AS number details


Acantho S.p.a  ·

AS21309 – Acantho S.p.a

Country Italy
Hosted domains 4,109
Number of IPs 61,440
ASN type ISP
Allocated 20 years ago on Jul 19, 2002

IP Address Ranges

Netblock Company Num of IPs Acantho S.p.a 1,024 Acantho S.p.a 256 Acantho S.p.a 256 AD Consulting S.P.A. 1,024 Acantho S.p.a 8,192 ACANTHO via Molino Rosso 8 Imola 4,096 ACANTHO via Molino Rosso 8 Imola 2,048 ACANTHO via Molino Rosso 8 Imola 2,048 Acantho S.p.a 4,096 Acantho S.p.a 2,048 Acantho S.p.a 2,048 Acantho S.p.a 16,384 Acantho S.p.a 8,192 Acantho S.p.a 4,096 Acantho S.p.a 4,096 Acantho S.p.a 8,192 Acantho, Via Molino Rosso,8 40026 Imola (BO) 4,096 Acantho, Via Molino Rosso,8 40026 Imola (BO) 4,096 Acantho S.p.a 2,048 Acantho S.p.a 16,384 Acantho S.p.a 8,192 Acantho S.p.a 4,096 Acantho S.p.a 4,096 Acantho S.p.a 8,192 Acantho S.p.a 4,096 Hyperlan Home customers 4,096 Acantho S.p.a 8,192 Acantho S.p.a 4,096 Comune di Modena 2,048 Acantho S.p.a 2,048 Acantho S.p.a 4,096 SATCOM SPA 2,048 Acantho S.p.a 2,048 Acantho S.p.a 8,192 Acantho S.p.a 4,096 Acantho S.p.a 2,048 Acantho S.p.a 2,048 HYPERLAN Northern Italy 4,096 HYPERLAN Northern Italy 2,048 HYPERLAN Northern Italy 2,048
Netblock Company
2a03:c380::/32 Acantho S.p.a
Get all this data and more in JSON format using our ASN API Read More

WHOIS Details

as-block:       AS21281 - AS21390
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2018-11-22T15:27:28Z
last-modified:  2018-11-22T15:27:28Z
source:         RIPE

