Last updated: September 2026
Global rank: Worldwide · 2026-09
#254,845
AI visibility: Grade D
56
SEO health: Not audited
—
Visits
290
per month, estimated
Keywords
225
ranking in Google
Organic share
100%
290 organic visits
LLMS.txt
Published
150 lines AI engines can read
You're seeing the free preview of c21.com
c21.com Company Profile
Century 21 runs a network of real estate offices that connect people with agents who handle property sales, purchases, and related services. The company maintains local branches in numerous markets, giving clients access to listings for homes, apartments, and some commercial spaces through a shared system. Agents manage the day-to-day work of showing properties, negotiating offers, and guiding paperwork from start to…
Founded in 1971 (about 55 years ago), Century 21 Real Estate is based in Madison, United States. Its workforce is listed as more than 10,001 employees. Its profile files it under Real Estate, with further tags for Brokerage, Franchise and Property Management. Total funding on record is Bootstrapped. Its tagline reads: "Global real estate services for buying, selling and renting properties".
- Sector
- Real Estate
- Headquarters
- Madison, United States
- Founded
- 1971
- Employees
- 10,001+
- Revenue
- Not Disclosed
- Funding
- Bootstrapped
c21.com Web Traffic Statistics
Key findings
- Century 21 Real Estate (Real Estate) is ranked #254,845 worldwide in our September 2026 domain ranking, down 57,926 places from #196,919 in August 2026.
- It is estimated to receive about 290 visits a month from search, 100% of it organic, across 225 ranking keywords.
- Its AI visibility score is 56 out of 100 (grade D), with a published llms.txt of 150 lines.
| Month | Rank | Move |
|---|---|---|
| September 2026 | #254,845 | ▼ 57,926 |
| August 2026 | #196,919 | ▼ 31,495 |
| July 2026 | #165,424 | ▼ 49,096 |
| June 2026 | #116,328 | — |
| May 2026 | #116,328 | ▲ 19,757 |
| April 2026 | #136,085 | ▲ 77 |
| March 2026 | #136,162 | ▲ 26,527 |
| February 2026 | #162,689 | — |
What this company does
Century 21 runs a network of real estate offices that connect people with agents who handle property sales, purchases, and related services. The company maintains local branches in numerous markets, giving clients access to listings for homes, apartments, and some commercial spaces through a shared system. Agents manage the day-to-day work of showing properties, negotiating offers, and guiding paperwork from start to…
c21.com Traffic and Visitor Engagement
Search engines send c21.com an estimated 290 visits a month. Effectively all of it is organic — about 290 visits from unpaid results. Spread across 225 ranking keywords, that averages roughly 1.3 organic visits per keyword.
Monthly visits
290
Latest estimate
Change
No monthly history yet
It starts building from the first scan
Organic visits
290
100% of all traffic
Paid visits
0
No paid search detected
Organic vs paid
100%
0%
We don't hold a month-by-month history for this domain yet.
The traffic dashboard builds one from the first scan onwards.
c21.com AI Visibility
c21.com scores 56 out of 100 on our AI visibility scale, grade D. It takes full marks for LLMS.txt. The biggest gap is SEO health, at 0 of 20 points (Not scanned yet), worth 20 points if closed. It also loses points on Crawlability (0/10), Company profile (16/25) and Structured data (0/5).
Grade D
Scored from this domain's own data — llms.txt, profile completeness, technical health, crawlability and structured data.
Present
5/8 core fields
Not scanned yet
Not scanned yet
Not detected
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c21.com LLMS.txt
The llms.txt on c21.com runs to 150 lines (5,914 characters) across 12 sections, last generated in April 2026. It introduces the site as "c21.com". It tells AI engines the business works in Real Estate Brokerage, Property Sales and Franchising. It describes 4 products, with prices such as Property Search Platform at Free, Market Reports at Free and Agent Matching at Free. Services it lists include Home Buying Assistance, Home Selling, Property Rentals and Commercial Real Estate. The audience it names is Homeowners, Buyers, Renters, Investors, aged 25-65 (Global). Technologies it mentions include MLS, CRM, Google Maps and Matterport Virtual Tours. The keywords it claims start with "century 21", "real estate", "buy home" and "sell house".
