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Site Information

cptc.edu

Link authority for cptc.edu (registrable domain: cptc.edu) from the Common Crawl web graph: PageRank and harmonic centrality history since 2017, current scores, and the site's top backlink sources.

21Domain PageRank
22Host Backlinks
410Domain Backlinks
Link authority data (PageRank, harmonic centrality) and backlinks come from the Common Crawl web graph.
cptc_edu.profile
Current Scores

Web-graph authority (0-100)

Domain scores measure cptc.edu 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 cptc.edu. 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.

21
Domain PageRank
12
Host PageRank
17
WWW PageRank
95
Domain Harmonic Centrality
95
Host Harmonic Centrality
95
WWW Harmonic Centrality
Site Intelligence

Homepage

What cptc.edu presents on its own homepage: the page title, description, and the social share markup it publishes. Pulled from https://cptc.edu.

TitleClover Park Technical College | Clover Park Technical College
DescriptionTechnical training from Clover Park Technical College prepares you for a rewarding career. Offering certificates and bachelor & associate degrees.
OG Site NameClover Park Technical College
Site Intelligence

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.

Facebook CloverParkTech
Instagram cloverparktech
Linkedin clover-park-technical-college (business)
Emails SM8227@bncollege.com
admissions@cptc.edu
Phones 253-589-5800
Site Intelligence

Structured data (JSON-LD)

The schema.org markup this homepage publishes: the machine-readable identity search engines and AI systems read. Types found: WebSite.

JSON-LD block (253 bytes)
{
    "@context": "https://schema.org",
    "@graph": [
        {
            "@type": "WebSite",
            "@id": "https://www.cptc.edu",
            "name": "Clover Park Technical College",
            "url": "https://www.cptc.edu"
        }
    ]
}
Web-Graph History

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 Data

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 cptc.edu and domain-level for cptc.edu 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.

22
Host Backlinks
410
Domain Backlinks
Backlink Data

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 cptc.edu (including its subdomains), ranked by the linker's PageRank. The table shows the top 410; the download carries the full stored list (up to 10,000 linkers) as JSON. Click a linker for its own site profile.

Download domain backlinks (.json)

Linking SiteLinker PageRankLinker Harmonic Centrality
amazonaws.com9049
blogspot.com8648
creativecommons.org8546
outlook.com8344
washington.edu7542
dol.gov7539
asu.edu7342
shrm.org7338
wa.gov7338
instructure.com7241
charitynavigator.org7138
uw.edu7137
wsu.edu7041
coda.io7038
edweek.org7037
collegeboard.org7036
bncollege.com6839
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seattle.gov6735
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china.org.cn6436
jcyl.es6335
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thehogring.com2021
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pure-processing.com2018
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Backlink Data

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 cptc.edu specifically, ranked by the linker's PageRank. The table shows the top 22; the download carries the full stored list (up to 10,000 linkers) as JSON. Click a linker for its own site profile.

Download host backlinks (.json)