aut-num:        AS21309
org:            ORG-AS22-RIPE
as-name:        CASAWEB-AS
descr:          Via Molino Rosso 8 IMOLA (BO) ITALY
remarks:        ---------------
remarks:        Upstreamers
remarks:        ---------------
import:         from AS3257 action pref=100; accept ANY
import:         from AS28716 action pref=100; accept ANY
import:         from AS174 action pref=100; accept ANY
import:         from AS3269 action pref=100; accept ANY
remarks:        ---------------
remarks:        Private Peers
remarks:        ---------------
import:         from AS31638 action pref=100; accept AS31638
remarks:        --------------
remarks:        Public Peers
remarks:        --------------
import:         from AS1267 action pref=100; accept AS-INFOSTRADA
import:         from AS3313 action pref=100; accept AS-INET
import:         from AS5392 action pref=100; accept AS-TELNET
import:         from AS5396 action pref=100; accept AS-MC-link
import:         from AS6730 action pref=100; accept AS-SUNRISE
import:         from AS6734 action pref=100; accept AS-SPIN
import:         from AS8224 action pref=100; accept AS-INTERCOM
import:         from AS8674 action pref=100; accept AS-NETNOD
import:         from AS8816 action pref=100; accept AS-IT-STCOM
import:         from AS9026 action pref=100; accept AS-ULI
import:         from AS9137 action pref=100; accept AS-UNO
import:         from AS12721 action pref=100; accept AS-LOMBARDIACOM
import:         from AS12779 action pref=100; accept AS-ITGATE
import:         from AS12850 action pref=100; accept AS-ENTER
import:         from AS12874 action pref=100; accept AS-FASTWEB
import:         from AS16004 action pref=100; accept AS-MIXITA
import:         from AS24915 action pref=100; accept AS-TELEUNIT
import:         from AS12637 action pref=100; accept AS-SEEWEB
import:         from AS9102 action pref=100; accept AS-PLEXIA
import:         from AS39912 action pref=100; accept AS-i3B
import:         from AS8234 action pref=100; accept AS-RAI
import:         from AS31034 action pref=100; accept AS-ARUBA
import:         from AS28929 action pref=100; accept AS-ASDASD
import:         from AS31034 action pref=100; accept AS-Aruba
import:         from AS34695 action pref=100; accept AS-E4A
import:         from AS44160 action pref=100; accept AS-Emmequadro
import:         from AS6760 action pref=100; accept AS-ITELSI
import:         from AS16276 action pref=100; accept AS-OVH
import:         from AS25525 action pref=100; accept AS-REASONNET
import:         from AS35574 action pref=100; accept AS-SED_LOTTOMATICA
import:         from AS15720 action pref=100; accept AS-POSTECOM
import:         from AS47217 action pref=100; accept AS-PLANETEL
import:         from AS21056 action pref=100; accept AS-WELCOMEITALIA
import:         from AS48634 action pref=100; accept AS-MEDIASET
import:         from AS47927 action pref=100; accept AS-WIFIWEB
import:         from AS8265 action pref=100; accept AS-FASTNET
import:         from AS16265 action pref=100; accept AS-LEASEWEB
import:         from AS12835 action pref=100; accept AS12835:AS-CUSTOMERS
import:         from AS5602 action pref=100; accept AS-KQIT
import:         from AS15469 action pref=100; accept AS-WARINET
import:         from AS15589 action pref=100; accept AS-EUTELIA
import:         from AS12399 action pref=100; accept AS-SPXS
import:         from AS8922 action pref=100; accept AS8922
import:         from AS2597 action pref=100; accept AS2597
import:         from AS20836 action pref=100; accept AS-CDLAN
import:         from AS44513 action pref=100; accept AS-OPTIMA
import:         from AS5394 action pref=100; accept AS-UNIDATACUST
import:         from AS24880 action pref=100; accept AS24880
import:         from AS30848 action pref=100; accept AS-TWTIT
import:         from AS49367 action pref=100; accept AS49367
import:         from AS15830 action pref=100; accept AS-TELECITYGROUP
import:         from AS47408 action pref=100; accept AS47408
import:         from AS51185 action pref=100; accept AS-MAINSOFT
import:         from AS48291 action pref=100; accept AS48291
import:         from AS9104 action pref=100; accept AS9104:AS-CUSTOMERS
import:         from AS15169 action pref=100; accept AS-GOOGLE
import:         from AS24608 action pref=100; accept AS24608
import:         from AS25152 action pref=100; accept RS-KROOT-MIX
import:         from AS41497 action pref=100; accept AS41497
import:         from AS42909 action pref=100; accept AS42909
import:         from AS20924 action pref=100; accept AS20924
import:         from AS8968 action pref=100; accept AS-ALBACOM
import:         from AS50316 action pref=100; accept AS-NETGLOBAL
