Bluesky · Free Tool

Bluesky Username Checker

Check if a Bluesky handle is available. Bluesky uses subdomain-style handles (<handle>.bsky.social by default) — most short common names are still free as the network grows.

Best practices

How to pick a Bluesky handle while the SERP is still wide open

Bluesky launched publicly in 2024 and crossed 30M users in 2025 — most short common handles are still available. The window for getting a clean handle is open but closing.

1

Default form is <handle>.bsky.social

Every Bluesky user gets a subdomain-style handle by default (e.g. yourname.bsky.social). The short part is what we check — and what shows in user-facing UIs.

2

You can use any domain you own as your handle

Add a TXT DNS record and your domain becomes your Bluesky handle (e.g. yourname.com). This is unique to Bluesky and a strong brand-verification signal.

3

Lowercase letters, digits, hyphens — that's it

No underscores, no periods (the dot is structural). Bluesky's charset is the strictest of the major platforms.

4

3–18 character window

Bluesky enforces 3-character minimum and 18-character maximum on the leftmost label. Most brand names fit comfortably.

5

The official API is fast and clean

Bluesky exposes a real public API (`com.atproto.identity.resolveHandle`) we use to check definitively. No HTML parsing, no anti-bot challenges, no maybes — green or red.

Why this fails

Why a Bluesky handle might be unavailable

Bluesky's rules are simpler than the legacy platforms — most "unavailable" verdicts are real.

Already claimed (most cases)

Unlike Instagram or TikTok, Bluesky doesn't reserve handles for brand-protection. If our check returns "taken" it almost always means a real account exists.

Reserved system handles

A few system handles (`bsky.app`, `atproto`, `bluesky`, `support`) are reserved for the protocol team. Most users will never bump into these.

Length and charset rejections

Trying to claim a handle with underscores or periods will reject at signup with "invalid handle." Our validator catches these as you type.

Who uses this

Who uses the Bluesky username checker

Bluesky is in the land-grab phase — the audiences below have the most to gain from claiming early.

X migrants

Moving from X to Bluesky and want the same handle. Verify first — most short X handles are still free on Bluesky as of mid-2026.

Brand-protection teams

Even if your brand isn't active on Bluesky yet, claim the handle before someone impersonates you. Bluesky has no rapid takedown for impersonators yet — prevention is cheaper.

Anyone eyeing a custom-domain handle

Check that your default-form handle is free before setting up the DNS-based custom-domain version. The two need to coexist; the default is your fallback.

Username rules per platform

Each platform has its own format rules. The handles that work everywhere stick to letters, digits, and at most one underscore.

PlatformLengthAllowed charactersNotes
Instagram1–30a–z, 0–9, . _No leading/trailing dot, no consecutive dots
TikTok2–24a–z, 0–9, . _No leading dot
YouTube3–30a–z, 0–9, . _ -Custom handles launched late 2022
X (Twitter)4–15a–z, 0–9, _Tightest length cap — drives the cross-platform ceiling
Threads1–30a–z, 0–9, . _Same pool as Instagram
Bluesky3–18a–z, 0–9, -Default form is <handle>.bsky.social
GitHub1–39a–z, 0–9, single hyphensNo consecutive hyphens, no leading/trailing
FAQ

Bluesky username — frequently asked questions

By default, every Bluesky handle is <yourname>.bsky.social. You can also use any domain you own as your handle (e.g. yourname.com) by adding a DNS TXT record. Most users stick with the default; we check the default form here.

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