.htaccess 301重定向不适用于某些用户

I moved an old website to a new domain. Therefore i made a 301 redirect for a every page of the old website to the corresponding page of the new website to preserve pagerank and SEO. Everything works. I also made the old website still visible for our IP address, which is 91.187.222.26, because we want to access the old website to save all texts, pictures and stuff.

Today we got some calls of customers (outside our buildings) who can still see the old website. How can this be possible? I checked with many different IPs (proxy, 3G, home, office, other countries) and they all properly redirect.

Here is the .htaccess file put in autodromodifranciacorta.com root:

#autodromodifranciacorta.com

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /


#ALL THE PAGES REDIRECTED
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^autodromo-la-struttura/$ http://franciacortacircuit.com/strutture/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^autodromo-la-struttura/la-struttura/$ http://franciacortacircuit.com/strutture/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^autodromo-la-struttura/modulistica-generale/$ http://franciacortacircuit.com/modulistica-e-regolamenti/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^autodromo-la-struttura/partner-sponsor/$ http://franciacortacircuit.com/partners/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^circuito-auto/$ http://franciacortacircuit.com/strutture/pista-asfaltata/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^circuito-auto/la-pista/$ http://franciacortacircuit.com/strutture/pista-asfaltata/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^circuito-auto/prove-libere-auto/$ http://franciacortacircuit.com/prove-libere/prove-libere-auto-racing/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^circuito-auto/prove-libere-moto/$ http://franciacortacircuit.com/prove-libere/prove-libere-moto/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^circuito-auto/info-e-costi/$ http://franciacortacircuit.com/listino-prezzi/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/$ http://franciacortacircuit.com/corsi/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/corsi-in-pista/$ http://franciacortacircuit.com/corsi/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/guida-sicura/$ http://franciacortacircuit.com/corsi/corsi-di-guida-sicura-aci/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/guida-sicura/guida-sicura-auto/guida-sicura-auto-base/$ http://franciacortacircuit.com/corsi/corsi-di-guida-sicura-aci/corsi-di-guida-sicura-aci-base/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/guida-sicura/guida-sicura-auto/guida-sicura-auto-avanzato/$ http://franciacortacircuit.com/corsi/corsi-di-guida-sicura-aci/corsi-di-guida-sicura-aci-avanzato/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/guida-sicura/guida-sicura-auto/guida-sicura-auto-difensiva/$ http://franciacortacircuit.com/corsi/corsi-di-guida-sicura-aci/corsi-di-guida-sicura-auto-difensiva/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/guida-sicura/guida-sicura-auto/guida-sicura-auto-safe-fun/$ http://franciacortacircuit.com/corsi/corsi-di-guida-sicura-aci/corso-di-guida-safe-fun/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/guida-sicura/mezzi-pesanti-motrici-e-bilici/$ http://franciacortacircuit.com/corsi/corsi-di-guida-sicura-aci/corsi-di-guida-sicura-mezzi-pesanti/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/corsi-in-pista/corsi-auto/$ http://franciacortacircuit.com/corsi/corsi-di-guida-sportiva-pista/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/corsi-in-pista/moto/$ http://franciacortacircuit.com/corsi/riding-school-di-luca-pedersoli/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/fuori-strada/$ http://franciacortacircuit.com/corsi/corsi-di-guida-off-road/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/corsi-in-pista/moto/$ http://franciacortacircuit.com/corsi/riding-school-di-luca-pedersoli/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^corsi/modulistica-corsi/$ http://franciacortacircuit.com/corsi/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^calendario/$ http://franciacortacircuit.com/calendario/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/calendario/prove-libere-moto/$ http://franciacortacircuit.com/calendario/prove-libere-moto/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/calendario/prove-libere-auto/$ http://franciacortacircuit.com/calendario/prove-libere-auto-racing/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/calendario/racing-gare/$ http://franciacortacircuit.com/calendario/gare-moto/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/calendario/guida-sicura/$ http://franciacortacircuit.com/calendario/corsi-di-guida-sicura-aci-calendario/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/calendario/ospitalita/$ http://franciacortacircuit.com/calendario/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/calendario/drive-accademy/$ http://franciacortacircuit.com/calendario/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/calendario/$ http://franciacortacircuit.com/calendario/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/archivio-news/$ http://franciacortacircuit.com/news/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/archivio-news/drive-academy-news/$ http://franciacortacircuit.com/news/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/archivio-news/guida-sicura-news/$ http://franciacortacircuit.com/news/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/archivio-news/ospitalita-news/$ http://franciacortacircuit.com/news/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/archivio-news/prove-libere-auto-e-moto-news/$ http://franciacortacircuit.com/news/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^category/archivio-news/racing-gare-news/$ http://franciacortacircuit.com/news/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^galleria-video/$ http://franciacortacircuit.com/foto-e-video/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^photogallery/$ http://franciacortacircuit.com/foto-e-video/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^info/$ http://franciacortacircuit.com/contatti/ [R=301,L]
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteRule ^info/dove-siamo/$ http://franciacortacircuit.com/contatti/ [R=301,L]

#REDIRECT EVERYTHING ELSE
RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteCond %{HTTP_HOST} ^en.autodromodifranciacorta.com$ [NC]
RewriteRule ^(.*)$ http://franciacortacircuit.com/ [R=301,L]

RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteCond %{HTTP_HOST} ^www.autodromodifranciacorta.com$ [NC]
RewriteRule ^(.*)$ http://franciacortacircuit.com/ [R=301,L]

RewriteCond %{REMOTE_ADDR} !^91\.187\.222\.26
RewriteCond %{HTTP_HOST} ^autodromodifranciacorta.com$ [NC]
RewriteRule ^(.*)$ http://franciacortacircuit.com/ [R=301,L]

#CONTROLLA CHE ANCHE en.autodromodifranciacorta.com redirezioni a franciacortacircuit.com



#WORDPRESS STUFF
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]


</IfModule>

# END WordPress

Here are some additional data:

  1. Old website: http://autodromodifranciacorta.com
  2. New website: http://franciacortacircuit.com/

HYPOTHESIS

Is it possible that all the people that can still see the old website have the same IP address that we have? Maybe they are in the same (small) city and have the same provider...