- Verify consumers’ contact details even when a telephone number is unavailable by adding ex-directory flags
- Part of the BT OSIS subscriber database, the file contains details of over 12.5 million ex-directory listings
- Provides up to three per cent extra usable telephone numbers by adding Directory enQuiry by Request (DQR) records
Over half of the 24 million plus UK consumer telephone numbers are ex-directory.
The release of the XD file in May 2002 provided a number of benefits, not least the ability to verify existing contact details. Although an XD number cannot be provided, a flag confirms that the name and address details on the customer file correspond with the BT data, in turn suggesting an existing telephone number may be usable.
Verification of contact details reduces spend on outbound campaigns and the XD flag also suggests which customers may be less responsive to telesales than other contact channels. Furthermore, XD processing can improve match rates by up to three per cent, adding numbers for Directory enQuiry by Request (DQR) records, which are not available in printed directories.
Optional Extra Dataset
Extra Numbers
Add telephone numbers to your database or validate those already held on file by screening records
against the Extra Numbers service.
Compiled by an independent aggregator from over 150 transactional data sources, the Extra Numbers
file contains 6 million UK consumer telephone numbers, over 3.5 million of which are not available on
OSIS. The file is refreshed quarterly and all telephone numbers provided are for consumers who have
chosen not to opt-out of third party marketing.
Screening against the Extra Numbers file will add more telephone numbers to your calling list,
increasing the number of contact opportunities and the potential to achieve campaign objectives.
