Grizzly SMS vs OnlineSIM
It is a trade-off. OnlineSIM has the higher Safety grade (6.1 against 5.5), while Grizzly SMS has the higher Privacy grade (5.8 against 2.9).
Grizzly SMS
Pay-per-code virtual numbers for SMS verification, topped up by card, e-wallet or crypto
Privacy
5.8/ 10
Fair
Safety
5.5/ 10
Fair
No ID mentioned KYC 1 Docs reviewed Full review →
OnlineSIM
Long-running SMS-receiving service with one-time and rented virtual numbers in 90+ countries
Privacy
2.9/ 10
Poor
Safety
6.1/ 10
Fair
ID on risk flag KYC 3 Docs reviewed Full review →
Side by side
| Grizzly SMS | OnlineSIM | |
|---|---|---|
| Category | Phone Numbers & SMS | Phone Numbers & SMS |
| KYC policy | No ID mentioned | ID on risk flag |
| Custody | N/A | N/A |
| Sign-up | Email required | Email required |
| Open source | No | No |
| Tor onion address | No | No |
| Pay with | Crypto, Card | Crypto, Bank transfer |
| Fees | Charged only for received codes; minimum deposit $3 | Not published |
| Founded | Not published | 2013 |
| Jurisdiction | United Kingdom | Singapore |
| Not available in | Legal page: access restricted for users located in the Russian Federation (from 28 July 2025) | Not published |
| Incidents on record | 0 | 0 |
| Published tests (180 days) | 0 | 0 |
Only Grizzly SMS
Requires email
Both
Legal entity disclosedRuns an affiliate programme
Only OnlineSIM
May request ID5+ years operating
Where they sit among phone numbers & sms
Questions
Is Grizzly SMS or OnlineSIM safer?
OnlineSIM has the higher Safety grade: Grizzly SMS 5.5, OnlineSIM 6.1, out of 10.
Does Grizzly SMS or OnlineSIM require KYC?
Grizzly SMS is KYC level 1 (no ID mentioned). OnlineSIM is KYC level 3 (ID on risk flag).
Which has more incidents on record?
Grizzly SMS has 0 and OnlineSIM has 0 documented incidents in the registry.