zfsbook ✓ Operating Systems

Pagespeed Score

Desktop	93/100	✔
Mobile	71/100	❗

Optimization Stats

Field	Data	Result
Page Size	121 KB	✔
Compression	121 KB (-0%)	✔
Text/Html Ratio	16513 / 123839 (bytes) = 13.33%	✔
Load Time	0.22 second	✔
Mobile Ready	0/100	✘
In-Page Links	174	✔
Doc Type	HTML 5	✔
Encoding	UTF-8	✔
Declared Language	EN-US	✔
Preferred Domain	No	❗
Robots.txt	Yes	✔
Url Rewrite	No	✔
Underscores in url	No	✔
Images Without ALT	2 / 10	✘
Embedded Objects (Desktop)	No	✔
Embedded Objects (Mobile)	No	✔
Iframe	No	✔
Custom 404 page	Yes	✔
Email Privacy	Yes	✔
Gsafe browsing	Yes	✔
Analytics	No	✘
W3C Validity	No	✘

Keyword Consistency ❗

Keywords	Freq	Title	Desc	<H>
amazon	60	✘	✘	✘
freebsd	25	✘	✘	✘
storage	18	✘	✘	✘
print	14	✘	✘	✘
jails	10	✘	✘	✘
openbsd	9	✘	✘	✘
filesystems	9	✘	✘	✘
ebook	8	✘	✘	✘
advanced	7	✘	✘	✘
system	7	✔	✘	✘
book	7	✘	✘	✘
drm-free	7	✘	✘	✘
absolute	7	✘	✘	✘
edition	6	✘	✘	✘
operating	6	✔	✘	✘

66/100

Update

May, 19 2024

With 0.22 seconds in page load, 121 KB of page size and all other reports below, the zfsbook.com has a SEO score of 66 out of 100

Meta tags data

Title	Operating Systems - Michael W Lucas
Description	CONFINE YOUR SOFTWARE
Keyword

Domain Registration

Age	10 Years, 75 Days
Created	6th-Mar-2014
Updated	30th-Jan-2024
Expiry	6th-Mar-2025

DNS Data

Host	Type	Ttl	Other
zfsbook.com	A	293	ip:216.246.108.140
zfsbook.com	NS	300	target:oldns3.scaleengine.net
zfsbook.com	NS	300	target:oldns2.scaleengine.net
zfsbook.com	NS	300	target:oldns1.scaleengine.net
zfsbook.com	NS	300	target:oldns4.scaleengine.net
zfsbook.com	SOA	300	mname:oldns1.scaleengine.net rname:hostmaster.zfsbook.com serial:2018102800 refresh:300 retry:3600 expire:1209600 minimum-ttl:300
zfsbook.com	MX	300	pri:30 target:spamassassin3.scaleengine.net
zfsbook.com	MX	300	pri:20 target:spamassassin2.scaleengine.net
zfsbook.com	MX	300	pri:10 target:spamassassin1.scaleengine.net
zfsbook.com	MX	300	pri:40 target:spamassassin4.scaleengine.net
zfsbook.com	TXT	300	txt:v=spf1 a mx ip4:216.246.108.138 ip4:216.246.108.139 ip4:216.246.108.136/29 ip4:65.39.148.0/24 ip4:64.120.17.16/29 ip4:64.85.162.192/29 ip4:64.85.163.112/28 ?all

http Headers

HTTP/1.1 302 Found
Date: Sun, 19 May 2024 11:12:47 GMT
Server: Apache/2.2.31 (FreeBSD) mod_gzip/2.1.0 DAV/2 PHP/5.5.30 mod_ssl/2.2.31 OpenSSL/1.0.2d
Location: https://mwl.io/nonfiction/os#fmaz
Content-Length: 217
Content-Type: text/html; charset=iso-8859-1

HTTP/1.1 200 OK
Date: Sun, 19 May 2024 11:12:47 GMT
Server: Apache
X-Powered-By: PHP/8.2.18
Vary: Accept-Encoding,Cookie
Cache-Control: max-age=3, must-revalidate
X-Frame-Options: SAMEORIGIN
Strict-Transport-Security: max-age=15780000;
X-Content-Type-Options: nosniff
Permissions-Policy: interest-cohort=()
X-Clacks-Overhead: GNU Terry Pratchett
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8

WHOIS Data

Domain Name: zfsbook.com
Registry Domain ID: 1849457653_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.gandi.net
Registrar URL: http://www.gandi.net
Updated Date: 2024-01-30T13:50:26Z
Creation Date: 2014-03-06T21:02:39Z
Registrar Registration Expiration Date: 2025-03-06T22:02:39Z
Registrar: GANDI SAS
Registrar IANA ID: 81
Registrar Abuse Contact Email: abuse@support.gandi.net
Registrar Abuse Contact Phone: +33.170377661
Reseller:
Domain Status: clientTransferProhibited http://www.icann.org/epp#clientTransferProhibited
Domain Status:
Domain Status:
Domain Status:
Domain Status:
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization:
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: Ontario
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: CA
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext:
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext:
Registrant Email: d7dcda32401a3d684bb23ed4bffe6549-17173475@contact.gandi.net
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext:
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext:
Admin Email: d7dcda32401a3d684bb23ed4bffe6549-17173475@contact.gandi.net
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext:
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext:
Tech Email: d7dcda32401a3d684bb23ed4bffe6549-17173475@contact.gandi.net
Name Server: OLDNS1.SCALEENGINE.NET
Name Server: OLDNS2.SCALEENGINE.NET
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
Name Server:
DNSSEC: Unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2024-05-19T11:12:50Z

Server Location

Server IP	216.246.108.140
Server Location	United States of America
Service Provider	AS-COLOCROSSING

Domain Availability

Domains (TLD)	Status
zfsbook.net	Available
zfsbook.org	Already Registered
zfsbook.biz	Available
zfsbook.io	Already Registered
zfsbook.info	Already Registered

Typo Availability

Domains (TLD)	Status
zfsbok.com	Available
xfsbook.com	Available
sfsbook.com	Available
afsbook.com	Available
zcsbook.com	Available

Check More

Comparecarinsurance.com

Zfsbook.com SEO Analysis