curriculum21.com homepage screenshot

curriculum21.com website report

Heidi Hayes Jacobs

Curriculum21 was registered 18 years 5 months ago, is ranked #9,042,817 worldwide (top 261%), has an estimated value of $734. It may earn around $19 per month from advertising.

Education English

Last updated

Estimated worth
$734
Automated valuation
Global rank
#9,042,817
Improving
Monthly visitors
204
10K page views
Domain age
18 years 5 months
Since Jun 7, 2008
Hosted in
United States
Leaseweb USA
Security headers
44/100
Response 0.84 s

Key facts about curriculum21.com

Domain
curriculum21.com
Website name
Heidi Hayes Jacobs
Category
Education
Estimated worth
$734
Global rank
#9,042,817 (top 261% of 3.5M ranked sites)
Monthly visitors (est.)
204 · 10K page views
Registered
June 7, 2008 (18 years 5 months ago)
Expires
June 7, 2027
Registrar
GoDaddy.com, LLC
Server location
Centreville, United States
Network
Leaseweb USA AS30633
Email provider
Google Workspace
Language
English
Data updated

Estimated traffic & revenue

Page viewsVisitorsAd revenue
Daily3407$1
Monthly10,209204$19
Yearly122,5082,448$228

Modelled from the global rank — not measured analytics. Use them to compare sites, not as exact figures.

Global rank history

#13.1M #25.4M #37.8M 2026-06: #37,752,939 Jun 26 2026-07: #13,060,483 Jul 26 2026-08: #13,053,165 Aug 26
Monthly values
MonthGlobal rank
2026-06#37,752,939
2026-07#13,060,483
2026-08#13,053,165

Source: Rankeez (Tranco, Majestic, DomCop, Cisco Umbrella).

How we estimate curriculum21.com's value

$734

The estimate is the higher of two independent approaches, both computed automatically from public data.

  • Traffic value: $391Driven by the global rank #9,042,817 (≈10K page views / month) plus a capped age bonus.
  • Activity value: $734Domain age plus observable signs of an active, professionally run website.

Activity signals found

Domain age (18 years 5 months)$302
Active website with metadata+$150
Professional email (Google Workspace)+$150
Security headers (44/100)+$132

Revenue, sales or private analytics are not public and are not included. This is not an appraisal or a sale price.

On-page SEO

TitleHeidi Hayes Jacobs
18 chars
Meta descriptionMissing
Meta keywordsNone
LanguageEnglish
Response time0.84 s Average

Homepage structure

H1 headings1
H2 headings1
H3 headings0
H4 headings0
Paragraphs7
Links14
Images8
Bold text9

Exactly one H1 heading — good practice.

Technology & infrastructure

CDN / proxyNone detected
Web servernginx
Platform / languageWordPress
DNS providerUnknown
Email providerGoogle Workspace
SPF recordMissing
IPv6 (AAAA)No
CAA recordNo

Services verified in DNS

No third-party verification records found.

Domain name

Extension.com — the most widely used generic extension, originally for commercial sites
Name length12 characters Medium
Hyphens / digitsNo hyphen · contains digits

Security headers

44
3 passed · 2 to improve · 4 missing
Homepage answered HTTP 200 at https://curriculum21.com/ · checked Oct 29, 2026
  • HTTPSThe homepage is served over an encrypted HTTPS connection.
  • HTTP → HTTPS redirectVisitors typing http:// are redirected to the secure version.
  • Strict-Transport-Security (HSTS)Not set: browsers may still try plain HTTP first.
  • Content-Security-PolicyNot set: no restriction on which scripts may run.
  • Clickjacking protectionNeither X-Frame-Options nor CSP frame-ancestors is set.
  • X-Content-Type-OptionsNot set to nosniff.
  • Referrer-PolicyNot set (browsers default to strict-origin-when-cross-origin).
  • Permissions-PolicyNot set: browser features are not explicitly restricted.
  • Software version disclosureNo software version numbers disclosed in headers.
Raw HTTP response headers
HTTP/2 200
server: nginx
date: Thu, 29 Oct 2026 04:10:05 GMT
content-type: text/html; charset=UTF-8
vary: Accept-Encoding
link: <https://curriculum21.com/wp-json/>; rel="https://api.w.org/", <https://curriculum21.com/wp-json/wp/v2/pages/3404>; rel="alternate"; title="JSON"; type="application/json", <https://curriculum21.com/>; rel=shortlink
content-encoding: gzip

