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  3. USNLR2401063

ISRC

USNLR2401063

Knock Knock✓2

Song: KNOCK KNOCK

Hildur Guðnadóttir
unmatchedNot yet matched in the MLC database

Last verified: August 23, 2026

USNLR2401063 is the International Standard Recording Code (ISRC) for the recording “Knock Knock” by Hildur Guðnadóttir. ISRCs are 12-character ISO 3901 identifiers that uniquely tag a specific sound recording — different masters, remixes, and live versions each receive a distinct ISRC.

Format

USCountry
NLRRegistrant
24Year (2024)
01063Designation
Country:
ISO 3166-1 alpha-2 country code (US).
Registrant:
3-character code identifying the label or distributor that assigned this ISRC.
Year (2024):
Last two digits of the reference year (2024). Years < 50 are 21st century.
Designation:
Unique 5-digit code assigned by the registrant for this specific recording.

People also ask

What is the ISRC for "Knock Knock" by Hildur Guðnadóttir?+
The ISRC for "Knock Knock" by Hildur Guðnadóttir is USNLR2401063.
What is an ISRC and what does it tell you?+
An ISRC (International Standard Recording Code) is a 12-character ISO 3901 identifier that uniquely tags a specific sound recording. The first two characters are the country code, the next three are the registrant (label or distributor), the next two are the year, and the last five are a unique recording number.

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What is ISRC USNLR2401063?

USNLR2401063 is an International Standard Recording Code (ISRC) that uniquely identifies the recording “Knock Knock” by Hildur Guðnadóttir. ISRCs are 12-character alphanumeric codes defined by ISO 3901, used globally by streaming platforms, record labels, and rights organizations to track plays and distribute royalties.

Learn more about ISRCs · Powered by Notes.fm

Musical work link not available yet

This ISRC still identifies a valid recording; the available sources have not yet connected it to an ISWC for the underlying composition. Available release, performer, producer, and songwriter links remain visible below.

Who wrote this song?

HILDUR GUDNADOTTIRComposerLyricist
IPI: 00404881659
WARNER-BARHAM MUSIC LLC OriginalPublisherIPI: 00358203370
SONGS OF UNIVERSAL, INC. RightsAdministratorIPI: 00353271280

Who publishes this song?

WARNER-BARHAM MUSIC LLCOriginalPublisher
IPI: 00358203370
SONGS OF UNIVERSAL, INC.RightsAdministrator
IPI: 00353271280

Credits Graph

MLC Song Code

KI2L6O
Verify on MLC Portal →
SourcesMusicBrainzMLCMLC✓3 sources

Verified on

  • MusicBrainz recording record
  • MLC song record
Listen on Apple Music

Who performed on this recording?

Performers

Hildur GuðnadóttirPerformer

Release

  • Joker: Folie à deux: Score From the Original Motion Picture Soundtrack

MLC Registration

✗Not registered

MLC has no work registered for this ISRC.

Hildur Guðnadóttir

USNLR2401063 is the International Standard Recording Code (ISRC) for the recording “Knock Knock” by Hildur Guðnadóttir. ISRCs are 12-character ISO 3901 identifiers that uniquely tag a specific sound recording — different masters, remixes, and live versions each receive a distinct ISRC.

Hildur Guðnadóttir

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