// Acantho //

AS Name: CASAWEB-AS

Description: Via Molino Rosso 8 IMOLA (BO) ITALY

Organization: ORG-AS22-RIPE

Registry: RIPE

Imports from (138)

AS3257 AS28716 AS174 AS3269 AS9002 AS31638 AS1267 AS-INFOSTRADA AS3313 AS-INET AS5392 AS-TELNET AS5396 AS-MC-LINK AS6730 AS-SUNRISE AS6734 AS-SPIN AS8224 AS-INTERCOM AS8674 AS-NETNOD AS8816 AS-IT-STCOM AS9026 AS-ULI AS9137 AS-UNO AS12721 AS-LOMBARDIACOM AS12779 AS-ITGATE AS12850 AS-ENTER AS12874 AS-FASTWEB AS16004 AS-MIXITA AS24915 AS-TELEUNIT AS12637 AS-SEEWEB AS9102 AS-PLEXIA AS39912 AS-I3B AS8234 AS-RAI AS31034 AS-ARUBA
... and 88 more

Exports to (83)

AS3257 AS-ACANTHO AS28716 AS174 AS3269 AS9002 AS31638 AS21309 AS1267 AS3313 AS5392 AS5396 AS6730 AS6734 AS8224 AS8674 AS8816 AS9026 AS9137 AS12721 AS12779 AS12850 AS12874 AS16004 AS24915 AS12637 AS9102 AS39912 AS8234 AS31034 AS28929 AS34695 AS44160 AS6760 AS16276 AS25525 AS35574 AS15720 AS47217 AS21056 AS48634 AS47927 AS8265 AS16265 AS12835 AS5602 AS15469 AS15589 AS12399 AS8922
... and 33 more

⚠️ CIRCL BGP Security Rank: 0.0032% (position 11791)

aut-num:        AS21309
org:            ORG-AS22-RIPE
as-name:        CASAWEB-AS
descr:          Herabit SpA, 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
import:         from AS9002 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
import:         from AS29177 action pref=100; accept AS-ASCOTLC
import:         from AS207157 action pref=100; accept AS207157
import:         from AS31495 action pref=100; accept AS31495
import:         from AS214164 action pref=100; accept AS214164
import:         from AS35514 action pref=100; accept AS35514
import:         from AS211102 action pref=100; accept AS211102
import:         from AS210452 action pref=100; accept AS210452
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
export:         to AS9002 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
export:         to AS29177 announce ANY
export:         to AS207157 announce ANY
export:         to AS31495 announce ANY
export:         to AS214164 announce ANY
export:         to AS35514 announce ANY
export:         to AS211102 announce ANY
export:         to AS210452 announce ANY
remarks:        --------------
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         CASAWEB-MNT
notify:         lir.herabit@gruppohera.it
created:        2002-07-19T07:58:04Z
last-modified:  2026-09-11T14:27:17Z
source:         RIPE
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************

Direct Membership

Macros that directly list AS21309 as a member:

AS-ACANTHO(12 members)
AS-CWITCUST(20 members)
AS-WIFIWEB-MIX(51 members)
AS-RETELIT(167 members)
AS-IBSCUST(481 members)
AS-UDOS(1177 members)
AS-RETN-ACTUAL-V6(3802 members)
AS-LEVEL3-ORIGINS-EU(7728 members)
AS-RETN-ACTUAL-V4(12045 members)