Status
Published
AI engines can read it
Lines
150
In the file
Size
5.9K
Characters
Sections
12
Updated Apr 21, 2026
What the file says
# c21.com ## About Century 21 Real Estate operates as a premier international real estate franchise network facilitating property transactions globally. The company supports a network of over 140,000 agents across thousands of offices in more than 80 countries. Services encompass buying, selling, renting, and managing residential and commercial properties. Advanced digital tools provide property searches, market reports, and virtual tours. Local agents deliver tailored advice leveraging extensive market data. Century 21 prioritizes agent training and technology adoption for superior client experiences. The platform connects users to listings and professional services seamlessly. Franchisees benefit from brand recognition and operational support. The company adapts to diverse real estate markets worldwide. Commitment to integrity and innovation defines its operations. **Areas of Work:** Real Estate Brokerage, Property Sales, Franchising ## Things to Remember - **Website:** https://c21.com - **Address:** Madison, New Jersey, USA - **Contact:** - **Phone:** - **Hours:** - **Timezone:** - **Currency:** USD - **Company Type:** Private - **Employees:** 140,000+ - **Revenue:** Not Disclosed - **Hiring Status:** Not currently hiring ## Products - **Property Search Platform** (Free): Online tool for browsing listings - **Virtual Tours** (Contact for pricing): 360-degree property
Sections in the file
Areas of work
Keywords it claims
Technologies
Products it tells AI about
- Property Search PlatformFree
- Virtual ToursContact for pricing
- Market ReportsFree
- Agent MatchingFree
Services it tells AI about
- Home Buying AssistanceCommission-based
- Home SellingCommission-based
- Property RentalsCommission-based
- Commercial Real EstateCommission-based
- Relocation ServicesContact for pricing
Competitors it names
Audience it targets
Homeowners, Buyers, Renters, Investors · 25-65 · Global
Company type
Private
c21.com Organic Keywords
Google lists c21.com for about 225 keywords, which together bring an estimated 290 organic visits a month.
Ranking keywords
225
Found in Google for this domain
Visits they bring
290
Estimated organic visits a month
Top ranking keywords
No ranked-keyword data cached for this domain yet.
Ranked Keywords pulls the full list on its first run.
What it ranks for
c21.com Competitors and Alternatives
Century 21 Real Estate's company profile names zillow.com, realtor.com, redfin.com and compass.com as competitors. Its own llms.txt adds kw.com and remax.com. Outside its market, the domains ranked closest to it in our worldwide ranking are egospodarka.gov.pl, zoblcavrbj.net, justimmo.at and leoexpress.com.
c21.com Traffic by Country
Which markets this brand actually serves, and where the web links to it from.
Top customer markets
AI estimate · live webWe only measure visitor geography for domains whose analytics are connected to us. For everyone else this is read live from the web and shown as an estimate — never mixed in with the measured numbers.
No market breakdown available for this brand.
Where its backlinks come from
Measured. The country each linking site is hosted in — a real signal of which regions know this brand.
No backlink sample for this domain yet.
Backlink Analytics collects one on its first run.
c21.com Backlink Analytics
Who vouches for this domain. Strong, varied links are still the clearest signal of authority — to search engines and to AI engines that cite sources.
We haven't run a backlink crawl for c21.com yet, so there are no link counts to show. Backlink Analytics builds the profile on its first run and it appears here after that.
—
links on file
c21.com SEO Audit
How the site itself performs — speed, accessibility and the technical basics both search crawlers and AI crawlers depend on.
This site hasn't been audited yet.
The SEO report runs a fresh crawl and scores over 100 technical checks.
Companies ranked next to c21.com
Neighbours of #254,845 in our worldwide ranking — each with its own report.
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