A merchant that refuses your card while the balance is full usually never asked about the balance. It read the leading digits of the card number, applied its own rules to what those digits said, and stopped there. Those digits are the BIN — the first six digits of a card number, and the first eight on ranges issued under the newer card-numbering scheme. They identify the range the card was issued in, and any merchant can read them before a single request leaves its server.
That is the whole reason a card with money on it can be declined at one shop and work at the next one a minute later. The two shops are not disagreeing about your money. They are disagreeing about your BIN.
An online payment has two stages, and both end in the word “declined”
The first stage happens entirely at the merchant and its payment gateway. The card number is entered, the leading digits are looked up in a database of issued ranges, and the merchant’s rules run against what comes back. No authorisation request has been sent to anyone at this point, and no money has been reserved anywhere. If a rule says no, the checkout reports a declined card, and the card issuer never learns that a payment was attempted.
The second stage is authorisation. The request travels to Visa or Mastercard, the network routes it to the issuer, and the issuer answers with the money in mind: is the amount there, is it inside the limit, is the card live.
A refusal at the first stage cannot be fixed by a larger balance, because no balance was ever consulted. This is the mechanic behind the complaint “but I have money on the card”, and it is why topping up again changes nothing at a merchant that has already made up its mind.
What the merchant sees before authorisation
| Property read from the BIN | What it says on a Blomo card |
|---|---|
| Payment network | Visa or Mastercard — the Blomo range contains both |
| Issuing country | One of six: Netherlands, Spain, Poland, United Kingdom, Indonesia, Estonia |
| Card type | Debit, prepaid or credit — the field most merchant filters actually read |
| Issuing bank | Sometimes. Blomo cards are issued under licence by a partner bank |
Blomo publishes the first two of these as plain product facts: the range is six cards, on Visa and Mastercard, issued in the Netherlands, Spain, Poland, the United Kingdom, Indonesia and Estonia, in EUR, PLN, GBP and IDR. The card-by-card table lives on the fees page.
What Blomo does not publish is the BIN of each product. If you want to know what a lookup says about your card, you have to look at your own card number.
Three merchant rules that catch a card with money on it
The merchant wants a credit card specifically
Businesses that take a deposit rather than a payment — hotel check-in desks, car hire counters, some equipment rentals — want something they can charge later for damage or an overrun. A credit line can promise that; a card funded from a balance cannot. Blomo says the same thing on its own pages: some merchants decline prepaid and virtual cards as a matter of policy, hotel deposits and car hire desks being the usual examples, and this applies to virtual cards from any issuer (where the cards work).
The merchant blocks prepaid ranges
A service that hands something over before the first successful charge — a free trial, a shipped good, an ad account with credit — carries the loss when the charge later fails. Blocking whole prepaid ranges is a blunt way to reduce that, and it is applied to the BIN, not to you. This filter is the one that most often produces the pattern “it worked for a year and then stopped”: the merchant changed its rule, not your card.
The merchant filters by issuing country
Licensing terms, tax registration and regional catalogues all make merchants care where a card was issued. The issuing country in a BIN is the country of the issuing bank — it is not a statement about you. Blomo runs no residency check for a virtual card, so the country in your card’s BIN and the country you live in are independent facts. That helps at checkouts which only care about the card, and hurts at checkouts that expect the card’s country and the billing address you type to agree.
Separately, and before any of this: Blomo does not serve the United States, Russia, Ukraine, North Korea, countries in Africa or sanctioned jurisdictions. Those are excluded before a card exists, not at the till.
What Blomo can and cannot tell you in advance
Blomo cannot promise that a particular shop or service will accept a particular card, and does not answer for what a merchant decides from the BIN. The rule lives inside the merchant’s system, is not published anywhere, and changes without notice. There is exactly one reliable way to find out whether a service takes your card: try it, with a small amount.
What Blomo does state about its own range is that the products do not sit on equally strong BINs. The higher the entry threshold, the stronger the BIN behind the product, and the less often it is refused (virtual cards, where the cards work). The thresholds run from 100 USDT on the Estonia card to 1,000 USDT on the Netherlands card, and the refusal order runs the same way round: the Netherlands card is refused least often in this range, the Estonia card most often. That is Blomo describing which ranges its issuing partner puts behind each product and what it sees across them — a statement about its own supply, which is why Blomo can make it. What Blomo does not state is the size of the gap, and nor should anyone else: the order is the claim, not a percentage.
The reason underneath is the one worth understanding, because it outlasts any single checkout. A stronger BIN is less likely to change — the range behind the Netherlands card is less likely to be moved or reissued than the range behind the Poland card. A BIN does not change quietly: when it changes, your card number changes with it, and everything stored against the old number stops working at once. Subscriptions go first, because a merchant stores a card by number and charges it on a schedule — the next renewal simply fails, with the retry and cancellation behaviour that follows (subscriptions on a prepaid card). Being refused less often is the half of a strong BIN you notice at the till; a number that is still the same number in a year is the half you notice only when it is gone.
