pcre.org

Domduck has read pcre.org on 6 days across 5 sources, since 2 August 2026. The domain was registered in 2000. Its robots.txt blocks none of the 8 AI crawlers Domduck tracks.

Last checked .

Charts appear once there are seven days of readings.

AI crawler policypcre.org
0/8AI crawlers
blocked
Blocked 0.0%Allowed by name 0.0%Not named 100.0%
Read from this domain’s own robots.txt, parsed to RFC 9309.
Popularity rank#4,763Tranco
Age25yName.com, Inc.
Certificate88dLet's Encrypt
AI crawlers0/8none blocked
Record6dsince 2026-08-02

What changed

6 days of readings
  1. 29 September 2026 (2026-09-29)
    • The catch-all Disallow was removed between 15 September 2026 and 29 September 2026.
    • robots.txt started returning HTTP 202 between 15 September 2026 and 29 September 2026, from 304.
    • The certificate was renewed between 15 September 2026 and 29 September 2026 and is valid to 26 December 2026.
  2. 17 August 2026 (2026-08-17)
    • robots.txt started returning HTTP 304 between 3 August 2026 and 17 August 2026, from 200.

Popularity rank

72 days, lower is better
pcre.org popularity rank#4,763 today
2026-08-024,763 – 4,7632026-10-12
The axis is flipped, so a rise on this chart is a rise in the list.

Position in the Tranco list, a research ranking of the million most popular domains averaged over thirty days so a single day’s traffic spike cannot move it.

AI crawler policy

No llms.txt
Blocked 0.0%Allowed by name 0.0%Not named 100.0%
GPTBotOpenAI
Not named

No ChatGPT browsing or training

OAI-SearchBotOpenAI
Not named

No ChatGPT search surface

ClaudeBotAnthropic
Not named

No Claude retrieval

PerplexityBotPerplexity
Not named

No Perplexity citation

Google-ExtendedGoogle
Not named

Out of Gemini and AI Overviews grounding, Search ranking unaffected

Applebot-ExtendedApple
Not named

Out of Apple Intelligence training

CCBotCommon Crawl
Not named

Out of most open training corpora

BytespiderByteDance
Not named

Out of TikTok and Doubao

Read from pcre.org/robots.txt. “Not named” means the file says nothing about that agent, which is not the same as allowing it: a catch-all rule added later blocks it without anyone deciding to.

What the domain itself says

read directly, not from a vendor
Certificate88d left
Issuer
Let's Encrypt
Valid
Yes
Expires
2026-12-26
Protocol
TLSv1.3
Names covered
2
DNS
A records
1
AAAA records
0
Mail exchangers
3
Nameservers
ns1.siteground.net, ns2.siteground.net
DMARC policy
none
Registration25 years old
Registered
2000-08-23
Registrar
Name.com, Inc.
Registry status
client transfer prohibited, renew period

How pcre.org compares to other .org domains

This domainpcre.org
0of 8 crawlers blocked
Median .org540 domains
0of 8 crawlers blocked

Questions

Does pcre.org block GPTBot?
No. pcre.org's robots.txt does not disallow GPTBot, though it does not name the agent either.
Does pcre.org publish an llms.txt file?
No. Domduck found no llms.txt at pcre.org.
When was pcre.org registered?
23 August 2000, through Name.com, Inc..
Who issues pcre.org's certificate?
Let's Encrypt.

How this page is made

Every number on this page is a measurement Domduck took itself or read from a public source, on a stated date. Nothing here is written by a language model. Where a value has not changed, no sentence is generated about it.

What the collectors have read · Request removal

First reading . 5 sources, 6 days with at least one reading. The popularity rank comes from the Tranco list; the registration record from RDAP, which ICANN requires registries to publish. The certificate, the DNS records and the crawler policy are read by Domduck directly from pcre.org.