Low Severity

Spam: Suspicious toll-free phone number

Labels

Spam
Social engineering
Content analysis

Description

Detects messages containing phone numbers 1 800-555-0199 or 1 800-555-0299 in the subject or body, which is reserved for use by the entertainment industry. Commonly used as a placeholder phone number in LLM-generated campaigns.

References

No references.

Sublime Security
Created Jul 27th, 2026 • Last updated Jul 27th, 2026
Feed Source
Sublime Core Feed
Source
GitHub
type.inbound
and any([body.current_thread.text, subject.subject],
        regex.icontains(., '\b\+?(\d{1}.)?\(?8\d{2}?\)?.555.?0[12]99\b')
)
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