | 2026-10-13 | — | in zone |
| c21.ch | .ch | Zone file | 2026-10-13 | — | in zone |
| c21.fr | .fr | Zone file | 2026-10-13 | — | in zone |
| c21.info | .info | Zone file | 2026-10-13 | — | in zone |
| c21.online | .online | Zone file | 2026-10-13 | — | in zone |
| c21.org | .org | Zone file | 2026-10-13 | — | in zone |
| c21.pro | .pro | Zone file | 2026-10-13 | — | in zone |
| c21.shop | .shop | Zone file | 2026-10-13 | — | in zone |
| c21.site | .site | Zone file | 2026-10-13 | — | in zone |
| c21.store | .store | Zone file | 2026-10-13 | — | in zone |
| c21.xyz | .xyz | Zone file | 2026-10-13 | — | in zone |
| c21.asia | .asia | Zone file | 2026-10-13 | — | in zone |
| c21.best | .best | Zone file | 2026-10-13 | — | in zone |
| c21.bet | .bet | Zone file | 2026-10-13 | — | in zone |
| c21.bio | .bio | Zone file | 2026-10-13 | — | in zone |
| c21.business | .business | Zone file | 2026-10-13 | — | in zone |
| c21.buzz | .buzz | Zone file | 2026-10-13 | — | in zone |
| c21.ca | .ca | Majestic Million | 2026-10-13 | — | — |
| c21.careers | .careers | Zone file | 2026-10-13 | — | in zone |
| c21.casino | .casino | Zone file | 2026-10-13 | — | in zone |
| c21.chat | .chat | Zone file | 2026-10-13 | — | in zone |
| c21.cloud | .cloud | Zone file | 2026-10-13 | — | in zone |
| c21.com.cn | .cn | Majestic Million | 2026-10-13 | — | — |
| c21.com | .com | Majestic Million | 2026-10-13 | — | — |
| c21.cymru | .cymru | Zone file | 2026-10-13 | — | in zone |
| c21.dev | .dev | Zone file | 2026-10-13 | — | in zone |
| c21.digital | .digital | Zone file | 2026-10-13 | — | in zone |
| c21.forsale | .forsale | Zone file | 2026-10-13 | — | in zone |
| c21.fun | .fun | Zone file | 2026-10-13 | — | in zone |
| c21.fyi | .fyi | Zone file | 2026-10-13 | — | in zone |
| c21.global | .global | Zone file | 2026-10-13 | — | in zone |
| c21.guru | .guru | Zone file | 2026-10-13 | — | in zone |
| c21.hk | .hk | Majestic Million | 2026-10-13 | — | — |
| c21.homes | .homes | Majestic Million, Zone file | 2026-10-13 | — | in zone |
| c21.house | .house | Zone file | 2026-10-13 | — | in zone |
| c21.immo | .immo | Zone file | 2026-10-13 | — | in zone |
| c21.lat | .lat | Zone file | 2026-10-13 | — | in zone |
| c21.li | .li | Zone file | 2026-10-13 | — | in zone |
| c21.life | .life | Zone file | 2026-10-13 | — | in zone |
| c21.link | .link | Zone file | 2026-10-13 | — | in zone |
| c21.live | .live | Zone file | 2026-10-13 | — | in zone |
| c21.ltd | .ltd | Zone file | 2026-10-13 | — | in zone |
| c21.maison | .maison | Zone file | 2026-10-13 | — | in zone |
| c21.marketing | .marketing | Zone file | 2026-10-13 | — | in zone |
| c21.mobi | .mobi | Zone file | 2026-10-13 | — | in zone |
| c21.news | .news | Zone file | 2026-10-13 | — | in zone |
| c21.ninja | .ninja | Zone file | 2026-10-13 | — | in zone |
| c21.onl | .onl | Zone file | 2026-10-13 | — | in zone |
| c21.pics | .pics | Zone file | 2026-10-13 | — | in zone |
| c21.promo | .promo | Zone file | 2026-10-13 | — | in zone |
| c21.properties | .properties | Zone file | 2026-10-13 | — | in zone |
| c21.property | .property | Zone file | 2026-10-13 | — | in zone |
| c21.sale | .sale | Zone file | 2026-10-13 | — | in zone |
| c21.sk | .sk | Zone file | 2026-10-13 | — | in zone |
| c21.solutions | .solutions | Zone file | 2026-10-13 | — | in zone |
| c21.space | .space | Zone file | 2026-10-13 | — | in zone |
| c21.team | .team | Zone file | 2026-10-13 | — | in zone |
| c21.tech | .tech | Zone file | 2026-10-13 | — | in zone |
| c21.technology | .technology | Zone file | 2026-10-13 | — | in zone |
| c21.today | .today | Zone file | 2026-10-13 | — | in zone |
| c21.tokyo | .tokyo | Zone file | 2026-10-13 | — | in zone |
| c21.vlaanderen | .vlaanderen | Zone file | 2026-10-13 | — | in zone |
| c21.website | .website | Zone file | 2026-10-13 | — | in zone |
| c21.wine | .wine | Zone file | 2026-10-13 | — | in zone |
| c21.world | .world | Zone file | 2026-10-13 | — | in zone |
| c21.wtf | .wtf | Zone file | 2026-10-13 | — | in zone |
Live DNS check on popular TLDs
Highlighted TLDs answered DNS. A grey TLD means no nameservers answered, which is not the same as “available”: registered names without DNS are invisible here.