Domain extension

.int

Original (1985 to 1988) · Internet Assigned Numbers Authority

.int
🔒 Signed (DS in the root)
Category
Original (1985 to 1988)
IANA type
Generic
Manager
Internet Assigned Numbers Authority
Script
Latin
DS in root
1 record(s)
Algorithm
13 · ECDSA P-256
Second-level
1 suffixes
IDN names
no IDN tables at IANA
WHOIS
whois.iana.org
RDAP
yes

Checked 26 Oct 2026 by our weekly check.

Is a .int name registered?

Looked up from your browser in the registry's RDAP service; if that does not answer, in DNS. Nothing is stored on dnssec.in.

What this means

The root zone holds a DS record for .int, so the extension is signed and anchored. A domain under .int can use DNSSEC with a full chain of trust: it needs to be signed at its DNS host and have its own DS at the registrar.

Second-level suffixes under .int (1)

You can register names directly under .int or under these suffixes, for example example.eu.int. Some are restricted to certain users (government, education, banks). Source: the Public Suffix List.

  • .eu.int

IDN names under .int

No IDN tables for .int at IANA: names are usually ASCII only (a–z, 0–9 and hyphen).

Length

DNS limits are the same everywhere: each label is 1 to 63 characters, the whole name at most 253, letters, digits and hyphens, not starting or ending with a hyphen. IDN labels count their xn-- form, so fewer native characters fit. A registry can set a higher minimum (often 2 or 3 characters) or reserve short names: that is in its own policy.

WHOIS and RDAP

RDAP (the JSON successor to WHOIS) answers at https://rdap.iana.org/. Classic WHOIS (port 43) answers at whois.iana.org. For most gTLD names the owner's contact details are redacted for privacy; the registrar, dates and status are public.

Lifecycle and drop

A restricted extension: who may register, and what happens at expiry, is set by its registry under its own rules, not by the usual ICANN registrar process.

More: Original (1985 to 1988)

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