import:         from AS197075 action pref=100; accept AS-ACTNET-GLOBAL
import:         from AS20940 action pref=100; accept AS-AKAMAI
remarks:        --------------
remarks:        Customers
remarks:        --------------
import:         from AS15923 action pref=100; accept AS-LOGOS
import:         from AS42933 action pref=100; accept AS-AEROPORTO-MARCONI-BO-IT
import:         from AS49535 action pref=100; accept AS-EMIND
import:         from AS197807 action pref=100; accept AS-EOS
import:         from AS8884 action pref=100; accept AS8884
remarks:        ---------------
remarks:        Upstreamers
remarks:        ---------------
export:         to AS3257 announce AS-ACANTHO
export:         to AS28716 announce AS-ACANTHO
export:         to AS174 announce AS-ACANTHO
export:         to AS3269 announce AS-ACANTHO
remarks:        ---------------
remarks:        Private Peers
remarks:        ---------------
export:         to AS31638 announce AS21309
remarks:        --------------
remarks:        Public Peers
remarks:        --------------
export:         to AS1267 announce AS-ACANTHO
export:         to AS3313 announce AS-ACANTHO
export:         to AS5392 announce AS-ACANTHO
export:         to AS5396 announce AS-ACANTHO
export:         to AS6730 announce AS-ACANTHO
export:         to AS6734 announce AS-ACANTHO
export:         to AS8224 announce AS-ACANTHO
export:         to AS8674 announce AS-ACANTHO
export:         to AS8816 announce AS-ACANTHO
export:         to AS9026 announce AS-ACANTHO
export:         to AS9137 announce AS-ACANTHO
export:         to AS12721 announce AS-ACANTHO
export:         to AS12779 announce AS-ACANTHO
export:         to AS12850 announce AS-ACANTHO
export:         to AS12874 announce AS-ACANTHO
export:         to AS16004 announce AS-ACANTHO
export:         to AS24915 announce AS-ACANTHO
export:         to AS12637 announce AS-ACANTHO
export:         to AS9102 announce AS-ACANTHO
export:         to AS39912 announce AS-ACANTHO
export:         to AS8234 announce AS-ACANTHO
export:         to AS31034 announce AS-ACANTHO
export:         to AS28929 announce AS-ACANTHO
export:         to AS31034 announce AS-ACANTHO
export:         to AS34695 announce AS-ACANTHO
export:         to AS44160 announce AS-ACANTHO
export:         to AS6760 announce AS-ACANTHO
export:         to AS16276 announce AS-ACANTHO
export:         to AS25525 announce AS-ACANTHO
export:         to AS35574 announce AS-ACANTHO
export:         to AS15720 announce AS-ACANTHO
export:         to AS47217 announce AS-ACANTHO
export:         to AS21056 announce AS-ACANTHO
export:         to AS48634 announce AS-ACANTHO
export:         to AS47927 announce AS-ACANTHO
export:         to AS8265 announce AS-ACANTHO
export:         to AS16265 announce AS-ACANTHO
export:         to AS12835 announce AS-ACANTHO
export:         to AS5602 announce AS-ACANTHO
export:         to AS15469 announce AS-ACANTHO
export:         to AS15589 announce AS-ACANTHO
export:         to AS12399 announce AS-ACANTHO
export:         to AS8922 announce AS-ACANTHO
export:         to AS2597 announce AS-ACANTHO
export:         to AS20836 announce AS-ACANTHO
export:         to AS44513 announce AS-ACANTHO
export:         to AS5394 announce AS-ACANTHO
export:         to AS24880 announce AS-ACANTHO
export:         to AS30848 announce AS-ACANTHO
export:         to AS49367 announce AS-ACANTHO
export:         to AS15830 announce AS-ACANTHO
export:         to AS47408 announce AS-ACANTHO
export:         to AS51185 announce AS-ACANTHO
export:         to AS48291 announce AS-ACANTHO
export:         to AS9104 announce AS-ACANTHO
export:         to AS15169 announce AS-ACANTHO
export:         to AS24608 announce AS-ACANTHO
export:         to AS25152 announce AS-ACANTHO
export:         to AS41497 announce AS-ACANTHO
export:         to AS42909 announce AS-ACANTHO
export:         to AS20924 announce AS-ACANTHO
export:         to AS8968 announce AS-ACANTHO
export:         to AS50316 announce AS-ACANTHO
export:         to AS197075 announce AS-ACANTHO
export:         to AS20940 announce AS-ACANTHO
remarks:        --------------
remarks:        Customers
remarks:        --------------
export:         to AS15923 announce ANY
export:         to AS42933 announce ANY
export:         to AS49535 announce ANY
export:         to AS197807 announce ANY
export:         to AS8884 announce ANY
remarks:        --------------
admin-c:        EG177-RIPE
tech-c:         LB6629-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
tech-c:         CB13290-RIPE
tech-c:         HA277-RIPE
mnt-by:         CASAWEB-MNT
created:        2002-07-19T07:58:04Z
last-modified:  2021-12-22T08:37:58Z
source:         RIPE
abuse-c:        AA25964-RIPE
abuse-org:      ORG-AS22-RIPE

