antarctica21.com
Link authority for antarctica21.com (registrable domain: antarctica21.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 antarctica21.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 antarctica21.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 antarctica21.com presents on its own homepage: the page title, description, and the social share markup it publishes. Pulled from https://antarctica21.com.
| Title | Antarctica Expedition Cruise - Fly & Sail to Antarctica - Antarctica21 |
|---|---|
| Description | Join us on an Antarctica Cruise, fly over the Drake Passage, and explore the 7th Continent on our boutique small vessels. Learn more about Antarctica21's expeditions. |
| OG Title | Antarctica Expedition Cruise - Fly & Sail to Antarctica - Antarctica21 |
| OG Description | Join us on an Antarctica Cruise, fly over the Drake Passage, and explore the 7th Continent on our boutique small vessels. Learn more about Antarctica21's expeditions. |
| Twitter Title | Antarctica Expedition Cruise - Fly & Sail to Antarctica - Antarctica21 |
| 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.
| antarctica_21 | |
| antarctica21 | |
| 5293903 (business) | |
| Youtube | antarctica21 |
| Contact pages | https://antarctica21.com/contact-us |
|---|---|
| Emails | sales@antarctica21.com |
| Phones |
+56(2)22318142 +1(877)9942994 |
| Blog | https://antarctica21.com/journal-category/news |
Structured data (JSON-LD)
The schema.org markup this homepage publishes: the machine-readable identity search engines and AI systems read. Types found: TravelAgency, Organization, WebSite, FAQPage.
JSON-LD block (5,476 bytes)
{
"@context": "https://schema.org",
"@type": "TravelAgency",
"name": "Antarctica21",
"description": "Antarctica21 operates Antarctic air-cruise expeditions and sea voyages, offering fly and sail expeditions to Antarctica, South Georgia, Falkland Islands, and Patagonia & Chilean Fjords on boutique vessels.",
"url": "/",
"logo": {
"@type": "ImageObject",
"url": "https://cdn.prod.website-files.com/66f12032b3f2015fa639ef3e/671b6c40ffaeccd6befbd93d_Antarctica21-Logo.webp"
},
"image": [
{
"@type": "ImageObject",
"url": "https://cdn.prod.website-files.com/66f12032b3f2015fa639ef3e/67064899be6e3f6342ab3b03_LND_AXXI_1112_Orne%20Harbour_(c)_Christian%20Cabanillas.JPG%20(1).webp",
"caption": "Antarctica expedition cruise"
},
{
"@type": "ImageObject",
"url": "https://cdn.prod.website-files.com/66f12032b3f2015fa639ef3e/676da6da6b8d7df0adba0fb8_Antarctica21-Antarctic-aircraft%20(4).webp",
"caption": "A view from onboard the Antarctic flight landing in King George Island"
},
{
"@type": "ImageObject",
"url": "https://cdn.prod.website-files.com/66f12032b3f2015fa639ef3e/676daa5c50bafd530705e874_A21_FINEART_MAG09-CA_2022-23KAREN_PARADA-DEWETAK_15.webp",
"caption": "Antarctica21's Magellan Explorer in Antarctica"
}
],
"address": {
"@type": "PostalAddress",
"addressCountry": "CL"
},
"telephone": "+56 (2) 2231 8142",
"email": "sales@antarctica21.com",
"sameAs": [
"https://www.instagram.com/antarctica_21/"
],
"makesOffer": [
{
"@type": "Offer",
"itemOffered": {
"@type": "TouristTrip",
"name": "Classic Antarctica Air-Cruise",
"description": "Our most popular Antarctic expedition itinerary. Fly over the Drake Passage and explore Antarctica on a boutique vessel.",
"duration": "P8D",
"offers": {
"@type": "Offer",
"price": "13795",
"priceCurrency": "USD",
"availability": "https://schema.org/InStock"
}
}
},
{
"@type": "Offer",
"itemOffered": {
"@type": "TouristTrip",
"name": "Polar Circle Air-Cruise",
"description": "The Polar Circle air-cruise is one of the most adventurous expeditions that we offer.",
"duration": "P10D",
"offers": {
"@type": "Offer",
"price": "13795",
"priceCurrency": "USD",
"availability": "https://schema.org/InStock"
}
}
},
{
"@type": "Offer",
"itemOffered": {
"@type": "TouristTrip",
"name": "Antarctica Express Air-Cruise",
"description": "An introductory and affordable Antarctic experience.",
"duration": "P6D",
"offers": {
"@type": "Offer",
"price": "13795",
"priceCurrency": "USD",
"availability": "https://schema.org/InStock"
}
}
},
{
"@type": "Offer",
"itemOffered": {
"@type": "TouristTrip",
"name": "Antarctica & South Georgia Air-Cruise",