Hosting

IP address207.244.121.250
Location Centreville, United States
Network (ISP)Leaseweb USA
Autonomous systemAS30633 Leaseweb USA, Inc.
Server softwarenginx

Nameservers

HostIPCountry
ns1.us.opalstack.com45.79.107.55 United States
ns2.us.opalstack.com23.92.21.232 United States
ns3.us.opalstack.com45.56.74.5 United States

Domain registration (WHOIS)

RegistrarGoDaddy.com, LLC
CreatedJune 7, 2008 18 years 5 months ago
UpdatedJune 8, 2023
ExpiresJune 7, 2027 in 205 days
StatusclientDeleteProhibitedclientRenewProhibitedclientTransferProhibitedclientUpdateProhibited
Raw WHOIS record
   Domain Name: CURRICULUM21.COM
   Registry Domain ID: 1489025383_DOMAIN_COM-VRSN
   Registrar WHOIS Server: whois.godaddy.com
   Registrar URL: http://www.godaddy.com
   Updated Date: 2023-06-08T17:14:43Z
   Creation Date: 2008-06-07T19:38:31Z
   Registry Expiry Date: 2027-06-07T19:38:31Z
   Registrar: GoDaddy.com, LLC
   Registrar IANA ID: 146
   Registrar Abuse Contact Email: [email protected]
   Registrar Abuse Contact Phone: 480-624-2505
   Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
   Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
   Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
   Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
   Name Server: NS1.US.OPALSTACK.COM
   Name Server: NS2.US.OPALSTACK.COM
   Name Server: NS3.US.OPALSTACK.COM
   DNSSEC: unsigned
   URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2026-08-06T19:57:13Z <<<

For more information on Whois status codes, please visit https://icann.org/epp

NOTICE: The expiration date displayed in this record is the date the
registrar's sponsorship of the domain name registration in the registry is
currently set to expire. This date does not necessarily reflect the expiration
date of the domain name registrant's agreement with the sponsoring
registrar.  Users may consult the sponsoring registrar's Whois database to
view the registrar's reported date of expiration for this registration.

TERMS OF USE: You are not authorized to access or query our Whois
database through the use of electronic processes that are high-volume and
automated except as reasonably necessary to register domain names or
modify existing registrations; the Data in VeriSign Global Registry
Services' ("VeriSign") Whois database is provided by VeriSign for
information purposes only, and to assist persons in obtaining information
about or related to a domain name registration record. VeriSign does not
guarantee its accuracy. By submitting a Whois query, you agree to abide
by the following terms of use: You agree that you may use this Data only
for lawful purposes and that under no circumstances will you use this Data
to: (1) allow, enable, or otherwise support the transmission of mass
unsolicited, commercial advertising or solicitations via e-mail, telephone,
or facsimile; or (2) enable high volume, automated, electronic processes
that apply to VeriSign (or its computer systems). The compilation,
repackaging, dissemination or other use of this Data is expressly
prohibited without the prior written consent of VeriSign. You agree not to
use electronic processes that are automated and high-volume to access or
query the Whois database except as reasonably necessary to register
domain names or modify existing registrations. VeriSign reserves the right
to restrict your access to the Whois database in its sole discretion to ensure
operational stability.  VeriSign may restrict or terminate your access to the
Whois database for failure to abide by these terms of use. VeriSign
reserves the right to modify these terms at any time.

The Registry database contains ONLY .COM, .NET, .EDU domains and
Registrars.

