What a link is worthAbout
About mxverify
mxverify is a free backlink value checker: it puts a dollar value on one new followed link from any website — its BV score — shows how links placed on the site behaved when bklink audited them, and names the shared servers whose sites show one owner.
What mxverify does
Backlink value checker
Enter a website on the backlink value checker and it works out, in a few seconds, what one new followed link from it is worth to rankings. The BV score comes from the site's strength — half its authority rating, half its organic traffic — and the kind of link you can actually get there, from an editorial citation (A) to a network link (D). Relevance to the site the link points to moves the figure between half and one and a quarter times.
A report for every site
Every site checked or audited gets a report at its own address: the BV score and what moves it, how the site links out, its traffic, the links other sites make to it, its tech stack, its domain record and who shares its server. A "Where each figure comes from" section names the source and date of each figure, and a limitations section says what the report cannot show.
Audited link records
bklink, the backlink audit tool, fetches every link its users placed and records whether it stayed followed, was switched to nofollow, was removed or went dead. mxverify publishes that record for each publication — 4,447 links audited on 3,001 publications so far — and, on the audits page, what those links did in aggregate.
Shared servers and networks
Shared servers list the publications that resolve to one address. Sharing a server does not make sites one operator; footprints do — shared private nameservers, registrations inside one 90-day window, one registrar, one site theme, identical audited purchases — and a server is called a network only when at least two agree and one of them is nameservers, registration dates or theme.
Top lists and site hubs
Top lists set audited publications side by side by how their links behaved. Hubs group every site with a report by one fact — its link level, its BV band, its category, the software it runs on, its ad load, the decade it was registered — from the publications directory.
What makes mxverify different
A value in dollars, not an authority score
Authority scores rate a site; the BV score prices the link you can get on it. That is why a very large site can be worth little: the link anyone can get on google.com is a listing, not an editorial citation, so its BV score is $183, although an editorial link there would be worth up to $1,829.
Link types from audits of real placements
Where bklink has audited links on a site, the kind of link behind its value is read from those audits, not assumed. The audit record is the placements bklink's users chose to audit — a sample, not a census — so each report says how many links it rests on, and one with too few says so rather than stating rates.
The method is published
Every factor, level and rule of BV 2.9 is on the methodology page. bklink.uk uses the same model to value every link in its audits and keeps each earlier version on its own methodology page.
Every figure names its source and date
Third-party figures are labelled as estimates, with the month they describe; figures from mxverify's own reading say how large the sample was; a zero that only means "no data" is never shown as a measurement.
Independent
mxverify sells no links. No site pays to be listed, valued or left out, and nothing on it is supplied by the sites themselves. Who ran an audit, and whose site a link points to, is never published.
What people use mxverify for
Negotiating sponsored content costs
Set a publication's asking price beside what a level B link — a guest, sponsored or placed article — from it is worth to rankings. A price many times the BV score is paying for more than the link's ranking benefit. Using a report to judge a placement.
Identifying and avoiding PBNs
Check prospective sites against their server. A server is called a link network only when its sites show footprints of one owner — shared private nameservers, registrations inside one 90-day window, one registrar, one theme — and a link from a network site is valued at level D, the lowest. Shared servers and networks.
Prioritising digital PR targets
Check each target domain, or set two side by side, and spend outreach on the sites where a level A link — an editorial citation — is worth the most. Each report shows what an editorial link would be worth beside the link most buyers get. Compare two sites.
Auditing vendor reliability
Before buying from a publication, read its audit record: whether links placed on it stayed followed, were switched to nofollow, were removed or went dead after the placement. Top lists rank audited publications by how their links behaved. Top lists.
Reporting SEO ROI in dollars
bklink audits value every placed link with the same BV model, so the links a campaign gained can be reported to a client or a stakeholder as a total ranking benefit in dollars, not an authority score. Methodology.
Building a placement shortlist
Start from the directory instead of a vendor's list: hubs group every site with a report by category, site type (publishers, directory submission sites, press release sites), link level, value band, software and registration decade. Browse the publications directory.
Vetting a site before a placement
One report shows a site's traffic estimate and where it comes from, how heavy its ad load is, when its domain was registered, how it links out and who shares its server — the checks a link buyer would otherwise run across several tools. Backlink value checker.
Showing a publication's value
Publishers can show their BV score on their own site with the BV badge, so a buyer sees an independent value rather than a self-reported metric. How mxverify works.
