The list of Return to sender code acronyms and abbreviations.

All Return to sender code related acronyms and abbreviations.

Stands For|0Abbreviated As|0Related|17

ANK:

Attempted Not Known(Return to sender code, US Post, Postal)

Dec:

Deceased(Return to sender code, US Post, Postal)

FOE:

Forwarding Order Expired(Return to sender code, US Post, Postal)

IA:

Insufficient Address(Return to sender code, US Post, Postal)

ILL:

Illegible(Return to sender code, US Post, Postal)

NMR:

No Mail Receptacle(Return to sender code, US Post, Postal)

NS#:

No Such Number(Return to sender code, US Post, Postal)

NSA:

No Such Address(Return to sender code, US Post, Postal)

NSN:

No Such Number(Return to sender code, US Post, Postal)

NSS:

No Such Street(Return to sender code, US Post, Postal)

REF:

Refused(Return to sender code, US Post, Postal)

RTS:

Return to Sender(Return to sender code, US Post, Postal)

TA:

Temporarily Away(Return to sender code, US Post, Postal)

UAA:

Undeliverable As Addressed(Return to sender code, US Post, Postal)

UNC:

Unclaimed(Return to sender code, US Post, Postal)

UTF:

Unable To Forward(Return to sender code, US Post, Postal)

VAC:

Vacant(Return to sender code, US Post, Postal)

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APA	Smart Define. (2017). Return to sender code. Retrieved September 20, 2026, from http://smartdefine.org/return_to_sender_code/abbreviations/r
Chicago	Smart Define. 2017. "Return to sender code" http://smartdefine.org/return_to_sender_code/abbreviations/r (accessed September 20, 2026).
Harvard	Smart Define 2017, Return to sender code, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/return_to_sender_code/abbreviations/r>.
MLA	Smart Define. "Return to sender code" 16 June 2017. Web. 20 September 2026. <http://smartdefine.org/return_to_sender_code/abbreviations/r>

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