The name registered with the carrier for this number. Typically blank for personal mobile numbers. More commonly populated for business landlines. When present, confirms the name the carrier has on file — useful for verifying a contact who provided a name via OTTO.

CONSUMER, BUSINESS, or UNDETERMINED. Consumer = personal mobile line (typical for most opt-ins). Business = a number registered as a business line. Useful for B2B lists where you want to distinguish personal vs business contacts.

Mobile, Landline, or VoIP. This is the most important Standard Caller ID field. Landlines and VoIP numbers cannot receive SMS — a contact who opted in with a landline number will never receive your messages. These should be filtered out before any outbound campaign send.

The wireless carrier (Verizon Wireless, T-Mobile, AT&T, US Cellular, etc.). Useful for troubleshooting deliverability issues — if a specific campaign shows high delivery failure, filtering by carrier can reveal whether a specific carrier is causing the problem.

The geographic registration of the number at the carrier level. Note: this reflects where the number was registered — not necessarily where the contact is physically located. A contact with a Baltimore number who moved to Phoenix still shows Baltimore. Use geo scan data for physical location; use this for number registration geography.

The timezone associated with the number’s registered location. Use this for scheduling 1-to-1 follow-up calls and outbound campaigns — a contact in America/Los_Angeles should not receive a callback at 8am Eastern time. Schedule callbacks during business hours in their timezone.

Yes/No flag indicating whether the number is a prepaid phone. Prepaid numbers have higher churn rates and may indicate lower-intent or transient contacts in some verticals. Not disqualifying on its own — but relevant context for lead scoring, especially in B2C lead gen where prepaid prevalence varies by market.

A carrier-aggregated signal of the number’s fraud risk. Score of 0 = no detected fraud signals. Higher scores indicate patterns associated with fraudulent activity — SIM swapping, number spoofing, or other fraud indicators from carrier data. Filter contacts with elevated fraud scores before investing rep time in follow-up.

Yes/No flag indicating whether this number has been identified as a source of spam by carrier-level data. A Spammer = Yes contact opted into your list — but their outbound messages from this number may be flagged by carriers. Useful for filtering before re-engagement sends.

Yes/No flag indicating whether the number has been associated with recent abuse activity in carrier data. Similar to Spammer but specifically flagged for recent activity — a more current signal. Contacts with Recent Abuse = Yes should be reviewed before outbound contact.