The team behind mxverify
Palash Bagchi, maintainer
Palash Bagchi maintains mxverify: founder of bklink and of Immortal Reality PA LLC, leading product for the company's AI infrastructure work alongside bklink. On X and LinkedIn.
How mxverify started
mxverify.uk went live on 20 September 2026 as bklink's crawl hub: public pages listing links whose indexing had been requested, so search engines could find them. On 25 September 2026 it became a backlink value checker, pricing a link from any website with the model bklink uses in its audits. It now also publishes the audit record, the shared-server networks and a report for every site checked.
The company
mxverify is published by bklink and operated by Immortal Reality PA LLC, based in Pittsburgh, Pennsylvania.
How mxverify works
- Checking a site: type a domain; the check reads the site, prices a link from it and opens its report in a few seconds. Free, up to 30 checks an hour.
- What you get: the site's report, a side-by-side comparison with any other site, and the BV badge a site can place on its own pages.
- How fresh: each report dates its figures. A site's record is read again at most every 30 days, its authority rating every day and the links to it monthly; audited links change as bklink re-checks them.
- Corrections: email support@bklink.uk. You reach the maintainer directly, and we aim to reply within two business days.
Key facts
- Name
- mxverify, published by bklink (operated by Immortal Reality PA LLC)
- Type
- Free backlink value checker and publication directory
- Launched
- 20 September 2026; the backlink value checker on 25 September 2026
- Maintainer
- Palash Bagchi
- Headquarters
- Pittsburgh, Pennsylvania, United States
- Website
- https://mxverify.uk
- Price
- Free: no account, no subscription
- Model
- BV 2.9, the model bklink.uk uses to value every link it audits
- Audit record
- 4,447 links audited on 3,001 publications, as of 5 November 2026
- Shared servers listed
- 21
- Sources
- bklink audits; mxverify's own reading; Ahrefs Domain Rating (sets Site Strength, not shown); third-party traffic estimates; a third-party backlink index; domain registries (RDAP); Chrome UX Report; Wikidata; the Internet Archive; Common Crawl
- Contact
- support@bklink.uk
- Social
- X (@PalashBagchi11) · LinkedIn (Palash Bagchi)
Frequently asked questions
What is mxverify?
mxverify is a free backlink value checker. Enter any website and it says what one new followed link from it is worth to rankings, in dollars — its BV score — with how links placed on it behaved when bklink audited them, and whether it shares a server with sites that show one owner.
What can I use mxverify for?
Negotiating sponsored content costs; Identifying and avoiding PBNs; Prioritising digital PR targets; Auditing vendor reliability; Reporting SEO ROI in dollars; Building a placement shortlist; Vetting a site before a placement; Showing a publication's value. Each is described, with the page that does it, under "What people use mxverify for" on this page.
Is the BV score a price?
No. It is the ranking benefit of one new followed link, worked out by a published model. It is not what a publisher charges or what anyone will pay: a price list says what a link costs, the BV score what it is worth.
How is the BV score different from Domain Rating?
Domain Rating, Ahrefs' score, rates a site's link authority from 0 to 100. The BV score prices one link from the site in dollars: it combines the site's strength — half its authority rating, half its organic traffic — with the kind of link you can get there, from an editorial citation (A) to a network link (D). mxverify's reports do not display Domain Rating.
Is mxverify free?
Yes. There is no account and no subscription. A visitor can check up to 30 sites an hour, which keeps the checker free for everyone.
Where do the figures come from?
Each report names the source and date of every figure in its "Where each figure comes from" section: bklink's audits, mxverify's own reading of the site, Ahrefs' Domain Rating (used, not shown), third-party traffic estimates, a third-party backlink index, the domain registry, the Chrome UX Report, Wikidata, the Internet Archive and Common Crawl.
Can a site pay to be listed, valued higher or left out?
No. mxverify sells no links and takes no payment from the sites it covers, and nothing on it is supplied by the sites themselves.
How do bklink's audits feed the value?
Where bklink has audited links on a site, the kind of link behind its value is read from those audits: whether each link stayed followed, was switched to nofollow, was removed or went dead. Elsewhere it is read from mxverify's own reading of up to ten of the site's articles. Who ran an audit, and whose site a link points to, is never published.
How do I report a mistake?
Email support@bklink.uk. Any report can be checked again from its own page, and an error we confirm is corrected on the report. You reach the maintainer directly, and we aim to reply within two business days.