A USD-paying SE Ranking customer contracts with SER Acquisition Inc., a Delaware entity governed by California law, yet the product itself runs on Google LLC, AWS EMEA, and Hetzner infrastructure with no US region named anywhere, and its only US-specific credential is an annual self-assessed Data Privacy Framework filing rather than a third-party audit. Ahrefs also names no US region, hosting on AWS with a subprocessor in the US and Singapore, and its own SOC 2 is still only planned rather than issued. Scope compared, criterion by criterion. Checked 7 September 2026.





A USD-paying SE Ranking customer signs with SER Acquisition Inc., described as the “US Branch,” incorporated in Delaware and governed by California law. The hosting behind that contract, kept as a separate matter entirely, runs through Google LLC, AWS EMEA, and Hetzner — and none of the three is named as running in a US region.
No SOC 2, ISO 27001, FedRAMP, StateRAMP, or HIPAA business associate agreement appears anywhere on SE Ranking’s published pages. The one US-specific credential it does claim is an annual self-assessment of Data Privacy Framework compliance — a filing SE Ranking completes about itself, not an audit a third party has signed off on.
Ahrefs states it places data in the United States, without naming a specific region, hosted on AWS. Its own list of subprocessors names both the United States and Singapore, and its SOC 2 certification is, by its own account, still only planned. FedRAMP, StateRAMP, GovCloud, and a HIPAA business associate agreement are all absent from the four pages tested.
SE Ranking’s Terms shift all US sales tax onto the customer without ever stating who carries nexus responsibility; its FAQ mentions only VAT, never the words “sales tax,” “state,” or “W-9.” No state list and no per-jurisdiction calculation appears anywhere, not even on the pricing page itself. Ahrefs, by contrast, does add sales tax on top of its listed price, in a state list naming Texas, New York, and Washington DC, though the rest of that list was too illegible to count.
SE Ranking’s Core plan, at a hundred twenty-nine dollars a month or a hundred three dollars and twenty cents billed annually, and its Growth plan, at two hundred seventy-nine dollars a month or two hundred twenty-three dollars and twenty cents annually, both run through Stripe with the year paid upfront. Only Enterprise involves a sales conversation at all; below it, bank transfer or direct debit exists by country and currency, but invoice, net-30, ACH, and a W-9 are absent from the pages published. Ahrefs opens non-card billing only at Enterprise too, one thousand four hundred ninety-nine dollars a month on an annual commitment, with invoice or wire depending on which of its own pages you read.
SE Ranking’s entry tier costs a hundred three dollars and twenty cents a month billed annually: ten projects, one seat, two thousand daily keywords, and only six months of historical data. Ahrefs’ Starter tier costs twenty-nine dollars a month for two hundred credits and two hundred fifty rows per report — a far lower number, though neither entry price answers the residency or credential questions raised above.
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