Effective February 1, 2024, the Postal Service™ will revise Labeling List(s) L004, L007, L009, L010, L011, L012, L051, L601, L605, L606, and L607 to reflect changes in mail processing operations. Mailers are expected to label according to these revised lists for mailings inducted on or after the February 1, 2024, effective date through the March 31, 2024, expiration date.
Labeling Lists
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L004 3-Digit ZIP Code Prefix Groups — ADC Sortation
Changes
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L007 5-Digit Scheme — Periodicals, Standard Mail, and Package Services Flats in Bundles
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Deleted
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L009 Mixed ADCs — Periodicals, Package Services Flats and Irregular Parcels, and Standard Mail Flats
Changes
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L010 NDC/ASF Entry — Standard Mail Letters and Package Services Irregular Parcels
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Newly Added
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L011 Non-NDC/ASF Entry — Periodicals and Standard Mail Letters
Changes
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L012 5-Digit ZIP Scheme Combination
Changes
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L051 DSCF for Parcel Select
Changes
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L601 Network Distribution Centers (NDCs)
Changes
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L605 NDCs/ASFs — Nonmachinable Parcel Select
Changes
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L606 5-Digit Scheme — Standard Mail, First-Class Mail, and Package Services Parcels
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Newly Added
Deleted
L607 3-Digit ZIP Code Sort Option for Drop-Ship Mailers
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Deleted
— Logistics, Network Development, and Support,
Network Operations, 1-11-24
