DNS per ogni occasione

Il DNS (Domain Name System) è uno degli aspetti meno capiti della navigazione su Internet, e visto che più o meno tutti prima o poi hanno problemi con i DNS, i server POP3 o SMTP, ecco una serie di informazioni utili su DNS, indirizzi IP, server POP3 e SMTP. Vedere anche questo articolo.

Una tabella di DNS dei più noti provider italiani:

Alcuni indirizzi di DNS utili
TIN
195.14.96.135
212.216.172.222
212.216.172.162
194.243.154.51212.216.172.62212.131.30.42
212.216.112.112
195.31.190.31
194.243.154.62
Interbusiness
151.99.125.1
151.99.125.3
151.99.125.2
151.99.250.2
Infostrada
193.70.192.100
195.210.91.100
193.70.192.25
193.70.152.25
Wind
212.245.255.2
212.245.158.66
212.141.53.123
212.245.158.66
Atlanet
213.234.128.211
213.234.132.130
151.92.2.35
213.199.1.132
McLink
195.110.128.1
Flashnet
194.247.160.1
194.247.160.8
Albacom
212.17.192.209
I.Net
194.20.8.1
194.20.8.4
Elitel
212.34.224.193
212.34.224.132
217.146.65.7
217.146.65.80
Tiscali
195.130.224.18
195.130.225.129
Jumpy
212.17.192.216
212.17.192.56
Google
8.8.8.8
8.8.4.4
FoolDNS
87.118.111.215
81.174.67.134

Un’altra tabella, stavolta di server POP3 e SMTP:

ISP DOMINIO POP3 SMTP
Alice adsl @alice.it in.aliceposta.it out.aliceposta.it
Alice clubnet @aliceposta.it box.tin.it mail.tin.it
Aruba
@tuodominio pop3.aruba.it
smtp.aruba.it
Blu @blu.it popmail.blu.it mail.blu.it
Email.it @Email.it popmail.email.it smtp.email.it
Fastweb @fastwebnet.it pop.fastwebnet.it smtp.fastwebnet.it
Inwind @inwind.it popmail.inwind.it mail.inwind.it
Internetlibero @internetlibero.it mail.internetlibero.it smtp.internetlibero.it
Iol @iol.it popmail.iol.it mail.iol.it
Jumpy @jumpy.it pop.jumpy.it mail.jumpy.it
Kataweb.it @kataweb.it pop.katamail.com smtp.katamail.com
Libero @libero.it popmail.libero.it mail.libero.it
Lycos @lycos.it pop.lycos.it smtp.lycos.it
Mclink
@mclink.it
mail.mclink.it mail.mclink.it
Poste.it @poste.it relay.poste.it
relay.poste.it
Supereva @supereva.it mail.supereva.it mail.supereva.it
Tiscali @tiscali.it pop.tiscali.it smtp.tiscali.it
Tin @tin.it pop.tin.it smtp.tin.it
Virgilio @virgilio.it in.virgilio.it out.virgilio.it
Yahoo.it @yahoo.it pop.mail.yahoo.it smtp.mail.yahoo.it
Yahoo.com @yahoo.com pop.mail.yahoo.com smtp.mail.yahoo.com

Altri server DNS

TIN Flashnet
dns1.village.tin.it 195.14.96.135 dns.flashnet.it 194.247.160.1
dnsca2.tin.it 212.216.172.222 dns2.flashnet.it 194.247.160.8
dnscache2.tin.it 212.216.172.162 Elitel
dns2.tin.it 194.243.154.51 elitel.it 212.34.224.193
dnscache1.tin.it 212.216.172.62 ns.elitel.it 212.34.224.132
dnsca.tin.it 212.216.112.112 ns2.elitel.it 217.146.65.7
dnsca.tin.it 195.31.190.31 ns3.elitel.it 217.146.65.80
dns.tin.it 194.243.154.62 Tiscali
212.48.4.15 ns.tiscali.it 195.130.224.18
Interbusiness sns.tiscali.it 195.130.225.129
r-dns.interbusiness.it 151.99.125.1 213.305.32.70
dns2.interbusiness.it 151.99.125.3 213.205.36.70
dns.interbusiness.it 151.99.125.2 Atlanet
server-b.cs.interbusiness.it 151.99.250.2 ns1.atlanet.it 213.234.128.211
Libero ns2.atlanet.it 213.234.132.130
ns2.libero.it 193.70.192.100 ns1.its.it 151.92.2.35
ns1.libero.it 195.210.91.100 ns.telexis.it 213.199.1.132
cns-a.libero.it 193.70.192.25 McLink
cns-b.libero.it 193.70.152.25 dns.mclink.it 195.110.128.1
Fastweb Wind
213.140.2.12 dns.wind.it 212.245.255.2
213.140.2.21 dns2.wind.it 212.245.158.66
213.140.2.43 dns.inwind.it 212.141.53.123
213.140.2.49 dns2.wind.it 212.245.158.66
Opendns Caltanet
208.67.222.222 192.106.1.1
208.67.220.220 195.210.91.104
Eutelia Interbusiness
62.94.0.1 151.99.250.2
62.94.0.2 151.99.125.2
DNS pubblici Urano
dns.nic.it 193.205.245.5 194.20.8.1
dns2.nic.it 193.205.245.8 194.20.8.4
nameserver.cnr.it 194.119.192.34

