id
processing priority
4
site type
3 (personal blog or private political site, e.g. Blogspot, Substack, also small blogs on own domains)
review version
11
html import
20 (imported)
first seen date
2024-10-15 21:17:38
expired found date
-
created at
2024-10-15 21:17:38
updated at
2025-04-23 21:52:00
length
27
crc
7784
tld
2211
nm parts
0
nm random digits
0
nm rare letters
0
is subdomain of id
69893241 (blogspot.com)
previous id
0
replaced with id
0
related id
-
dns primary id
0
dns alternative id
0
lifecycle status
0 (unclassified, or currently active)
deleted subdomains
0
page imported products
0
page imported random
0
page imported parking
0
count skipped due to recent timeouts on the same server IP
0
count content received but rejected due to 11-799
0
count dns errors
0
count cert errors
0
count timeouts
0
count http 429
0
count http 404
0
count http 403
0
count http 5xx
0
next operation date
-
server bits
—
server ip
-
mp import status
20
mp rejected date
-
mp saved date
-
mp size orig
123550
mp size raw text
19040
mp inner links count
0
mp inner links status
1 (no links)
title
mathrecreation
description
A blog on interesting topics in recreational mathematics, including useful resources for math teachers, students, and enthusiasts.
image
site name
author
updated
2026-01-19 15:30:40
raw text
mathrecreation mathrecreation home polynomial division puzzles themes about Wednesday, June 9, 2021 origami envelopes and letterfolds A while ago, I posted an exploration of the origami envelope featured on Origami USA's free diagram page that showed that the central rectangle formed in the crease pattern that contributes to the front (or back) of the completed envelope is 1/4 the area of the original paper (see here for that ). Jose Ignacio Royo Prieto ( http://www.ehu.eus/joseroyo/ ), a mathematician with an interest in origami, recently provided me with a much nicer argument that allows you to directly see this area relationship while folding or holding the envelope in your hands. As Jose explains: I very much prefer to argue by counting the layers of the final model: there are four of them in every point of the envelope (this homogeneity is remarkable), save in the two pocket-triangles, containing six layers. But the pocket-triangles are double the siz...
redirect type
0 (-)
block type
0 (no issues)
detected language
1 (English)
category id
Other [en] (231)
index version
2025123101
spam phrases
0
text nonlatin
0
text cyrillic
0
text characters
14694
text words
3295
text unique words
743
text lines
255
text sentences
116
text paragraphs
50
text words per sentence
28
text matched phrases
2
text matched dictionaries
3
links self subdomains
0
links other subdomains
4 - books.google.ca
links other domains
165 - mathrecreation.com, origamiusa.org, ehu.eus, letterlocking.org, orihouse.com, barnquilttrails.ca, desmos.com
links spam adult
0
links spam random
0
links spam expired
0
links ext activities
0
links ext ecommerce
0
links ext finance
0
links ext crypto
0
links ext booking
0
links ext news
1
links ext leaks
0
links ext ugc
79 - blogger.com, 1.bp.blogspot.com, youtube.com, 2.bp.blogspot.com, 4.bp.blogspot.com, en.wikipedia.org, 3.bp.blogspot.com, mathrecpics.tumblr.com, mathrec-links.tumblr.com, twitter.com
links ext klim
0
links ext generic
1
dol status
0
dol updated
2026-01-19 15:30:40
rss status
32 (unknown)
rss found date
2024-10-15 21:17:42
rss size orig
642764
rss items
25
rss spam phrases
0
rss detected language
1 (English)
inbefore feed id
-
inbefore status
0 (new)
sitemap path
sitemap status
30 (processing completed, results pushed to table crawler_sitemaps.ext_domain_sitemap_lists)
sitemap review version
1
sitemap urls count
292
sitemap urls adult
0
sitemap filtered products
0
sitemap filtered videos
0
sitemap found date
2024-10-15 21:17:39
sitemap process date
2024-10-15 21:17:39
sitemap first import date
-
sitemap last import date
-