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Site Information

charteroak.edu

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

19Domain PageRank
18Host Backlinks
339Domain Backlinks
Link authority data (PageRank, harmonic centrality) and backlinks come from the Common Crawl web graph.
charteroak_edu.profile
Current Scores

Web-graph authority (0-100)

Domain scores measure charteroak.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 charteroak.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.

19
Domain PageRank
0
Host PageRank
11
WWW PageRank
95
Domain Harmonic Centrality
94
Host Harmonic Centrality
94
WWW Harmonic Centrality
Site Intelligence

Homepage

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

TitleFinish your Degree Online | Charter Oak State College
OG TitleFinish your Degree Online | Charter Oak State College
OG Site NameCharter Oak State College
Twitter TitleFinish your Degree Online | Charter Oak State College
Twitter Cardsummary_large_image
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.

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: CollegeOrUniversity.

JSON-LD block (1,010 bytes)
{"@context":"http://schema.org","@type":"CollegeOrUniversity","name":"Charter Oak State College","url":"https://www.charteroak.edu","foundingDate":"1973","logo":"https://www.charteroak.edu/_resources/images/COSC_Logo_tagline_web.png","telephone":"+18605153800","location":{"@type":"Place","address":{"@type":"PostalAddress","streetAddress":"185 Main Street","addressLocality":"New Britain","addressRegion":"CT","postalCode":"06051","addressCountry":"US"}},"contactPoint":[{"@type":"ContactPoint","telephone":"+18605153800","contactType":"General Inquiries","areaServed":"US","availableLanguage":["English"]},{"@type":"ContactPoint","telephone":"+18605153701","email":"admissions@charteroak.edu","contactType":"Admissions","areaServed":"US","availableLanguage":["English"]}],"sameAs":["https://www.facebook.com/CharterOak","https://x.com/CharterOak","https://www.instagram.com/charteroakstatecollege/","https://www.linkedin.com/school/charter-oak-state-college/","https://www.youtube.com/user/charteroakstate"]}
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 charteroak.edu and domain-level for charteroak.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.

18
Host Backlinks
339
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 charteroak.edu (including its subdomains), ranked by the linker's PageRank. The table shows the top 339; 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
wikipedia.org9053
blogspot.com8648
b-cdn.net8242
sohu.com8038
constantcontact.com7840
nasa.gov7740
dol.gov7539
ct.gov7339
prweb.com7238
collegeboard.org7036
umass.edu6936
bncollege.com6839
wikidot.com6838
uconn.edu6736
mydegreeguide.com6734
memberclicks.net6636
tfaforms.net6635
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libretexts.org6437
archiveteam.org6234
campustechnology.com6136
edtechmagazine.com6135
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nursejournal.org5625
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ng.mil5524
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uopeople.edu5426
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officer.com5134
cscc.edu5134
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learn.org5125
nucamp.co5123
ct.edu5034
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scholaro.com4925
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ctstate.edu4733
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frederick.edu4422
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perrill.com4420
msjc.edu4333
azwestern.edu4324
fortherecordmag.com4323
onlinepsychologydegree.info4223
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stvincents.org4221
collegevaluesonline.com4133
teachercertificationdegrees.com4124
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back2college.com4033
brbc.org4033
studentdisciplinedefense.com4033
ler.me4033
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todaysstudents.org4020
edvisorly.com3933
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collegeaffordabilityguide.org3923
herkimer.edu3923
sunyempirefaculty.net3833
academicgates.com3833
medicaltechnologyschools.com3823
ccm-ct.org3822
authority.org3733
collegeiq.com3733
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psychologyschoolguide.net3723
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onlineschoolscenter.com3623
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essentialhealthcarenews.com3533
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worldscholarshipforum.com3523
bachelorsdegreecenter.org3522
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ctnonprofitalliance.org3119
psychologydegreeguide.org3023
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ctafterschoolnetwork.org3021
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healthcareadministrationedu.org2619
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ibmc.edu2520
wikidot.org2520
iohs.edu2517
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ctsurveyors.org2419
saltriverschools.org2323
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whchamber.com2320
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willowshealthcare.com2220
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gamewarden.org2219
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kayladas.com2218
nationalapplicationcenter.com2123
policeofficer.org2123
collegematchup.net2122
dualcreditathome.com2119
canadiannewsonline.com2118
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collegiateguide.com2113
miamikillianhs.net2113
nextgenmfg.org2022
affordabledegreeguide.org2018
online-bachelor-degrees.com1921
waterburypromise.org1920
ctsupportgroup.org1919
worldbusinesspromote.com1918
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knowledger.de1423
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healthcaresystemcareersedu.org717
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thestudentschool.org713
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thecommunitylink.org68
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taskwhiz.com50
domains.foundation418
getonlinedegrees.org413
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cpc101.com412
afcheagov.org47
buildinganark.com45
seegenius.nl322
constitute.net318
cbcscertification.com313
merocollege.com311
changetalkllc.com217
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connecticut-lodging.com217
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met2program.org212
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onlineceo.org117
psycho-reseaux.info113
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usamsedu.org15
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fnpu.org00
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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 charteroak.edu specifically, ranked by the linker's PageRank. The table shows the top 18; 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)