These terms and conditions outline the rules and regulations for the use of this website.
Rinzler Labs (SC769904) is located at:
5 South Charlotte Street, EdinburghLast Update: 12th April 2026
The English version of this document is the sole authoritative version. Translations into other languages are provided for convenience only. In the event of any conflict or discrepancy between the English version and any translated version, the English version shall prevail.
These Terms constitute a legally binding agreement between you and Rinzler Labs. We want to emphasize that we will never willingly ask you to undergo any KYC (Know Your Customer) procedure. If you are using our services on behalf of an organization, you are agreeing to these Terms for that organization.
We reserve the right, at our discretion, to modify these Terms at any time. We will post the modified terms on this page and indicate the date of the latest revision. Your continued use of our services after any changes constitutes your acceptance of the revised Terms.
Our platform provides the following services:
You may use our services only as permitted by law, including applicable export and re-export control laws and regulations. We reserve the right to terminate or restrict your use if you violate these Terms or any applicable laws.
You will only use phone numbers for lawful purposes. You will not use any phone number to engage in harassment, bullying, scams, or any other abusive behaviour. If we receive reports of abusive use, we reserve the right to delete the phone number without notice and disable your account entirely. The following conditions apply to specific number types:
Our SMS Verification service provides temporary access to a phone number for the purpose of receiving a single SMS verification code. By using this service, you agree to the following:
Crypton Travel eSIM is provided through third-party partners. By purchasing Crypton Travel eSIM, you agree to the following:
This prepaid travel data service is marketed as Crypton Travel eSIM. In navigation, buttons, or other space-limited UI, it may appear in short form as Crypton Travel—the word “Travel” identifies the same product. Older wording such as “eSIM data plans” referred to this service before the current name; it describes the same offering.
Crypton Mobile is a connectivity service delivered via partners and mobile networks. By ordering or using Crypton Mobile, you agree to the following:
You agree to use our services only for purposes that are legal, proper, and in accordance with these Terms. You agree that when using our services, you will not:
The Crypton Partner Program allows approved users to provide phone numbers from their own SIM cards for use in our short-term rental and SMS verification services. Participation is subject to application approval and ongoing compliance with these Terms. The Partner Program may be enabled or disabled at our discretion at any time.
Partners connect their Android devices to our platform via the Crypton Companion App. By enrolling a device, you agree to the following:
Partners may add phone numbers from their enrolled devices for rental or SMS verification purposes. The following conditions apply:
Partners earn a share of revenue generated by their provided numbers. By participating, you agree to the following:
We may suspend or terminate your participation in the Partner Program at any time if:
Our services are provided under the general authorisation regime established by the Communications Act 2003. Under this framework, no individual licence is required to provide electronic communications services in the United Kingdom. We operate in compliance with Ofcom's General Conditions of Entitlement, which set the regulatory obligations for all communications providers.
UK telephone numbers used on our platform are provided in accordance with the Ofcom National Telephone Numbering Plan. Numbers are either allocated directly by Ofcom or sub-allocated through authorised communications providers. We comply with General Condition B1 (proper use of numbers) and all applicable numbering conditions.
In accordance with Ofcom's General Conditions and applicable UK law, we implement measures to prevent fraud, misuse, and abuse of our services. We reserve the right to suspend or terminate any number or account associated with fraudulent or illegal activity. We cooperate with law enforcement and Ofcom in investigating potential misuse of telecommunications services.
As a provider of electronic communications services, we are subject to Ofcom's regulatory oversight. Customers may raise complaints through our standard complaints process. If a complaint remains unresolved, customers may escalate matters to Ofcom (www.ofcom.org.uk) in accordance with the applicable dispute resolution procedures.
Our services and all content and materials included on or made available through our services, including but not limited to text, graphics, logos, images, and software, are the property of the Company or its licensors and are protected by copyright and trademark laws.
Our services are provided on an "as is" and "as available" basis. We make no representations or warranties of any kind, express or implied, as to the operation of our services. To the full extent permissible by applicable law, we disclaim all warranties.
These Terms shall be governed by and construed in accordance with the laws of Scotland and the United Kingdom. Any disputes arising from these Terms shall be subject to the exclusive jurisdiction of the Scottish courts. This service is operated by Rinzler Labs (SC769904), a company registered in Scotland.