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Credit cards only last a few years before theyre expired and replaced. I'd think only very few accounts are unwatched, after 24 months I'd think more than half of CCs would have expired anyway.

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Card networks offer services to receive updated credit card numbers for mutual customers now and have for a bunch of years.

If your credit card expires, many subscription providers will get the updated details automatically.

Here’s an article with some details on the topic: https://www.creditcards.com/credit-card-news/card-updater-se...

Thanks for the link. I've also had the utterly bizarre experience of a service charging my old card number for MONTHS after it expires, have the charges go through, THEN tell me my card is expired 3-6months later and force me to update.

Probably a related thing where they want to keep receiving revenue from me without interruption to my service, but ultimately need to confirm it's not fraud?

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