DNS records

TypeHostValueTTL
Acurriculum21.comip: 207.244.121.2503592
NScurriculum21.comtarget: ns2.us.opalstack.com3600
NScurriculum21.comtarget: ns1.us.opalstack.com3600
NScurriculum21.comtarget: ns3.us.opalstack.com3600
SOAcurriculum21.commname: ns2.us.opalstack.com
rname: hostmaster.curriculum21.com
serial: 2026061609
refresh: 10800
retry: 3600
expire: 1814400
minimum-ttl: 3600
3600
MXcurriculum21.compri: 30
target: ASPMX2.GOOGLEMAIL.com
3600
MXcurriculum21.compri: 30
target: ASPMX3.GOOGLEMAIL.com
3600
MXcurriculum21.compri: 10
target: ASPMX.L.GOOGLE.com
3600
MXcurriculum21.compri: 20
target: ALT1.ASPMX.L.GOOGLE.com
3600
MXcurriculum21.compri: 30
target: ASPMX4.GOOGLEMAIL.com
3600
MXcurriculum21.compri: 20
target: ALT2.ASPMX.L.GOOGLE.com
3600
MXcurriculum21.compri: 30
target: ASPMX5.GOOGLEMAIL.com
3600

Websites similar to curriculum21.com

More alternatives on Similars.net →

curriculum21.com compared with similar websites

WebsiteGlobal rankEst. worthRegisteredHosted in
curriculum21.com#9,042,817$7342008 United States
anatomynext.com#9,042,824$2802015 United States
ecswe.net#9,042,604$4452003 United States
bayareawritingproject.org#9,043,339$4752002 United States
thepurposeinstitute.com#7,841,198$4172007 United States
phdthesiswriting.biz#9,043,579$145— United States
profilebooks.co.uk#9,041,821$4901996 United States

Websites ranked near curriculum21.com

  1. #9,042,743 autosaur.com $310
  2. #9,042,764 plattwhitelaw.com $490
  3. #9,042,806 fraserbicycle.com $475
  4. #9,042,811 ycfutures.cn $400
  5. #9,042,817 curriculum21.com $734
  6. #9,042,824 anatomynext.com $280
  7. #9,042,833 nitosoft.com $445
  8. #9,042,837 totallytomatoes.com $460
  9. #9,042,852 musiclapsley.com $280

Questions about curriculum21.com

When was curriculum21.com registered?

Curriculum21.com was registered on June 7, 2008, making it 18 years 5 months old.

Who is the domain registrar for curriculum21.com?

Curriculum21.com is registered through GoDaddy.com, LLC.

Where is curriculum21.com hosted?

Curriculum21.com's server (IP 207.244.121.250) is located in Centreville, United States.

How much is curriculum21.com worth?

We estimate curriculum21.com is worth $734. This is an automated estimate based on the site's global traffic rank, domain age and observable activity signals (professional email, business services, security, CDN) — not a professional appraisal or a real sale price.

How much traffic does curriculum21.com get?

Based on its rank, curriculum21.com receives roughly 204 unique visitors and 10K page views per month. These figures are modelled from the rank, not measured.

What is curriculum21.com's global rank?

Curriculum21.com has an estimated global rank of 9,042,817, sourced from Rankeez.com, which aggregates the Tranco, Majestic, DomCop and Cisco Umbrella rankings. Its rank has improved over the tracked period. This is an independent estimate, not affiliated with Amazon Alexa, which discontinued its own ranking service in 2022.

Who hosts curriculum21.com?

Curriculum21.com resolves to 207.244.121.250, on the network of Leaseweb USA (AS30633).

What email provider does curriculum21.com use?

According to its MX records, curriculum21.com receives email with Google Workspace. No SPF record was found.

When does curriculum21.com expire?

The domain registration of curriculum21.com is valid until June 7, 2027 (in 205 days), at GoDaddy.com, LLC. Owners usually renew before that date.

What websites are similar to curriculum21.com?

Popular websites in the same category as curriculum21.com include anatomynext.com, ecswe.net, bayareawritingproject.org, thepurposeinstitute.com, phdthesiswriting.biz.

Own curriculum21.com? Add the badge

curriculum21.com on StatMemory

Shows your live global rank. To cite this report: “StatMemory, curriculum21.com website report, https://statmemory.com/curriculum21.com”.

StatMemory is not affiliated with curriculum21.com. This report shows publicly available data (DNS, WHOIS, HTTP headers, public top-site lists) and automated estimates for information purposes.