1. Twilio.com
2. Textnow.com
3. Countrycode.org
4. Wp.pinger.com
5. Textmagic.com
6. Esendex.co.uk - easy to get a trial period for using a virtual number by quick registration, package includes 25 free messages, limited to 7 days. No credit card required. Can be considered a personal number.
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