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Quad9
@quad9dns.bsky.social
9.9.9.9 Security, Privacy, Performance.

Support Requests: [email protected]

Quad9 Status: https://uptime.quad9.net
This #GivingTuesday, please consider making a donation to continue our work to sustain a public-benefit cybersecurity service that puts users first, not profit.

👉 quad9.net/donate/

#DNS #privacy #infosec #internetintegrity
December 2, 2025 at 11:28 AM
Urgent Call for EU Legislative Protection of Core Internet Security Infrastructure

A letter from our General Manager, Simon Forster.

quad9.net/news/blog/ur...

#DNS #internetfreedom #EU #infosec
November 27, 2025 at 2:53 PM
#GivingTuesday is only a week away! Join the global movement on December 2 and consider supporting the Quad9 mission to provide a safer and more robust internet for everyone.

A free and secure internet is a basic human right. 🫶

#internetfreedom #internetintegrity
November 25, 2025 at 3:25 PM
Quad9 welcomes global governance and digital infrastructure leader Sylvie LaPerrière to our governing board.

quad9.net/news/press/s...

#DNS #privacy #integrity
November 19, 2025 at 4:00 PM
Welcome to our first ever merch shop 🛒, starting with the classics that never go out of style!

We have more ideas in the queue for designs and products, so stay tuned!!

You can check it out here: quad9-shop.fourthwall.com

** Discount code QUAD9BDAY expires Dec 17th **

#quad9merch #dresstothe9s
November 18, 2025 at 12:55 PM
ISO Tier 2 or 3 Technical Support Engineer

👉 Who doesn't love heading into the weekend in anticipation of submitting your resume?!

See if this opportunity to work with a great team (i.e., us 😉) is the right fit for you!

Please share!

quad9.net/about/jobs/

#GetFediHired #infosec #hiring #TSE
October 31, 2025 at 11:44 AM
Lots of questions, the answers for which are not so simple...

"When Enforcing Copyright Starts Breaking the Internet’s Plumbing"

quad9.net/news/blog/wh...

#DNS #internetfreedom
October 30, 2025 at 12:54 PM
We have arrived! #NANOG95
October 28, 2025 at 12:24 PM
You run into the best kinda people at #RIPE91 😻

It was great to spend time with our friends and partners @[email protected] this week!
October 23, 2025 at 5:36 PM
The team has been traveling quite a bit lately! Next week on to #NANOG95. See you there!

P.S. love the boots! 🤠
October 23, 2025 at 1:57 PM
Join our Director of Operations @farrokhi.unix.family.ap.brid.gy at #RIPE91 🇷🇴 tomorrow to talk about ADoT/ADoQ: Deployment Collaboration.

ripe91.ripe.net/programme/me...

#DNS #infosec
October 22, 2025 at 5:09 PM
We love it when our partners and friends share their Quad9 collaboration stories!

Willem Toorop from @nlnetlabs.bsky.social at #RIPE91 🇷🇴

Who is "really" running email?
ripe91.ripe.net/programme/me...

#DNS #infosec
October 21, 2025 at 4:24 PM
#TLDR: Quad9 will be discontinuing support within DNS-over-HTTPS (DOH) using HTTP/1.1 on December 15, 2025.

Mark your calendar 🗓️ and please share, especially if you know someone who will be affected!

Full story here 👉 quad9.net/news/blog/do...

#DOH #DNS #infosec
October 14, 2025 at 12:51 PM
Spotted today at #OARC45 🇸🇪...

(hint 😉: @jhtodd.bsky.social)
October 8, 2025 at 1:01 PM
Fun fact for the day: Look what we can see real-time in just 10 seconds...newly observed domains.

And we've seen more than 408M just since January!

#infosec
September 11, 2025 at 1:47 PM
When you just can't decide if you're in the mood to be 6panb or quad9 today (zoom in 😍).

Enjoying #GlobalGathering2025 in Portugal this week! If you haven't come to see us, we're in Booth 16.

Remember, digital rights are human rights!

#DNS #privacy #integrity #digitalrights
September 10, 2025 at 2:47 PM
Toivotamme uuden jäsenen tervetulleeksi Quad9-yhteisöön! 🇫🇮

Quad9 ja CSC sopivat kumppanuudesta kyberturvallisuuden vahvistamiseksi Suomessa

quad9.net/news/press/q...

#DNS
August 20, 2025 at 1:06 PM
Some food for thought and weekend reading!

What happens when you interfere with the Internet's infrastructure? 🤔

quad9.net/news/blog/in...

#DNS #infosec #internet

cc: @internetsociety.bsky.social
August 15, 2025 at 12:31 PM
Our H1 2025 Cyber Insights is out and ready for consumption!

quad9.net/news/blog/tr...

#infosec #omnatuor #mailware #taidoor #phishing #DNS
July 24, 2025 at 3:03 PM
Something fun to peruse over the weekend...we've started a daily dose of the top 500 #DNS domains seen on the Quad9 recursive resolver on #GitHub.

We're excited, are you? github.com/Quad9DNS/qua...

Still #privacy preserving and shared to improve the #security and #integrity of Internet.

#infosec
July 11, 2025 at 2:43 PM
#DYK Quad9 has a quarterly newsletter? If you haven't already signed up, now's your chance! Q2 is out tomorrow!

www.quad9.net/news/#mc_emb...

#DNS #privacy
July 9, 2025 at 2:54 PM
NEW on the Quad9 blog 👉

Protecting Your #Crypto: How Quad9 Safeguards You from Crypto Exploits

quad9.net/news/blog/pr...

📣 And a shout out to our #threatintel partners who are a key part of what makes Quad9 unique! quad9.net/about/partne...

#DNS #privacy #infosec #WeAreStrongerTogether
June 26, 2025 at 1:27 PM
Day 2 at #IGF2025 in 🇳🇴
Quad9 is in the house!

#DNS #privacy #internetfreedom
June 24, 2025 at 1:59 PM
#KeNOG members and Quad9 CTO @jhtodd.bsky.social last night at an informal discussion about monitoring and telemetry. Thanks to #Angani for arranging and hosting the meeting!

Great way to wrap up a productive week in #Nairobi! 🇰🇪
June 20, 2025 at 3:30 PM
Quad9 and BforeAI Expand Strategic Partnership to Supercharge Preemptive Threat Intelligence

quad9.net/news/press/q...

#DNS #privacy #threatintel #infosec
June 11, 2025 at 1:12 PM