Expanded Membership

All macros containing AS21309 (directly or via nested macros): 314

Show 100 macros

AS-ACANTHO(12 ASNs)
AS-CWITCUST(39 ASNs)
AS-WIFIWEB-MIX(51 ASNs)
AS-CWEUROPE(149 ASNs)
AS-RETELIT(236 ASNs)
AS702:AS-IT-CUSTOMER(633 ASNs)
AS-UDOS(1,556 ASNs)
AS-RETN-ACTUAL-V6(3,802 ASNs)
AS-IBSCUST(3,862 ASNs)
AS-SEABONECUSTIT(4,379 ASNs)
AS-LIMELIGHT-CUST(4,913 ASNs)
AS-LIMELIGHT(4,922 ASNs)
AS-LLNW(4,943 ASNs)
AS-RCN-CE-PEERS(5,340 ASNs)
AS-LEVEL3-ORIGINS-EU(7,728 ASNs)
AS-LEVELTHREEEU(7,728 ASNs)
AS-AS209(10,244 ASNs)
AS-QWEST(10,244 ASNs)
AS-EDGEUNO-TR(10,995 ASNs)
AS-KDDTRANSIT(11,930 ASNs)
AS-RETN-ACTUAL-V4(12,045 ASNs)
AS-EUNET(13,944 ASNs)
AS2914:AS-SA-V6(14,359 ASNs)
AS2914:AS-SA(14,363 ASNs)
AS-SAIX(15,195 ASNs)
AS-VOXILITY-SET(15,206 ASNs)
AS-RDSNET(16,878 ASNs)
AS-RDSTRANSIT(16,878 ASNs)
AS-MAGYARTELEKOM(17,357 ASNs)
AS-MATAV(17,357 ASNs)
AS-1031-PEER1(18,971 ASNs)
AS-LINKBRASIL-271253(19,032 ASNs)
AS271253:AS-CUSTOMERS(19,032 ASNs)
AS-ST1-PEERINGS(19,133 ASNs)
AS-COMCAST-IBONE(19,609 ASNs)
AS-OCCAID6(19,611 ASNs)
AS-OCCAID6-CUSTOMERS(19,611 ASNs)
AS-NOTSURFNET-PEERS(19,650 ASNs)
AS-EDGEUNO(19,687 ASNs)
AS-MZIMA-CUSTOMERS(19,702 ASNs)
AS-MZIMA(19,703 ASNs)
AS-PXGLOBAL(19,703 ASNs)
AS-ARBINET-LAX-BUYERS(19,875 ASNs)
AS-AS53013(20,143 ASNs)
AS-VSNL-IN(23,661 ASNs)
AS4470:AS-TORIX-PEERS(27,996 ASNs)
AS4470:AS-PEERS(28,002 ASNs)
AS-KCIX-MEMBERS(32,832 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-EQUINIX-PA(34,681 ASNs)
AS-T-CIX(36,150 ASNs)
AS30781:AS-JAGUAR-PEERING-EQUINIX-PA(37,230 ASNs)
AS-ECRCCUSTDE(37,596 ASNs)
AS-ECRC(37,597 ASNs)
AS-ECRCDE(37,597 ASNs)
AS-ECRCLINX(37,597 ASNs)
AS-CWE(37,716 ASNs)
AS-UUNETPIPEXLINX(38,009 ASNs)
AS-VSIX-RS(38,411 ASNs)
AS-4IXP(42,438 ASNs)
AS702:AS-CUSTOMER(43,022 ASNs)
AS-INTEROUTE(43,471 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-FRANCE-IX-MARSEILLE(44,422 ASNs)
AS-RETN6(44,950 ASNs)
AS-TELIANETRU-V6(45,288 ASNs)
AS1299:AS-TWELVE99-RU-V6(45,288 ASNs)
AS30781:AS-JAGUAR-PEERING-FRANCE-IX-MARSEILLE(46,036 ASNs)
AS-RETN(47,667 ASNs)
AS2914:AS-US-V6(52,836 ASNs)
AS2914:AS-US(53,991 ASNs)
AS-BIX-V6(56,058 ASNs)
AS-TELIANETRU(56,840 ASNs)
AS1299:AS-TWELVE99-RU-V4(56,840 ASNs)
AS-TOPIX-RS(57,252 ASNs)
AS3491:AS-CUSTOMERS-AP(58,474 ASNs)
AS-CTGNET(58,815 ASNs)
AS-37662(59,003 ASNs)
AS-CN(59,223 ASNs)
AS-LEVEL3-UAE(60,102 ASNs)
AS-PLIX6(60,222 ASNs)
AS-SET-INEX-RS(60,298 ASNs)
AS-BCIX-RS(61,123 ASNs)
AS16374:AS-BCIX-RS(61,123 ASNs)
AS-CAIS(61,483 ASNs)
AS213687:AS-ERA-IX-FRANKFURT(61,777 ASNs)
AS-SOVAM-V6(64,052 ASNs)
AS-SOVAM6(64,052 ASNs)
AS-HKIX(64,663 ASNs)
AS-TELIANETASIA(65,174 ASNs)
AS1299:AS-TWELVE99-AP-V4(65,174 ASNs)
AS-PANTEL(65,191 ASNs)
AS-TTI(65,191 ASNs)
AS206221:AS-ERA-IX-AMSTERDAM(65,700 ASNs)
AS-ERA-IX(65,707 ASNs)
AS5405:AS-INTERDOTLINK(66,620 ASNs)
AS-STUTTGARTIX-RS(66,636 ASNs)
AS-TELIANETASIA-V6(66,784 ASNs)
AS1299:AS-TWELVE99-AP-V6(66,784 ASNs)
AS-CW6(66,853 ASNs)
AS1273:AS-CWW-V6(66,853 ASNs)
AS201561:AS-DECIX-CPH(66,988 ASNs)
... and 214 more

