Backlink Checker: Referring Domains & Spam Score
Pricing
from $30.00 / 1,000 domain summaries
Backlink checker and backlinks API: full backlink lists, referring domains, domain rank, dofollow share and spam score for up to 1,000 domains or URLs per run. $0.03 per domain + $4 per 1,000 backlinks; failed lookups are free.
Row type
rowType
Required
summary = one per target; backlink / referring_domain = one per list row.
Target
target
Required
targetType
Optional
domain = whole domain incl. subdomains; url = one page.
input
Optional
The target as you entered it.
status
Optional
Summary rows: ok = backlinks found; no_backlinks = the index has none (charged: the lookup ran); error = failed or invalid (not charged); skipped = not checked because a spending, time or data-cost limit was reached (not charged).
rank
Optional
Target's domain rank, 0-1000 (DataForSEO's PageRank-style authority score).
backlinks
Optional
Live backlinks pointing to the target.
referringDomains
Optional
Linking domains (subdomains counted separately).
referringMainDomains
Optional
Linking root domains.
referringDomainsNofollow
Optional
Linking domains with at least one nofollow link.
dofollowReferringDomainsPct
Optional
Share of linking domains that give at least one dofollow link, %.
referringIps
Optional
Distinct IPs of linking domains (1-4 target runs; null in bulk runs).
referringSubnets
Optional
Distinct /24 subnets of linking domains (1-4 target runs).
referringPages
Optional
Linking pages (1-4 target runs).
spamScore
Optional
Summary rows: average spam score of the target's backlinks, 0-100. List rows: the backlink's / linking domain's spam score.
targetSpamScore
Optional
Spam score of the target itself, 0-100 (1-4 target runs).
brokenBacklinks
Optional
Backlinks pointing at pages that answer 4xx/5xx.
brokenPages
Optional
Target pages answering 4xx/5xx that have backlinks (1-4 target runs).
crawledPages
Optional
Pages of the target the crawler has seen (1-4 target runs).
firstSeen
Optional
When the index first saw the target / the link / the linking domain (UTC).
targetCountry
Optional
Server country of the target (1-4 target runs).
metricsSource
Optional
summary = per-target summary (1-4 targets, all fields); bulk = bulk metrics (5+ targets: rank, backlinks, referring domains, dofollow share, spam score).
message
Optional
mode
Optional
rowsReturned
Optional
List modes: rows saved for this target.
matchingRows
Optional
List modes: rows in the index that match your filters (you get up to Max rows per target).
rowsLimitedBy
Optional
Why fewer rows than matching: maxRowsPerTarget, SPENDING_LIMIT, RUN_TIME_LIMIT or VENDOR_CAP.
listError
Optional
List modes: the list lookup failed part-way (rows already saved were charged).
sourceUrl
Optional
Backlink rows: the linking page.
sourceDomain
Optional
Backlink rows: the linking domain.
sourceTitle
Optional
Backlink rows: title of the linking page.
targetUrl
Optional
Backlink rows: the page linked to.
anchor
Optional
Backlink rows: anchor text (null for image, redirect and canonical links).
altText
Optional
Backlink rows: image alt text, for image links.
linkType
Optional
Backlink rows: anchor, image, redirect, canonical, meta, alternate…
dofollow
Optional
Backlink rows: true unless the link is nofollow / ugc / sponsored.
rel
Optional
Backlink rows: rel attributes (nofollow, ugc, sponsored, noopener…).
domainRank
Optional
Rank of the linking domain, 0-1000.
pageRank
Optional
Backlink rows: rank of the linking page, 0-1000.
linkRank
Optional
Backlink rows: rank of the link itself, 0-1000.
lastSeen
Optional
Backlink rows: when the crawler last saw the link (UTC).
isNew
Optional
isLost
Optional
isBroken
Optional
Backlink rows: the linked page answers 4xx/5xx.
targetStatusCode
Optional
Backlink rows: HTTP status of the linked page.
sourceCountry
Optional
sourceLanguage
Optional
textBefore
Optional
Backlink rows: text just before the link.
textAfter
Optional
Backlink rows: text just after the link.
isIndirect
Optional
Backlink rows: the link reaches the target via a redirect or canonical.
referringDomain
Optional
Referring-domain rows: the linking domain.
linkingPages
Optional
Referring-domain rows: pages on that domain linking to the target.
dofollowLinkingPages
Optional
Referring-domain rows: of those, pages with a dofollow link.
lostDate
Optional
Referring-domain rows: when the domain's last link was lost, if it was (UTC).
error
Optional
charged
Optional
Summary rows: whether the domain-summary event was charged for this target.
checkedAt
Required
Data source
dataSource
Required
Where the data comes from. The same on every row.
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