A "DNS database" is a database that stores DNS records, notably A-records, which IP a domains is hosted at.
For currently live domains, domain to IP can of course be easily determined on the fly by just resolving the domain like the browser does, e.g.
cirosantilli.comWhat is hard however is:
As of 2023, working with DNS data is just going through a mish-mash of closed datasets/expensive APIs.
We really need some open data in that area.
- opendata.stackexchange.com/questions/1951/dataset-of-domain-names
- opendata.stackexchange.com/questions/2110/domain-name-system-record-a-database
- webmasters.stackexchange.com/questions/33395/find-the-ip-address-of-expired-domains/142751#142751
- superuser.com/questions/686195/how-to-find-the-last-ip-used-for-an-expired-domain-name/1793224#1793224
Some links of interest:
- bushart.org/topic/ip
- archive.org/details/internet-mapping
- stackoverflow.com/questions/307553/possible-to-download-entire-whois-database-list-of-registered-domains (deleted question, see archives)
- www.reversedns.ch/en/ has some OK reverse IPs, but you have to do them one by one with CAPTCHA, and we were already past that point when that source was found, so nothing new was found on it yet
- iphistory.net/ announced at www.reddit.com/r/OSINT/comments/1bip8j7/iphistorynet_find_historic_ip_addresses_from/
Bibliography:
- www.reddit.com/r/OSINT/comments/1j8uasm/does_domaintools_offer_historical_reverse_ip_ie/ by Ciro Santilli
- www.reddit.com/r/OSINT/comments/ne27qi/really_historical_whois/
- www.reddit.com/r/dns/comments/1f4y0mg/any_onestopshop_type_sites_that_are_better_for/
- www.arin.net/reference/research/whowas/ you need to request access and they need to approve your usage. Bastards.
Sample term usage: jax-ml.github.io/scaling-book/roofline/
The hello world is with a potentiometer: extremes on GND and VCC pins of the Pi, and middle output on pin GIO26, then as you turn the knob, the uart value goes from about 0 to about 64k.
In Ciro's ASCII art circuit diagram notation:
RPI_PICO_W__gnd__gpio26Adc__3.3V@36
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P__1__2__3Under: micropython
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