Upstream AS Paths

47 unique paths, avg length 2.0

AS Looking Glass

Upstream paths (matching graph above)

AS852 → AS174 → AS21309
AS35008 → AS1299 → AS174 → AS21309
AS1403 → AS174 → AS21309
AS2497 → AS174 → AS21309
AS2516 → AS174 → AS21309
AS3130 → AS174 → AS21309
AS7018 → AS174 → AS21309
AS7594 → AS174 → AS21309
AS150000 → AS18187 → AS174 → AS21309
AS19151 → AS174 → AS21309
AS38880 → AS174 → AS21309
AS136557 → AS174 → AS21309
AS2518 → AS9002 → AS21309
AS8298 → AS9002 → AS21309
AS19151 → AS9002 → AS21309
AS25091 → AS9002 → AS21309
AS38001 → AS9002 → AS21309
AS49544 → AS9002 → AS21309
AS52320 → AS9002 → AS21309
AS209823 → AS9002 → AS21309

All 47 Upstream Paths

Complete list of all observed paths

AS852 → AS174 → AS21309
AS35008 → AS1299 → AS174 → AS21309
AS1403 → AS174 → AS21309
AS2497 → AS174 → AS21309
AS2516 → AS174 → AS21309
AS3130 → AS174 → AS21309
AS7018 → AS174 → AS21309
AS7594 → AS174 → AS21309
AS150000 → AS18187 → AS174 → AS21309
AS19151 → AS174 → AS21309
AS38880 → AS174 → AS21309
AS136557 → AS174 → AS21309
AS6762 → AS21309
AS140627 → AS1299 → AS6762 → AS21309
AS2497 → AS2914 → AS6762 → AS21309
AS11399 → AS6939 → AS6762 → AS21309
AS142271 → AS9304 → AS6762 → AS21309
AS25091 → AS6762 → AS21309
AS32590 → AS6762 → AS21309
AS46450 → AS6762 → AS21309
AS63956 → AS6762 → AS21309
AS199524 → AS6762 → AS21309
AS6939 → AS21309
AS7500 → AS6939 → AS21309
AS150000 → AS18187 → AS6939 → AS21309
AS8298 → AS58299 → AS6939 → AS21309
AS148968 → AS6939 → AS21309
AS150000 → AS6939 → AS21309
AS7713 → AS21309
AS9002 → AS21309
AS2518 → AS9002 → AS21309
AS8298 → AS9002 → AS21309
AS14537 → AS9002 → AS21309
AS19151 → AS9002 → AS21309
AS25091 → AS9002 → AS21309
AS38001 → AS9002 → AS21309
AS49544 → AS9002 → AS21309
AS52320 → AS9002 → AS21309
AS209823 → AS9002 → AS21309
AS13030 → AS21309
AS52468 → AS22356 → AS21309
AS24482 → AS21309
AS49544 → AS21309
AS53062 → AS21309
AS137409 → AS21309
AS199524 → AS137409 → AS21309
AS266213 → AS262355 → AS21309

AS21309 IPv4 Address Subnets (57)

213.209.192.0/18	🇮🇹 IT	Acantho network	CASAWEB-AS
77.89.0.0/18	🇮🇹 IT	Acantho network	CASAWEB-AS
213.174.160.0/19	🇮🇹 IT	Acantho network	CASAWEB-AS
213.209.192.0/19	🇮🇹 IT	Acantho network	CASAWEB-AS
213.209.224.0/19	🇮🇹 IT	Acantho network	CASAWEB-AS
77.89.0.0/19	🇮🇹 IT	Acantho network	CASAWEB-AS
77.89.32.0/19	🇮🇹 IT	Acantho network	CASAWEB-AS
83.216.160.0/19	🇮🇹 IT	SATCOM via AS21309	CASAWEB-AS
86.110.128.0/19	🇮🇹 IT	SATCOM via AS21309	CASAWEB-AS
213.174.160.0/20	🇮🇹 IT	Acantho Network	CASAWEB-AS