1. Inventory: finding every listing that already exists
Before you can fix anything, you have to see it. The core citation ecosystem is not 500 mystery directories — it is roughly 80 sources that matter, organized in tiers. Tier one is the platforms that feed Google directly or dominate specific verticals: Apple Maps, Bing Places, Yelp, Foursquare, Yellow Pages, Facebook Places. Tier two is the data aggregators that syndicate to hundreds of downstream directories with a single record: Data Axle (formerly Infogroup), Neustar Localeze, Foursquare (as an aggregator), TomTom, and HERE. Tier three is the industry verticals — Healthgrades and ZocDoc for medical, Cars.com and DealerRater for auto, Avvo for legal, TripAdvisor for hospitality — where being listed matters enormously in one industry and not at all in another. The reason most brands have 6 to 12 wrong citations is that the tier-two aggregators quietly populate the tier-three directories without anyone's involvement. A wrong phone number entered into Data Axle in 2019 by a previous vendor is still syndicating to the long tail of directories today. Discovering these takes a real crawl, not a lookup. SeoNexus's scan reads each source directly, matches against your source-of-truth NAP with fuzzy logic (so 'St' vs 'Street' doesn't trigger a false positive), and returns the actual inventory. That is table stakes for citation management, and it is a table stake most competitors skip in favor of showing you a pretty score.