zamp.com
Link authority for zamp.com (registrable domain: zamp.com) from the Common Crawl web graph: PageRank and harmonic centrality history since 2017, current scores, and the site's top backlink sources.
Web-graph authority (0-100)
Domain scores measure zamp.com as a whole: every subdomain's links rolled up into one node of Common Crawl's domain-level web graph. Host scores measure the exact hostname zamp.com. WWW scores cover the www variant of that hostname, which the graph tracks as its own entry since January 2026 (before that, www and bare host were merged). A big gap between domain and host usually means the domain's authority lives on other subdomains. PageRank is link-endorsement authority: how much weight the sites linking here carry themselves. Harmonic centrality measures reach: how close this site sits to the rest of the web when following links, which favors broadly connected sites over ones boosted by a few heavy linkers. All are normalized 0 to 100 within each crawl snapshot; a dash means that series does not exist for this site.
Homepage
What zamp.com presents on its own homepage: the page title, description, and the social share markup it publishes. Pulled from https://zamp.com.
| Title | Zamp | Sales Tax Compliance Software, Fully Managed |
|---|---|
| Description | Zamp is sales tax compliance software backed by real tax experts—registrations, calculations, filing, and remittance across the U.S. and Canada, done for you. |
| OG Title | Zamp | Sales Tax Compliance Software, Fully Managed |
| OG Description | Zamp is sales tax compliance software backed by real tax experts—registrations, calculations, filing, and remittance across the U.S. and Canada, done for you. |
| Twitter Title | Zamp | Sales Tax Compliance Software, Fully Managed |
| Twitter Card | summary_large_image |
Social accounts and contact points
Where this site maintains a presence and every reachable route its homepage exposes: social accounts, contact pages, addresses, and content feeds.
| Emails | support@zamp.com |
|---|---|
| Phones |
1-866-438-9267 18664389267 |
| Blog | https://zamp.com/blog |
Structured data (JSON-LD)
The schema.org markup this homepage publishes: the machine-readable identity search engines and AI systems read. Types found: Organization, WebSite, WebPage, SoftwareApplication.
JSON-LD block (5,616 bytes)
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "Organization",
"@id": "https://zamp.com/#organization",
"name": "Zamp",
"url": "https://zamp.com/",
"logo": {
"@type": "ImageObject",
"@id": "https://zamp.com/#logo",
"url": "https://cdn.prod.website-files.com/69f3731843be4ce24ae7dea2/69fa05516f03437e8e9e6511_Logo.svg",
"contentUrl": "https://cdn.prod.website-files.com/69f3731843be4ce24ae7dea2/69fa05516f03437e8e9e6511_Logo.svg",
"caption": "Zamp"
},
"image": { "@id": "https://zamp.com/#logo" },
"slogan": "Sales tax compliance software, fully managed.",
"description": "Zamp is sales tax compliance software paired with a dedicated team of sales tax experts — a fully managed (“done-for-you”) solution that handles the entire sales tax lifecycle end-to-end: nexus monitoring, registrations, rooftop-accurate calculations, filings, remittance, and notice management. Built for ecommerce, SaaS, and digital businesses selling across the U.S., Canada, and other major English-speaking markets, with flat, predictable pricing and no per-transaction fees.",
"knowsAbout": [
"Sales tax compliance software", "Sales tax compliance", "Sales tax automation",
"Sales tax nexus", "Economic nexus", "Sales tax registration",
"Sales tax filing and remittance", "Sales tax calculation", "SaaS taxability",
"Ecommerce sales tax", "U.S. sales tax", "Canada sales tax"
],
"areaServed": [
{ "@type": "Country", "name": "United States" },
{ "@type": "Country", "name": "Canada" },
{ "@type": "Country", "name": "United Kingdom" },
{ "@type": "Country", "name": "Australia" },
{ "@type": "Country", "name": "New Zealand" },
{ "@type": "Country", "name": "Ireland" }
],
"contactPoint": {
"@type": "ContactPoint",
"contactType": "sales",
"url": "https://zamp.com/book-call/",
"availableLanguage": "English"
},
"hasOfferCatalog": {
"@type": "OfferCatalog",
"name": "Zamp products",
"itemListElement": [
{ "@type": "Offer", "itemOffered": { "@type": "Service", "name": "U.S. Sales Tax", "url": "https://zamp.com/products/us-sales-tax", "description": "Fully managed U.S. sales tax — nexus tracking, registrations, rooftop-accurate calculations, filing, and remittance across all states." } },
