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John's Web Page

NOTICE: This site is hosted on a Linux server!
As of January 1, 2026,
CITIZENS CALIFORNIA MUST NOT VISIT THIS WEB SITE!
(AB-1043 Notes at bottom, including GDPR advisories for EU citizens.)



...A collection of links to network tools I use.


ASCII Table

BIMI e-Mail Image DNS Record and Selectors
BIMI e-Mail Image DNS Record Builder
BIMI to SVG Image Converter

bLog

DMARC Validation Tool
DMARC Record Generator

Domain (DNS) Health
DNS Lookup
DNS Propagation Checker

(Free) DNS Resolvers
(Public Free) DNS List

Domain Registrar Price Comparison
Domain Registrar Price Comparison #2

(Privately Hosted) e-Mail
(Externally Hosted) e-Mail

Email IP Origin Traceer

Emoji

Free Favicon Generator

HTTP Header Checker

.htaccess Redirect Generator
.htaccess Redirect Generator #2

Icons

ICMP Types and Codes

(ASN) IP Lookup
(ASN) IP Lookup #2

IP Blacklist Check
IP Location and WhoIs Lookup
IP Lookup
(Your) Public IP

Internet Network tools

MAC Address Lookup

(List of) TCP and UDP Ports
(IP) Port Assignment Database

(Family-oriented) Search
Meta Crawler Search
(Meta) Search

(Reverse) Image Search
(Reverse) Image Search #2

Security Scan

Speed Test

SMTP Test

SPF Record Lookup and Checker
SPF Record Generator #2

Secure Certificate (SSL) Checker

TLS Version Checker

(Web Based) Traceroute


Notes:

In accordance with California Assembly Bill No. AB-1043 regarding Age verification signals: software applications and online services, since JohnsWebPage has no facilities to dynamically ascertain the name, age, or age-range of Web visitors, it is legally necessary to discontinue JohnsWebPage for California citizens by, at latest, January 1, 2027.

As of January 1, 2026, CITIZENS CALIFORNIA MUST NOT VISIT THIS WEB SITE

In an effort to OBEY ALL LAWS, California Citizens are asked to co-operate by not visiting this Web site, in accordance with California Assembly Bill No. AB-1043 which is believed to prohibit operating systems, services, etc. which can not, or do not, collect information about Web visitors, ages, etc. and provide that information,via some signal, to the State of California.

In accordance with GDPR (EU General Data Protection Regulation), please be advised this Web server firewall and logging utilities DO STORE AND RETAIN VISITORS' IP ADDRESSES; POTENTIAL SECURITY VIOLATIONS; DATE, TIME and FREQUENCY OF VISITS, VISITORS' BROWSER AND COMPUTER OPERATING SYSTEMS (i.e. Firefox, Linux, Windows, etc.), AMOUNT OF DATA TRANSFER, AND COUNTRY OF ORIGIN. If you do not consent to this, then you must not visit this Web site.

Finding safe, useful network utilities, I can access through our firewalls, is something of a task for me. I don't have to find the links again if I have them available everywhere I go This is faster than finding which browser on which device has the link I need, and possibly losing the links if I switch browsers. This is a work in progress.

I am trying to curiate links that do more of what they say they do with less 3rd party intervention. Some better utilities out there may involve 3rd parties. It is difficult to identify niche links do not involve, for instance, Cloudflare. Be aware, also, that some browsers initiate connections to some 3rd-party Web sites without clicking on any links. Just FYI....

There will not be any affiliate links put here but there will be facilities to suggest better links.

Also, future iterations of the Web site will attempt to restrict visits to this Web site from California citizens from visiting this Web page, as much as is reasonably possible, in accordance with AB-1043.