"description": "Discover these two distant and beautiful destinations, a true adventure experience.",
"duration": "P18D",
"offers": {
"@type": "Offer",
"price": "13795",
"priceCurrency": "USD",
"availability": "https://schema.org/InStock"
}
}
},
{
"@type": "Offer",
"itemOffered": {
"@type": "TouristTrip",
"name": "Patagonia & Chilean Fjords Sea Voyage",
"description": "A wilderness expedition, exploring and sailing between massive blue-hued glaciers and the sharp peaks of the Andes mountains.",
"duration": "P9D",
"offers": {
"@type": "Offer",
"price": "13795",
"priceCurrency": "USD",
"availability": "https://schema.org/InStock"
}
}
},
{
"@type": "Offer",
"itemOffered": {
"@type": "TouristTrip",
"name": "Falklands (Malvinas) Sea Voyage",
"description": "Enjoy the dramatic landscape and daily excursions to discover incredible wildlife and the local island culture.",
"duration": "P10D",
"offers": {
"@type": "Offer",
"price": "13795",
"priceCurrency": "USD",
"availability": "https://schema.org/InStock"
}
}
},
{
"@type": "Offer",
"itemOffered": {
"@type": "TouristTrip",
"name": "Falklands (Malvinas) & South Georgia Sea Voyage",
"description": "Pair a rich adventure experience in the Falklands (Malvinas) with an in-depth visit to South Georgia.",
"duration": "P17D",
"offers": {
"@type": "Offer",
"price": "13795",
"priceCurrency": "USD",
"availability": "https://schema.org/InStock"
}
}
},
{
"@type": "Offer",
"itemOffered": {
"@type": "TouristTrip",
"name": "Falklands (Malvinas), South Georgia & Antarctica Sea Voyage",
"description": "Three wild and scenic destinations in one.",
"duration": "P20D",
"offers": {
"@type": "Offer",
"price": "13795",
"priceCurrency": "USD",
"availability": "https://schema.org/InStock"
}
}
}
],
"aggregateRating": {
"@type": "AggregateRating",
"ratingValue": "5",
"reviewCount": "8"
}
}
JSON-LD block (1,541 bytes)
{
"@context": "https://schema.org",
"@type": ["Organization", "TravelAgency"],
"@id": "https://www.antarctica21.com/#organization",
"name": "Antarctica21",
"url": "https://www.antarctica21.com/",
"description": "Antarctica21 operates fly & cruise expeditions to Antarctica and sea voyages to Antarctica, the Falkland Islands (Islas Malvinas), South Georgia, and Patagonia & Chilean Fjords.",
"foundingDate": "2003",
"email": "sales@antarctica21.com",
"telephone": "+56-2-2231-8142",
"sameAs": [
"https://www.facebook.com/antarctica21",
"https://www.instagram.com/antarctica_21/",
"https://www.linkedin.com/company/5293903/",
"https://www.youtube.com/user/antarctica21"
],
"address": {
"@type": "PostalAddress",
"addressLocality": "Punta Arenas",
"addressCountry": "CL"
},
"contactPoint": [
{
"@type": "ContactPoint",
"contactType": "customer service",
"telephone": "+56-2-2231-8142",
"areaServed": "CL",
"availableLanguage": ["en", "es"]
},
{
"@type": "ContactPoint",
"contactType": "sales",
"telephone": "+1-877-994-2994",
"areaServed": ["US", "CA"],
"availableLanguage": ["en"]
}
],
"areaServed": [
{
"@type": "Place",
"name": "Antarctica"
},
{
"@type": "Place",
"name": "South Georgia"
},
{
"@type": "Place",
"name": "Falkland Islands (Islas Malvinas)"
},
{
"@type": "Place",
"name": "Patagonia & Chilean Fjords"
}
]
}
JSON-LD block (258 bytes)
{
"@context": "https://schema.org",
"@type": "WebSite",
"@id": "https://www.antarctica21.com/#website",
"url": "https://www.antarctica21.com/",
"name": "Antarctica21",
"publisher": {
"@id": "https://www.antarctica21.com/#organization"
}
}
JSON-LD block (2,575 bytes)
{
"@context": "https://schema.org",
"@type": "FAQPage",
"@id": "https://www.antarctica21.com/#faq",
"mainEntity": [
{
"@type": "Question",
"name": "What makes an air-cruise different from a traditional Antarctic cruise?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Instead of spending two days sailing across the notoriously rough Drake Passage, Antarctica21 air-cruises allow travelers to fly over it in just two hours. From Punta Arenas, Chile, guests board a chartered aircraft and land at King George Island in Antarctica, where they embark on a boutique expedition ship. This approach allows travelers to spend more time exploring Antarctica while avoiding potential seasickness. With a maximum of 76 guests per voyage, the boutique ships also offer a more personalized Antarctic experience."
