Re: Curiositat sobre les IP assignades pels proveïdors

[Pere Nubiola Radigales <pere@nubiola.cat>]

Per curiositat he fet un whois de la adreça 100.76.0.1. Aquest es el resultat

perico@portatil:~$ whois 100.76.0.1

#
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# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
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# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
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NetRange:       100.64.0.0 - 100.127.255.255
CIDR:           100.64.0.0/10
NetName:        SHARED-ADDRESS-SPACE-RFCTBD-IANA-RESERVED
NetHandle:      NET-100-64-0-0-1
Parent:         NET100 (NET-100-0-0-0-0)
NetType:        IANA Special Use
OriginAS:      
Organization:   Internet Assigned Numbers Authority (IANA)
RegDate:        2012-03-13
Updated:        2016-04-11
Comment:        This block is used as Shared Address Space. Traffic from these addresses does not come from IANA. IANA has simply reserved these numbers in its database and does not use or operate them. We are not the source of activity you may see on logs or in e-mail records. Please refer to http://www.iana.org/abuse/
Comment:       
Comment:        Shared Address Space can only be used in Service Provider networks or on routing equipment that is able to do address translation across router interfaces when addresses are identical on two different interfaces.
Comment:       
Comment:        This block was assigned by the IETF in the Best Current Practice document,
Comment:        RFC 6598 which can be found at:
Comment:        http://tools.ietf.org/html/rfc6598
Ref:            https://rdap.arin.net/registry/ip/100.64.0.0



OrgName:        Internet Assigned Numbers Authority
OrgId:          IANA
Address:        12025 Waterfront Drive
Address:        Suite 300
City:           Los Angeles
StateProv:      CA
PostalCode:     90292
Country:        US
RegDate:       
Updated:        2012-08-31
Ref:            https://rdap.arin.net/registry/entity/IANA


OrgAbuseHandle: IANA-IP-ARIN
OrgAbuseName:   ICANN
OrgAbusePhone:  +1-310-301-5820
OrgAbuseEmail:  abuse@iana.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/IANA-IP-ARIN

OrgTechHandle: IANA-IP-ARIN
OrgTechName:   ICANN
OrgTechPhone:  +1-310-301-5820
OrgTechEmail:  abuse@iana.org
OrgTechRef:    https://rdap.arin.net/registry/entity/IANA-IP-ARIN

Pere Nubiola Radigales
Telf: +34 656316974
e-mail: pere@nubiola.cat
           pnubiola@fsfe.org
           pere.nubiola@gmail.com

El dia 27 d’agost de 2018 a les 14:04, Pedro <pederindi@gmail.com> ha escrit:

> Però com que no em funcionava m'hi he barallat una estona i al final
> acabo deduint que el proveïdor d'internet utilitza una xarxa privada
> interna (una classe B, suposo, amb adreces de l'interval
> 100.76.xxx.yyy). I surt a internet amb unes quantes adreces públiques
> compartides entre diversos usuaris.

Els prefixos de xarxa privada són:

     10.0.0.0        -   10.255.255.255  (10/8 prefix)
     172.16.0.0      -   172.31.255.255  (172.16/12 prefix)
     192.168.0.0     -   192.168.255.255 (192.168/16 prefix)

https://tools.ietf.org/html/rfc1918


podria ser que el proveïdor bloqueja port 22, per què no proves un altre?

fora bo que ens diguis de quin proveïdor es tracta i així ens animarem
a posar-lo en les nostres whitelists o blacklists personals