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rjlipton.com

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First seen 2026-04-12 · Last seen 2026-05-19 · ok HTTP/1.1 200 633 ms crawled 2026-05-02

US · 192.0.78.227 · AS2635 Automattic, Inc

Reputation 100/100

Classifying

HTML metadata

Title
Gödel's Lost Letter and P=NP | a personal view of the theory of computation
Description
a personal view of the theory of computation
Language
en-US
Feeds

Open Graph

url
https://rjlipton.com/
title
Gödel's Lost Letter and P=NP
locale
en_US
site name
Gödel's Lost Letter and P=NP
description
a personal view of the theory of computation

Technology

Server
nginx
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WordPress
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Third-party hosts loaded (16)
  • i0.wp.com×23
  • graph.facebook.com×10
  • secure.gravatar.com×7
  • s0.wp.com×5
  • stats.wp.com×2
  • 0.gravatar.com×1
  • 1.gravatar.com×1
  • 2.gravatar.com×1
  • c.statcounter.com×1
  • c0.wp.com×1
  • faq.files.wordpress.com×1
  • jetpack.wordpress.com×1
  • public-api.wordpress.com×1
  • sm6.sitemeter.com×1
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  • wp.me×1

Social

Registration

Registrar
Automattic Inc.
Created
2024-03-26
Expires
2027-03-26 310 days left
Updated
2026-03-06
Name servers
  • ns1.wordpress.com
  • ns2.wordpress.com
  • ns3.wordpress.com

DNS records live

NS
  • ns1.wordpress.com
  • ns2.wordpress.com
  • ns3.wordpress.com
TXT
  • v=spf1 include:_spf.wpcloud.com ~all

Certificate (current)

WR1
from 2026-04-09 to 2026-07-08
Expires in 49 days

Full certificate history on crt.sh ↗

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Linked from (2)