# HomeLine Guard > HomeLine Guard is an independent information site about landline and home phones: how to block unwanted calls, what anonymous call rejection does, how caller ID names work and why the Do Not Call Registry does not stop every call. Its small tool reads only the area code of a US or Canadian number (region, time zone, warning signs) and never identifies an owner, carrier or line type. It is not affiliated with any carrier or agency and does not sell data. Editorial site about identifying unknown phone callers and understanding US/NANP area codes. It does not sell personal data and does not claim to identify the owner of a number. Written by June Aldous. Contact: hello@landlinehiddenfilter.com. ## Guides - [Block calls on a landline: a glossary of carrier features and plug-in devices](https://landlinehiddenfilter.com/block-calls-on-a-landline-carrier-and-plug-in): A plain-English glossary of landline call blocking: carrier block lists, plug-in blockers, handset buttons, star codes, spam filters and caller ID terms. - [Anonymous call rejection: what it does and how to turn it on](https://landlinehiddenfilter.com/anonymous-call-rejection-landline): Anonymous call rejection turns away callers who hide their number. How to turn it on with *77, how to test it, and which honest callers it can block. - [Landline vs VoIP home phone: which gets more spam?](https://landlinehiddenfilter.com/landline-vs-voip-home-phone-spam): Does a VoIP home phone get more spam than a landline? Steps to tell which line you have and which blocking tools to switch on for each. - [Why caller ID names look strange on a landline: ten myths and what really happens](https://landlinehiddenfilter.com/why-landline-caller-id-names-look-strange): Ten myths about landline caller ID names, from chopped capitals to city-and-state fallbacks, with what actually happens and why a name proves nothing. - [Landlines and the Do Not Call Registry: why it still rings](https://landlinehiddenfilter.com/landline-do-not-call-registry-still-ringing): Do Not Call cheat sheet for landlines: how to register, who is covered, the 31-day clock, what goes in a complaint and what still rings. - [Caller ID box vs built-in caller ID on a landline: a buyer's checklist](https://landlinehiddenfilter.com/caller-id-box-vs-built-in-caller-id-landline): A checklist for choosing between a separate caller ID box and a handset with a built-in screen on a landline: what to check, setup, and what blank screens mean. - [Cordless phones and call-block buttons: what the feature does and the wording that goes with it](https://landlinehiddenfilter.com/cordless-phone-call-block-button-explained): What a cordless phone's call-block button does, with ready-to-use wording for family, callers, the maker and your carrier, and where the feature falls short. - [Answering machine and voicemail settings that put off bad callers: four sample calls](https://landlinehiddenfilter.com/answering-machine-voicemail-settings-for-unwanted-calls): Four invented sample calls show how ring counts, greetings and screening on an answering machine or voicemail put off robocalls and scams on a home phone. - [Moving from a copper landline to VoIP: what happens to your number and your blocking](https://landlinehiddenfilter.com/moving-from-copper-landline-to-voip-number-and-blocking): A walk-through of switching a home phone from copper to VoIP, told as an invented example: porting your number, lost blocking settings and what to test. - [How to ask your phone company what robocall protection it offers on your line](https://landlinehiddenfilter.com/ask-phone-company-robocall-protection-landline): A decision flow for asking your phone company about call blocking, spam labels and anonymous call rejection on a home line, and what to do with each answer. ## Tools and data - [Check a number's area code](https://landlinehiddenfilter.com/check-a-number-area-code): Type a US or Canadian number to see its area code region, main towns, time zone and warning signs. It does not name the owner, carrier or line type. ## About - [Quieter calls on the phone you already have](https://landlinehiddenfilter.com/): Plain answers about home phones: how to block calls on a landline, what caller ID names mean, and what the Do Not Call Registry does. Free area code reader. - [About HomeLine Guard](https://landlinehiddenfilter.com/about-homeline-guard): HomeLine Guard is an independent site about landlines, home phone call blocking and caller ID. Who runs it, how facts are checked, how to report an error. - [June Aldous](https://landlinehiddenfilter.com/about-june-aldous): June Aldous writes and fact-checks every guide on HomeLine Guard. How she works, what she checks and how to send her a correction. - [Write to HomeLine Guard](https://landlinehiddenfilter.com/write-to-homeline-guard): Send a correction, a question or a guide idea to the editor of HomeLine Guard. What to include, how fast we reply and what we cannot help with. - [Privacy policy](https://landlinehiddenfilter.com/privacy-policy-homeline-guard): What HomeLine Guard collects: no accounts, no cookies, no analytics. Server logs kept about a week, contact messages kept up to twelve months. - [Terms of use](https://landlinehiddenfilter.com/terms-of-use-homeline-guard): The rules for using HomeLine Guard: informational purposes only, no harassment or tracking, no warranty on accuracy, and limits on liability. - [Disclaimer](https://landlinehiddenfilter.com/disclaimer-and-do-not-sell): HomeLine Guard offers general information, not legal advice. Carrier features vary. We do not sell or share personal information (CCPA and CPRA).