Series

Backlink Intelligence & Infrastructure

Treating a backlink profile as evidence to investigate, not a score to read off a dashboard -- shared infrastructure, ASN resolution, PBN footprints, and what actually holds up in an authority report.

link-infrastructure

Backlink Intelligence Software: Category Explained

Backlink intelligence software gets used as a marketing label more often than a defined category, but three capabilities actually set it apart from Ahrefs, Semrush, or Moz: infrastructure and footprint detection built into the product, workflows that verify a link is live right now rather than just once-indexed, and evidence-first reporting that shows the signal behind a score. This piece compares the category directly against mainstream backlink checkers and covers who genuinely needs dedicated intelligence tooling versus who is already well served by a standard audit tool.

Palash Bagchi · September 15, 2026 · 14 min read

link-infrastructure

Backlink Footprint Audit: Finding Shared Infrastructure Across Sites

Shared hosting alone rarely proves a backlink network is fake, since plenty of legitimate small sites share the same budget host. This guide walks through the four infrastructure signals worth checking across a set of linking domains, and why real evidence only appears once several signals stack on the same cluster.

Palash Bagchi · September 15, 2026 · 15 min read

link-infrastructure

PBN Footprint Scanner: A Technical Investigation Playbook

Whether a cluster of linking domains is a private blog network is a cross-domain question, not a single-site one. This playbook works through the ordered technical checks - shared hosting and IP overlap, reused analytics IDs, WHOIS registration clustering, content patterns, and outbound link concentration - that build the evidentiary case step by step, with no single check treated as conclusive on its own.

Palash Bagchi · September 15, 2026 · 17 min read

link-infrastructure

IP and ASN Resolution for Backlink Investigations

Two backlink domains can use completely different IP addresses and still sit inside the same hosting company's network once those IPs are resolved back to an ASN. This piece covers what an ASN actually is, how IP-to-ASN resolution works in practice, and why a shared ASN means very different things depending on whether the host behind it serves millions of unrelated sites or a few thousand.

Palash Bagchi · September 15, 2026 · 17 min read

link-infrastructure

Backlink Intelligence Explained: From Link Lists to Evidence

A backlink checker hands you a list of URLs and a single authority score. Backlink intelligence is the layer of work that turns that list into evidence: who actually controls a linking site, whether it behaves like a real publication, and whether a claimed placement can be verified. This piece walks through the three signal types behind that evidence and a real, public case where a decades-old authority score failed to predict what scrutiny eventually found.

Palash Bagchi · September 15, 2026 · 14 min read

link-infrastructure

Link Authority Reporting: Which Authority Signals Survive Scrutiny?

A practical breakdown of which backlink authority claims hold up when a client or stakeholder pushes back, and which ones are vanity metrics in disguise. Covers portfolio averages that hide risk, unnamed vendor scores, correlation-as-causation claims, and what to report instead.

Palash Bagchi · September 15, 2026 · 13 min read