So if the merchants you actually use keep refusing before authorisation, a bigger balance on the same card is not the lever — the balance was never consulted. A product with a higher threshold is, and a small test payment is still the only way to confirm it at the merchants you care about.
One thing that does work in your favour at a checkout that asks for it: Blomo cards support 3-D Secure, and the confirmation code appears in the Blomo app rather than arriving by SMS. That matters for a card with no phone number attached to it — there is no text message to miss and nothing to lose in roaming.
Where to find your own BIN
Your BIN is not a secret, and you already have it. It is the leading digits of the card number shown in the Blomo app: the first six, or the first eight on a newer range. Unlike the rest of the number, those digits describe the issuing range rather than your card, which is why merchants are allowed to read them before anything is authorised.
Public BIN lookup sites will tell you what they think those digits mean. They are third-party databases: Blomo neither maintains them nor vouches for what they report, and stale entries are ordinary. Treat a lookup as a hint about how a merchant might classify the card, not as a fact about the card.
Working out which kind of decline you got
| What you observe | What it points to |
|---|---|
| Instant refusal at one merchant, any amount, no money moves | A rule at the merchant, decided from the BIN |
| The same card pays normally at other merchants | The card is fine; the rule belongs to that merchant |
| A small amount goes through and a larger one does not | Balance, fee headroom, or a spending limit |
| It worked for months and then stopped, with nothing changed on your side | The merchant changed its rule |
| Refused specifically at a hotel desk or car hire counter | The published prepaid-and-virtual policy of that kind of business |
Then, in order:
- Check the amount against the balance, including the fee. The transaction fee is 0.5% on the Netherlands card, 1% on Spain, Poland, Indonesia and Estonia, and 1.5% on the United Kingdom card (fees). A payment in any currency other than the card’s own is recalculated at the Visa or Mastercard rate of that moment, with no Blomo markup, so the amount taken off the balance is not exactly the price on the label.
- Pay something small somewhere else. A card that pays elsewhere is a working card, and that single test separates “my card is broken” from “this merchant refuses this range”.
- If it is a BIN rule, stop retrying. Repeating a payment that was refused before authorisation produces the same answer every time. The options are a product with a higher entry threshold, or, for the deposit desks that refuse virtual cards outright, a physical card — which is the one Blomo product that requires an identity check.
- Write to support with the merchant name and the time. Support will tell you what is visible from Blomo’s side, and will say plainly when nothing is: a payment refused before authorisation leaves nothing to look at.
Questions people actually ask
What is a BIN?
A BIN is the first six digits of a payment card number, or the first eight on ranges issued under the newer numbering scheme. It identifies the range the card was issued in, and from it a merchant can read the payment network, the issuing country, the card type and often the issuing bank.
Why was my card declined when I have money on it?
Most likely because the merchant decided from the BIN, before any authorisation request was sent. A refusal at that stage never reaches the card issuer, so no amount of balance changes the outcome.
Which BIN do Blomo cards use?
Blomo does not publish the BIN of each product. It does publish that the range is Visa and Mastercard, issued in the Netherlands, Spain, Poland, the United Kingdom, Indonesia and Estonia. You can read the leading digits of your own card number in the app.
Can Blomo tell me in advance whether a shop will accept the card?
No. The rule belongs to the merchant, is not published, and can change without notice. The only reliable check is an attempt with a small amount.
Does a higher entry threshold really mean fewer refusals?
Yes, and that is Blomo’s statement about its own range: the higher the entry threshold, the stronger the BIN behind the product, and the less often it is refused — the Netherlands card at a 1,000 USDT threshold least often in this range, the Estonia card at 100 USDT most often. Blomo states the order and not a size, so do not expect a percentage from anyone. The reason underneath is stability: a stronger BIN is less likely to change, and a BIN change changes your card number, which breaks every subscription stored against the old one.
Do Blomo cards support 3-D Secure?
Yes. The confirmation code appears in the Blomo app rather than by SMS, so a checkout that demands a 3-D Secure step can be completed without a phone number on file. What Blomo does not publish is the per-product detail of how each issuer implements it, and a merchant can still refuse a card for reasons that have nothing to do with 3-D Secure.
Read on
- Where a Blomo card works — Which cards tap in shops, which give cash, and what each payment costs.
- Virtual cards — The six products, their thresholds and what a higher threshold buys.
- Fees, in full — Transaction, ATM and top-up rates, card by card.
- Can a subscription run on a Blomo prepaid card? — What a recurring charge does differently, and the one Blomo action that stops it.