{ "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Canada Sales Tax", "url": "https://zamp.com/products/canada-sales-tax", "description": "Fully managed Canadian sales tax — registration, calculation, filing, and remittance across federal and provincial sales taxes." } },
{ "@type": "Offer", "itemOffered": { "@type": "Service", "name": "Sales Tax API", "url": "https://zamp.com/integrations/api", "description": "Real-time, rooftop-accurate sales tax calculation API for custom and headless commerce." } }
]
},
"sameAs": [
"https://www.linkedin.com/company/zamptax",
"https://x.com/zamptax",
"https://www.facebook.com/zamptax"
]
},
{
"@type": "WebSite",
"@id": "https://zamp.com/#website",
"url": "https://zamp.com/",
"name": "Zamp",
"description": "Sales tax compliance software, fully managed.",
"publisher": { "@id": "https://zamp.com/#organization" },
"inLanguage": "en-US"
},
{
"@type": "WebPage",
"@id": "https://zamp.com/#webpage",
"url": "https://zamp.com/",
"name": "Sales Tax Compliance Software, Fully Managed | Zamp",
"isPartOf": { "@id": "https://zamp.com/#website" },
"about": { "@id": "https://zamp.com/#organization" },
"primaryImageOfPage": { "@id": "https://zamp.com/#logo" },
"description": "Zamp is sales tax compliance software backed by a dedicated team of sales tax experts, automating nexus tracking, registrations, calculations, filing, and remittance across the U.S. and Canada.",
"inLanguage": "en-US"
},
{
"@type": "SoftwareApplication",
"@id": "https://zamp.com/#software",
"name": "Zamp",
"applicationCategory": "BusinessApplication",
"applicationSubCategory": "Sales Tax Compliance Software",
"operatingSystem": "Web-based",
"url": "https://zamp.com/",
"description": "Zamp is sales tax compliance software paired with a dedicated team of sales tax experts. The platform automates the full compliance lifecycle — nexus monitoring, registrations, rooftop-accurate calculations, filing, remittance, and notice management — for ecommerce, SaaS, and digital businesses across the U.S. and Canada.",
"publisher": { "@id": "https://zamp.com/#organization" },
"aggregateRating": {
"@type": "AggregateRating",
"ratingValue": "4.9",
"reviewCount": "38",
"bestRating": "5",
"worstRating": "1"
},
"audience": {
"@type": "BusinessAudience",
"name": "Ecommerce, SaaS, and digital-services businesses with multi-state or cross-border sales tax obligations"
},
"featureList": [
"Nexus monitoring and alerts",
"Sales tax registrations",
"Rooftop-accurate sales tax calculation",
"Automated return filing",
"Tax remittance",
"Notice management",
"U.S. and Canada coverage",
"Integrations with Shopify, Stripe, NetSuite, and QuickBooks",
"Real-time sales tax calculation API"
]
}
]
}
Authority over time
Every Common Crawl web-graph release since 2017, roughly quarterly. The domain series goes back to 2017; Common Crawl only began publishing the host-level graph in 2020, so host lines start there. Click a legend entry to show or hide that line. Flat lines are normal for established sites; watch for sustained rises or drops, which track real gains or losses in who links here.
A note on www: through the end of 2025 the source web graph merged www and non-www hostnames into the bare name, so one host line covers both. Starting in January 2026 the graph splits them into separate entries, which is why www can carry its own scores going forward.
Backlink counts
Unique linking domains seen in Common Crawl's link graphs. This is a different dataset than the 0-100 authority scores above: these are raw counts, host-level for zamp.com and domain-level for zamp.com with all its subdomains combined. Common Crawl covers a large sample of the web, not all of it, so treat counts as comparable between sites rather than absolute totals.
Top backlinks in the domain graph
Common Crawl publishes two link graphs. The DOMAIN graph connects whole domains: every link from any page of one domain to any page of another. This table shows the highest-authority domains linking to zamp.com (including its subdomains), ranked by the linker's PageRank. The table shows the top 90; the download carries the full stored list (up to 10,000 linkers) as JSON. Click a linker for its own site profile.
Top backlinks in the host graph
The HOST graph connects exact hostnames, so subdomains count separately. This table shows the highest-authority hosts linking to zamp.com specifically, ranked by the linker's PageRank. The table shows the top 93; the download carries the full stored list (up to 10,000 linkers) as JSON. Click a linker for its own site profile.