International Dialling Code Reverse Lookup - Online Country by Code
Enter a dialling code (+44, +1) to find which country it belongs to. Also search by country name. Static reference.
UD5 Toolkit
Query A, AAAA, MX, TXT, CNAME, NS, SOA records instantly
Enter a domain name, select record type, and click Lookup. Results sourced via Google DNS-over-HTTPS.
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Enter a dialling code (+44, +1) to find which country it belongs to. Also search by country name. Static reference.
Create a custom vibration or beep pattern from a short Morse code message. Design unique ringtone ideas.
Find average first and last frost dates for your zip code using cached NOAA data. Garden planning essential.
Paste a regular expression and get a step‑by‑step plain English explanation of what it does. Learn regex.
Build a date format string for SQL by toggling components (YYYY, MM, DD). See a live example for different databases.
Enter a message and render it as an image of dots and dashes. Customizable colors. Great for posters.
Enter text and generate the corresponding Morse code audio beeps. Adjust speed and tone. Great for learning and practicing CW. No download.
Create a custom click pattern with accents for 5/4, 7/8, or any complex meter. Visual and audio feedback.
Interactive guide to crimping RJ45 connectors. See the wire order for T568A/B standards. Helpful for DIY network cables.
Calculate the series resistor and power dissipation for a zener diode voltage regulator. Input voltage, output voltage, load current. Local only.
Use your keyboard or mouse as a straight key. Hear the tone and see the dots/dashes. Perfect for learning CW. Local.
Type two letters and see if your chosen font has a kerning pair for them. Adjust tracking and see live spacing.
Paste a list of JavaScript values and see them pretty‑printed as if in the browser console. Great for debugging.
Practice sending Morse code using a virtual straight key. Visual feedback and audio tone. Learn timing and proper fist.
Preview how a CMYK value will look on screen (approximate). Compare with its RGB equivalent. Pre‑press check.
Set a date in the far future or past and see a mock clock with impossible times. Purely for fun.
Create a clear, structured bug report or support ticket with environment, steps, and expected result. Copy/paste.
Enter LMP or conception date and get detailed week‑by‑week milestones, trimester info, and due date. Educational only.
Generate a random, completely nonsensical pseudocode block. Perfect for filling whiteboards in mockups. Just for laughs.
Design a realistic-looking fake receipt with custom store name, items, and total. For jokes and gags. No real transaction.
Set times to automatically switch light/dark theme on any website using a bookmarklet or live demo.
Paste HTML and see a collapsible tree of tags. Understand document outline and nesting. Handier than raw code.
Set a reminder to change smoke detector batteries every 6 months. Optional sound alert and visual countdown. Local browser notification, stay safe.
Upload an RGB image and simulate how it might look when printed in CMYK. See out‑of‑gamut warnings. Pre‑press helper.
Enter your vehicle to find the correct headlight, fog, and interior bulb part numbers. Prints a list.
Enter a domain and see public WHOIS info via a free API with rate limiting. Quick domain check.
Search a curated dictionary of modern internet acronyms (IMO, TBH, IYKYK) and slang. Simple offline-capable reference. No tracking.
Enter keywords and get domain name ideas by mixing, prefixing, suffixing, and replacing. Check availability indication.
Search a complete list of all top‑level domains. See which still have availability. For brand naming. Static reference.
Enter a three‑letter currency code like USD or EUR and instantly see the corresponding symbol and number of decimals. Quick developer reference.