}
},
{
"@type": "Question",
"name": "When is the best time to travel to Antarctica?",
"acceptedAnswer": {
"@type": "Answer",
"text": "The Antarctic travel season takes place during the austral summer when temperatures are milder along the Antarctic Peninsula and daylight hours are extended. Antarctica21 air-cruises operate from late November through March. Early season features pristine snow and courting penguins, mid-season offers long days and peak wildlife activity, and late season provides dramatic sunsets and whale watching opportunities."
}
},
{
"@type": "Question",
"name": "What will the weather be like in Antarctica?",
"acceptedAnswer": {
"@type": "Answer",
"text": "During the austral summer, temperatures in Antarctica average around 0°C (32°F), although wind chill can make it feel colder. Travelers can expect cold but often sunny days, brisk winds, and occasional stormy conditions with snow flurries. Weather conditions can change quickly, so guests should be prepared for varying conditions."
}
},
{
"@type": "Question",
"name": "Can children travel on Antarctica21 expeditions?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Children aged 8 and above are welcome on air-cruises if they meet passenger requirements: at least 1.20 meters (3.9 feet) tall, weighing 30 kilograms (66 pounds) or more, and accompanied by a responsible adult who signs a waiver and assumes responsibility. Children under 12 receive a 5% discount. On sea voyages, children aged 12 and above are welcome and must also be accompanied by a responsible adult."
}
}
]
}
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 antarctica21.com and domain-level for antarctica21.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 antarctica21.com (including its subdomains), ranked by the linker's PageRank. The table shows the top 133; 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 antarctica21.com specifically, ranked by the linker's PageRank. The table shows the top 26; the download carries the full stored list (up to 10,000 linkers) as JSON. Click a linker for its own site profile.
| Linking Site | Linker PageRank | Linker Harmonic Centrality |
|---|---|---|
| elpais.com | 70 | 28 |
| observer.com | 66 | 27 |
| www.afar.com | 58 | 23 |
| www.fitnessmanagement.de | 39 | 21 |
| www.antarctica21.com | 34 | 16 |
| www.wildjunket.com | 33 | 17 |
| www.lata.travel | 32 | 16 |
| trailandsummit.com | 30 | 15 |
| gymfactory.net | 29 | 15 |
| blog.investchile.gob.cl | 27 | 21 |
| fjordphyto.ucsd.edu | 21 | 16 |
| www.cruisegid.ru | 20 | 15 |
| limitesur.cl | 20 | 13 |
| southernconeguidebooks.blogspot.com | 19 | 13 |
| hotelnewscolombia.com | 19 | 8 |
| unanswered.io | 17 | 14 |
| nickscruisecorner.nycruiseinfo.com | 16 | 14 |
| www.cruisingjournal.com | 16 | 14 |
| redturismochile.cl | 15 | 11 |
| hotelcortijochico.com | 11 | 13 |
| www.expeditionguideacademy.com | 5 | 10 |
| zburatorul.com | 3 | 9 |
| www.nomade.com.au | 1 | 13 |
| antarctica7.com | 0 | 7 |
| voyagesnetwork.com | 0 | 0 |
| www.voyagessuzannelemay.com | 0 | 0 |