organisation:   ORG-AS22-RIPE
org-name:       Acantho S.p.a
country:        IT
org-type:       LIR
address:        Via Molino Rosso 8
address:        40026
address:        IMOLA (BO)
address:        ITALY
phone:          +39 0542 843300
fax-no:         +39 0542 843349
admin-c:        FM2506-RIPE
admin-c:        MB36053-RIPE
admin-c:        DA1292-RIPE
admin-c:        HA277-RIPE
admin-c:        EG5923-RIPE
admin-c:        AF487-RIPE
admin-c:        EG177-RIPE
admin-c:        MM3845-RIPE
admin-c:        EM1782-RIPE
abuse-c:        AA25964-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        CASAWEB-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CASAWEB-MNT
created:        2004-04-17T11:29:58Z
last-modified:  2021-02-11T17:41:29Z
source:         RIPE

person:         Claudio Barbero
address:        Acantho Spa
address:        Viale Carlo Berti Pichat, 2/4
address:        40137 Bologna
address:        Italy
phone:          +39 051287164
fax-no:         +39 051287399
nic-hdl:        CB13290-RIPE
created:        2002-01-10T11:44:31Z
last-modified:  2015-07-02T08:52:39Z
source:         RIPE
mnt-by:         CASAWEB-MNT

person:         Antonio Cardone
address:        Acantho Spa
address:        Via Molino Rosso 8
address:        I-40026 IMOLA (BO)
address:        Italy
phone:          +39 0542 369300
fax-no:         +39 0542 369349
nic-hdl:        EG177-RIPE
mnt-by:         CASAWEB-MNT
created:        2002-01-30T12:02:07Z
last-modified:  2022-03-15T10:17:54Z
source:         RIPE

person:         Hostmaster Acantho
address:        Acantho Spa (ex Casaweb)
address:        Via Molino Rosso 8
address:        I-40026 IMOLA (BO)
address:        Italy
phone:          +39 0542 843300
fax-no:         +39 0542 843349
mnt-by:         CASAWEB-MNT
nic-hdl:        HA277-RIPE
created:        2002-06-07T07:01:24Z
last-modified:  2003-11-04T08:06:45Z
source:         RIPE

person:         Luca Baldisserri
address:        Acantho Spa
address:        Via Molino Rosso, 8
address:        I-40026 IMOLA (BO)
address:        Italy
phone:          +39 0542 843300
fax-no:         +39 0542 843349
nic-hdl:        LB6629-RIPE
created:        2008-12-04T13:07:45Z
last-modified:  2015-07-07T08:49:01Z
source:         RIPE
mnt-by:         CASAWEB-MNT
Get all this data and more in JSON format using our ASN API Read More

Hosted Domains

There are 4,109 domain names hosted across 423 IP addresses on this ASN.

IP Address Domain Domains on this IP 280 259 240 181 107 104 102 99 96 75 71 71 70 68 63 58 56 56 56 54 53 49 47 46 45 42 42 39 37 36 36 34 34 34 32 31 31 30 30 26 26 26 26 26 26 26 25 23 23 20

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity


There are 46 peers for this ASN.

Peers Name
AS1239 Sprint
AS12637 SEEWEB s.r.l.
AS12779 IT.Gate S.p.A.
AS13030 Init7 (Switzerland) Ltd.
AS13237 euNetworks GmbH
AS13786 Seabras 1 USA, LLC
AS14537 Continent 8 LLC
AS14840 BR Digital
AS15605 Connesi s.p.a.
AS174 Cogent Communications
AS199181 Orakom S.r.l.
AS199524 G-Core Labs S.A.
AS20811 Brennercom S.p.A.
AS209102 Alfa Service s.r.l.
AS20912 Giuliano Claudio Peritore trading as "Panservice s.a.s. di Cuseo Fabrizio & C."
AS24482 SG.GS
AS24961 myLoc managed IT AG
AS25160 Vorboss Limited
AS28716 Retelit Digital Services S.p.A.
AS3269 Telecom Italia S.p.A.
AS34224 Neterra Ltd.
AS34347 HALLAG Kommunal GmbH
AS39120 Convergenze S.p.A.
AS4455 IX Reach Ltd
AS49367 Seflow S.N.C. Di Marco Brame' & C.
AS49605 Digital Telecommunication Services S.r.l.
AS50877 Airbeam S.r.l.
AS51185 Onecom Global Communications LTD
AS5392 TELNET S.r.l.
AS57111 ALTITUD S.r.l.
AS57463 NetIX Communications JSC
AS60501 Sirius Technology SRL
AS6939 Hurricane Electric LLC
AS8220 COLT Technology Services Group Limited
AS8660 Italiaonline S.p.A.
AS9002 RETN Limited
Get all this data and more in JSON format using our ASN API Read More


There are 4 upstreams for this ASN.

upstreams Name
AS1239 Sprint
AS174 Cogent Communications
AS28716 Retelit Digital Services S.p.A.
AS3269 Telecom Italia S.p.A.
Get all this data and more in JSON format using our ASN API Read More


There are 5 downstreams for this ASN.

Downstreams Name
AS15923 Logos S.P.A.
AS197807 Eos sistemi s.r.l.
AS42933 Aeroporto G. Marconi di Bologna s.p.a.
AS49535 E-Mind Srl
AS8884 CRIF S.p.A.
Get all this data and more in JSON format using our ASN API Read More

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS21309 at robtex.

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