applied
Etsy, Mercado Libre and Rakuten: IP expectations for new sellers
Three marketplaces where network consistency matters in different ways. What to check before you register.
Articles
Practical notes on IPs and store safety
Only what we have verified ourselves: how to tell a real residential IP from a datacenter, how platforms treat hosting ranges, and a checklist to run before opening a store.
applied
The order of fixes: IP, device, payment, phone — what to change first
When something is off, changing everything at once destroys the evidence. This is the order that keeps the diagnosis intact.
technical
What a platform sees when you log in through a VPN
A VPN hides your city, not your category. Here is what the platform can infer from a VPN exit versus a residential line.
applied
Browser profile isolation for multiple stores: what actually leaks
One profile per store is the usual advice. Here is what leaks between profiles even when you follow it.
applied
Residential proxy pricing in 2026: what is fair and what is hidden
Per-GB, per-IP, per-port — the pricing models are not comparable. Here is how to convert them into a cost per usable address.
applied
How an IP gets burned, and whether it can recover
Flagging is rarely permanent. What actually changes an address reputation, how long it takes, and when replacing it is the only option.
applied
How to read a pool report (and what to send to a supplier)
Our report page is meant to be forwarded. Here is what each number means and which parts actually settle an argument.
applied
Timezone and language mismatches: the cheapest signal platforms can read
Before any fingerprinting, a platform can compare your IP timezone with your browser timezone and language. Here is how to align them.
applied
DNS leaks: what they reveal, how to test, and why a VPN alone is not enough
A VPN can hide your IP while your DNS queries still go to a local resolver. Here is what that reveals and how to check it.
applied
What actually triggers an account review (a catalogue, not a theory)
Reviews are usually caused by a small cluster of inconsistencies. Here is the catalogue sellers report most often, ordered by how much you can control.
applied
Static vs rotating proxy pools: which one your store actually needs
Rotation is a feature for scraping and a bug for store accounts. A short decision guide with the trade-offs.
applied
Residential vs mobile proxies: the trade-off nobody explains honestly
Mobile proxies cost more and rotate more. Here is when they help a store — and when they are just an expensive version of the same risk.
applied
Seven warm-up mistakes that quietly burn a new account
Most warm-up failures are not dramatic — they are small inconsistencies repeated for a week. Here are the seven we see most.
applied
Temu, eBay and Walmart: what they check before a new seller is approved
A practical comparison of what each marketplace looks at, and which parts an IP check can cover.
applied
Can two stores share one IP? What actually gets linked
The IP is one of several linking signals — and usually not the strongest. Here is what links accounts and what does not.
applied
Your IP got flagged: what to do (and what not to do) in the first 48 hours
Panic changes make it worse. A short, ordered checklist for handling a flagged IP or an account review.
applied
Eight questions to ask before buying a residential proxy pool
Most “residential” pools are resold hosting ranges. These eight questions — and a 20-address test — separate the two.
applied
Choosing the IP for a new Shopee store
Shopee checks local phone, payment country and network together. Here is how to line them up before you register.
technical
The free data feeds behind a serious IP check (and how to combine them)
Cloud provider ranges, Spamhaus DROP, PeeringDB and the Tor exit list: what each one gives you, where it fails, and how to combine them without buying a commercial database.
technical
TCP fingerprinting and port scans: what they can and cannot tell you about a proxy
TCP/IP stack fingerprints, open proxy ports and their limits — and why an HTTP-side check cannot replace them.
technical
Building a batch verification client against the IPASK API
A practical walkthrough: authentication, batching, concurrency, retries and quota accounting with real code.
technical
How GeoIP databases actually work (and why city-level is fuzzy)
Where geolocation data comes from, what accuracy_radius really means, why free and commercial databases disagree, and how often they update.
technical
IPv6 attribution: /64s, temporary addresses and why the answer is fuzzier
IPv6 changes what "an IP" means: users control most of the address, clients rotate it, and a /64 is a single household. Here is what that does to attribution.
technical
Inside the verdict engine: rules, confidence and what we deliberately do not do
A technical walkthrough of how an IP becomes a verdict: which signals are used, how confidence is assigned, and the limits we accept.
technical
How the Tor exit list is published — and how to match it correctly
The list is public and updated constantly. Here is where it comes from, how often it changes, and the mistakes to avoid when matching.
technical
Anycast and CDN exits: why some IPs look like they are everywhere
One IP, many locations. How anycast works, what it does to geolocation, and why a CDN edge is a poor identity for a store.
technical
RDAP in practice: querying prefix registration without a WHOIS client
RDAP is the structured replacement for WHOIS. Here is how to query prefix ownership and which fields actually help an IP check.
technical
Reverse DNS (PTR) patterns: what they reveal and what they do not
PTR records are set by the network owner. Here is how to read them, the patterns that suggest a home line, and the cases where they lie.
technical
Reading BGP AS paths to understand where an IP really comes from
AS numbers, AS paths and upstreams — how to read routing data with public tools, and why the announcing ASN decides the verdict.
platforms
TikTok Shop: why your IP region and your shop region must agree
Region mismatches are one of the most common reasons a TikTok Shop gets limited. Here is how to check alignment before you apply.
platforms
The IP checklist for a new Amazon seller account
What to verify before you register a new Amazon seller account, and which mismatches trigger the first review.
method
The 7 / 14 / 30-day warm-up timeline (and what actually changes)
Warm-up is not a ritual — it is the period in which platforms accumulate evidence about one account. Here is what to do in each window.
proxy
Dual-ISP addresses: what they are and why "双ISP" claims need checking
Dual-ISP is about routing and peering, not household quality. Here is what the term means and how to tell a real dual-ISP block from a marketing line.
basics
What "native IP" really means — and the three myths sellers repeat
Native IP is not a synonym for residential. Here is what the term actually describes, how to verify it with public data, and which claims are marketing.
checklist
Before you open a new store: a 10-minute IP checklist
A short, repeatable checklist for vetting the IPs you are about to attach to a new store — before the first login, not after the first ban.
method
Why we show confidence instead of a single risk score
A 72/100 score hides the reasoning. Confidence plus evidence lets you disagree with us — and check the data yourself.
proxy
Five signs your "residential" proxy is actually a datacenter
Sellers repackage hosting IPs as residential every day. These five checks catch most of them before they cost you a store.
basics
What a residential IP actually means (and what sellers get wrong)
Residential IP is not "an IP that passes a platform check". It is an address block allocated to a consumer ISP. Here is how to tell the difference.