DSF2 – Delivery Sequence File Second Generation

DSF2 – Delivery Sequence File Second Generation – improves the delivery of mailings and assists in targeting mail and reducing postal costs.

Simple Input Requirements >> | Output Layout & Data Definitions >>

Based on a U.S. Postal Service (USPS) approved matching process, DSF2 service identifies inaccurate and incomplete addresses on mailing lists by validating them against the USPS master database of all 165+ million delivery points.

DSF2 processing additionally provides other important address attributes allowing for more targeted mailings. It classifies addresses as residential or business, identifies the delivery type and flags seasonal and vacant addresses.

DSF2 further appends mail codes that can be used to qualify for USPS Enhanced Carrier Route (ECR) Basic, High Density and Saturation postal discounts. These include Pseudo Delivery Sequence Numbers for walk sequence postal presort discounts and Enhanced Line of Travel codes (eLOT).

With DSF2 you also receive additional services to enhance your mailing lists: Address Standardization with CASS certification, Delivery Point Validation (DPV) and Locatable Address Conversion System updates (LACSLink).

What else is special about our DSF2 service? To maximize results each file is checked before processing to look for problems. The input data is optimized for the best outcome.

• DSF2 – Delivery Sequence File Second Generation – validation against the USPS master database of all 165+ million delivery points
• DSF2 Mail Score—helps sort and filter mailing lists based on probable delivery
• Address type:
  • Street
  • Highrise
  • PO Box
  • General Delivery
  • Rural Route or Highway Contract
• Delivery type:
  • Residential
  • Business
• Delivery type:
  • Curb-side mailbox
  • Door-slot
  • Neighborhood Delivery and Collection Box Unit (NDCBU)
  • Central delivery
• Seasonal delivery information
• Vacant address information
• Mail codes that can be used to qualify for USPS Enhanced Carrier Route (ECR) Basic, High Density and Saturation postal discounts
  • Pseudo Delivery Sequence Numbers for walk sequence postal presort discounts
  • Enhanced Line of Travel (eLOT) numbers
• DSF2 footnotes
• Address Standardization with CASS certification:
  • CASS Report—certifies your list is ZIP+4 coded
  • ZIP Code updates
  • Plus4 Codes
  • Carrier Routes
  • Delivery Point Barcodes (DPBC)
  • State abbreviations
  • Spelling corrections
  • Directional, suffix and unit designator adjustments
  • City name corrections
• Delivery Point Validation (DPV)
• Locatable Address Conversion System updates (LACSLink) – converts some PO Box and rural route addresses to city-style addresses and corrects addresses that have been renumbered or renamed
• DSF2 is an essential list maintenance tool:
  • Increases the deliverability of mail
  • Assists in targeting mail
• Preprocessing Optimization:
  • Each file is checked before processing to look for problems
  • Input data is optimize for the best results
• Friendly return file
• Easy-to-read statistics on your DSF2 – Delivery Sequence File Second Generation – service
• Next business day turnaround

DSF2 – Delivery Sequence File Second Generation – can be purchased using our online order form or fax order form. You will be able to select additional data processing services to be run at the same time.

Online Order Form >> | Fax Order Form >>

Notes

The U.S. Postal Service requires each DSF2 customer to complete a Processing Acknowledgement Form once every 12 months. A link to this form and instructions will be sent with your order confirmation.

Customers new to DSF2 or Address Hygiene Services will want to review the many additional resources located in the Support section of this website. Of particular interest is the DSF2 Information Document.