una lista di DNS non censurati

dns2.de.net – 194.246.96.49
(Frankfurt, Germany)
ns1.de.eu.orsn.net – 217.146.139.5
(Hildesheim, Germany)
resolver.netteam.de – 193.155.207.61
(Alfter-Impekoven, Germany)
sunic.sunet.se – 192.36.125.2
(Stockholm, Sweden)
master.ns.dns.be – 193.109.126.140
(Leuven, Belgium)
ns1.lu.eu.orsn.net – 195.206.104.98
(Belvaux, Luxembourg)
merapi.switch.ch – 130.59.211.10
(Zurich, Switzerland)
prades.cesca.es – 192.94.163.152
(Barcelona, Spain)
michael.vatican.va – 212.77.0.2
(Vatican City, Italy)
dns.inria.fr – 193.51.208.13
(Nice, France)
ns0.ja.net – 128.86.1.20
(London, UK)
nic.aix.gr – 195.130.89.210
(Athens, Greece)
ns.ati.tn – 193.95.66.10
(Tunis, Tunisia)
ns1.relcom.ru – 193.125.152.3
(Moscow, Russia)
trantor.umd.edu – 128.8.10.14
(College Park, MD, USA)
ns1.berkeley.edu – 128.32.136.9
(Berkeley, CA, USA)
merle.cira.ca – 64.26.149.98
(Ottawa, Canada)
ns2.dns.br – 200.19.119.99
(Sao Paulo, Brasil)
ns2.gisc.cl – 200.10.237.14
(Santiago, Chile)
ns.uvg.edu.gt – 168.234.68.2
(Guatemala, Guatemala)
ns1.retina.ar – 200.10.202.3
(Buenos Aires, Argentina)
ns.unam.mx – 132.248.253.1
(Mexico City, Mexico)
ns.wide.ad.jp – 203.178.136.63
(Osaka, Japan)
ns.twnic.net – 192.83.166.11
(Taipei, Taiwan)
ns3.dns.net.nz – 203.97.8.250
(Wellington, New Zealand)
box2.aunic.net – 203.202.150.20
(Melbourne, Australia)

un po’ di DNS USA:

nsphil.bellatlantic.net
IP address: 151.197.0.38
home4.bellatlantic.net
IP address: 151.197.0.39
nyc1-qwest.bellatlantic.net
IP address: 151.202.0.84
nyc2-qwest.bellatlantic.net
IP address: 151.202.0.85
nyc1-gtei.bellatlantic.net
IP address: 141.155.0.84
nyc2-gtei.bellatlantic.net
IP address: 141.155.0.85
boston1-qwest.bellatlantic.net
IP address: 151.203.0.84
boston2-qwest.bellatlantic.net
IP address: 151.203.0.85
boston1-gtei.bellatlantic.net
IP address: 141.154.0.84
boston2-gtei.bellatlantic.net
IP address: 141.154.0.85
ns.bellatlantic.net
IP address: 199.45.32.37
ns1.bellatlantic.net
IP address: 199.45.32.40
ns2.bellatlantic.net
IP address: 151.202.0.85
vzdns01.verizon.com
IP address: 192.76.85.133
dnsauth1.sys.gtei.net
IP address: 4.2.49.2
dnsauth2.sys.gtei.net
IP address: 4.2.49.3
dnsauth3.sys.gtei.net
IP address: 4.2.49.4
dnspri.sys.gtei.net
IP address: 4.2.35.8
ns1.qwest.net
IP address: 216.111.65.217
ns2.qwest.net
IP address: 205.171.16.250
ns3.qwest.net
IP address: 63.226.138.15
SVL-ANS-01.INET.qwest.net
IP address: 205.171.14.195
DCA-ANS-01.INET.qwest.net
IP address: 205.171.9.242
Verizon server 4.2.2.1
Default Server: vnsc-pri.sys.gtei.net
Address: 4.2.2.1
Verizon server 4.2.2.2
Default Server: vnsc-bak.sys.gtei.net
Address: 4.2.2.2
Verizon server 4.2.2.3
Default Server: vnsc-lc.sys.gtei.net
Address: 4.2.2.3
nsdc.bellatlantic.net
IP address: 199.45.32.38
Official name: home1.bellatlantic.net
IP address: 199.45.32.43

Interessante infine un servizio gratuito chiamato Tunlr, che crea una VPN al volo ri-imbustando i pacchetti che figurano arrivare dagli USA, consentendo così l’accesso a servizi region-blocked:

Gli indirizzi IP del DNS di Tunlr sono:

142.54.177.158

e

198.147.22.212

Visitando questo indirizzo si può testare se il servizio è attivo.