tutorialOctober 14, 2026·freeCodeCamp

How to Stop an AI Agent from Inventing Nigerian Postcodes

On 1 October 2026, Nigeria's postcode changed from six digits to an 11-character code that identifies a single building, such as EK-01-A03-FK-01. Language models trained before that date still describ

Key Takeaways

•On 1 October 2026, Nigeria's postcode changed from six digits to an 11-character code that identifies a single building, such as EK-01-A03-FK-01
•This story was reported by freeCodeCamp, covering developments in the tutorial space.
•AI advancements continue to reshape industries — read the full article on freeCodeCamp for complete coverage.

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How to Stop an AI Agent from Inventing Nigerian Postcodes

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How to Stop an AI Agent from Inventing Nigerian Postcodes

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