# My Old Number

> An independent, plain-English guide to what happens to a phone number after you cancel it — aging periods, reassignment, the two-factor security risk, and how to keep a number you care about.

## Key facts (agent-safe)

- Disconnected phone numbers enter an aging/quarantine period (industry minimum on the order of 45 days; carriers often hold longer).
- After aging, the number is reassigned to a new subscriber, who inherits calls, texts, and any two-factor codes still pointed at it.
- The main practical risk is unlinked 2FA / account recovery: unlink accounts before canceling a number.
- To keep a number: port it (started while active) or park it cheaply (e.g. Google Voice).
- Bereavement: transfer billing responsibility, back up voicemails first, then park the number.

## Tools (WebMCP)

- get_number_aging_summary — plain-English aging/reassignment summary.
- get_2fa_unlink_checklist — prioritized unlink checklist.
- recommend_next_step — next-best guide by situation.
- get_exit_kit — free Exit Kit by email (opt-in).
- get_free_number_lookup — free offline phone number check (format, area code, line-type hints).

## Pages

- [/](https://myoldnumber.com/) — homepage
- [/archive](https://myoldnumber.com/archive) — all guides
- [/lookup](https://myoldnumber.com/lookup) — free phone number lookup tool
- [/exit-kit](https://myoldnumber.com/exit-kit) — free checklist
- [/monitoring](https://myoldnumber.com/monitoring) — number monitoring (waitlist)
- [/loved-one-number](https://myoldnumber.com/loved-one-number) — keep a loved one's number
- [/es/](https://myoldnumber.com/es/) — español