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Free IP blacklist checker (DNSBL/RBL) with CIDR and /24 support

https://networkwhois.com/ip-blacklist-checker
3•sysnestor•1h ago

Comments

sysnestor•1h ago
Hi HN, I built this tool to quickly diagnose email deliverability issues caused by DNSBL/RBL listings. It checks a single IP, CIDR, or a small range (up to 256 IPs) and shows exactly which lists flagged the IPs, plus practical guidance on what to fix before delisting. I’d love feedback.

OpenAI to test ads in ChatGPT as it burns through billions

https://arstechnica.com/information-technology/2026/01/openai-to-test-ads-in-chatgpt-as-it-burns-...
1•coloneltcb•2m ago•0 comments

Agam Space – Self-hosted, zero-knowledge, end-to-end encrypted file storage

https://github.com/agam-space/agam-space
1•rameshl•3m ago•1 comments

Judge orders Anna's Archive to delete scraped data; no one thinks it will comply

https://arstechnica.com/tech-policy/2026/01/judge-orders-annas-archive-to-delete-scraped-data-no-...
1•vo2maxer•3m ago•0 comments

Adobe Photoshop 2025 Installer Now Working on Linux with Patched Wine

https://www.phoronix.com/news/Adobe-Photoshop-2025-Wine-Patch
1•speckx•4m ago•0 comments

Casey Muratori breaks down the AWS outage

https://www.youtube.com/watch?v=gstn9qcNdlc
1•marc_omorain•8m ago•0 comments

Down with the BRT, long live the Bus

https://marcochitti.substack.com/p/down-with-the-brt-long-live-the-bus
1•decimalenough•11m ago•0 comments

The Death of Software 2.0 (A Better Analogy)

https://www.fabricatedknowledge.com/p/the-death-of-software-20-a-better
1•achierius•11m ago•0 comments

How to open a file in Emacs

https://www.murilopereira.com/how-to-open-a-file-in-emacs
1•lr0•15m ago•0 comments

The cardinal sin of software architecture

https://functional.computer/blog/the-cardinal-sin-of-software-architecture
1•speckx•18m ago•0 comments

I set all 376 Vim options and I'm still a fool

https://evanhahn.com/i-set-all-376-vim-options-and-im-still-a-fool/
2•todsacerdoti•18m ago•0 comments

Diosdado Banatao, Chip Designer, Investor and Entrepreneur, Dies at 79

https://www.wsj.com/wsjplus/dashboard/articles/diosdado-bantao-chip-designer-dead-79-f205c32b
1•melling•18m ago•1 comments

Ask HN: Which system would you trust to run a business you can't afford to lose?

1•cutterlayers•19m ago•0 comments

Closing the Door on Net-NTLMv1: Releasing Rainbow Tables

https://cloud.google.com/blog/topics/threat-intelligence/net-ntlmv1-deprecation-rainbow-tables
1•linolevan•24m ago•1 comments

Technology and Wealth: The Straw, the Siphon, and the Sieve [video]

https://www.youtube.com/watch?v=OxvRx7sQNxc
1•measurablefunc•27m ago•0 comments

We're more patient with AI than one another

https://www.uxtopian.com/journal/were-more-patient-with-ai-than-one-another
2•lucidplot•27m ago•0 comments

Stop Pulling Yourself Down

https://buanasalf.com/blog/stop-pulling-yourself-down/
1•moh20•27m ago•0 comments

Human code review is a crutch

https://deadneurons.substack.com/p/human-code-review-is-an-outdated
1•nr378•27m ago•0 comments

Kusto Query Language

https://github.com/microsoft/Kusto-Query-Language
1•tosh•27m ago•0 comments

Show HN: I made a phone in between a smartphone and dumbphone

https://bouchardindustries.com
1•bouchardio•28m ago•1 comments

Fast Concordance: Instant concordance on a corpus of >1,200 books

https://iafisher.com/concordance/
1•evakhoury•29m ago•0 comments

Microsoft killing tech debt with agents [audio]

https://podcasts.apple.com/us/podcast/microsoft-killing-tech-debt-with-agents/id1621165150?i=1000...
1•azhenley•29m ago•0 comments

Demystifying Evals for AI Agents

https://www.anthropic.com/engineering/demystifying-evals-for-ai-agents
2•theptip•30m ago•0 comments

Claude Code Scheduler

https://github.com/jshchnz/claude-code-scheduler
1•jshchnz•30m ago•0 comments

OpenAI Introduces Ads to ChatGPT

https://twitter.com/sama/status/2012253252771824074
3•strzalek•30m ago•3 comments

DuckDB's CSV Reader and the Pollock Robustness Benchmark

https://duckdb.org/2025/04/16/duckdb-csv-pollock-benchmark
1•tosh•30m ago•0 comments

Low-Tech

https://en.wikipedia.org/wiki/Low_technology
1•tux•31m ago•0 comments

Fastmail Is Down

https://fastmailstatus.com
2•safe_duck7727•36m ago•3 comments

Billionaires demand more babies but make parenthood unaffordable

https://www.aljazeera.com/opinions/2026/1/16/billionaires-demand-more-babies-but-make-parenthood-...
3•Qem•37m ago•0 comments

How children lost the right to roam in four generations

https://www.dailymail.co.uk/news/article-462091/How-children-lost-right-roam-generations.html
2•mhb•38m ago•0 comments

Ammobia says it has reinvented a century-old technology

https://techcrunch.com/2026/01/13/ammobia-says-it-has-reinvented-a-century-old-technology/
1•rmason•39m ago•1 comments