AS Number
AS12303
AS Name
ISZT-AS
Org Name
Magyarorszagi Internet Szolgaltatok Tanacsa Tudomanyos Egyesulet
Country
Hungary
Registry

ripe

RegDate

Updated

2018-11-22T15:27:24Z

AS12303 Looking Glass
IPv4Prefixes

1

IPv6Prefixes

1

IPv4 NUMs

1,024

IPv6 NUMs(/64)

16,777,216

1,024 IPv4 Addresses
CIDR Description IP Num
5.28.0.0/22
IRR Parent Valid
ISZT-NONPROFIT-KFT 1024
CIDR Description IP NUMs(prefix /64)
2a00:e6a0::/40
IRR Parent Valid
ISZT INTERNET SZOLGALTATOK Halozati Koordinacios Kozpontja Nonprofit KFT. 16777216
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS32590 VALVE-CORPORATION - Valve Corporation, US United States 13,312 2,228,224 IPv4 IPv4 IPv6 IPv6
AS33891 CORE-BACKBONE - Core-Backbone GmbH, DE Germany 0 0 IPv4 IPv4 IPv6 IPv6
AS40994 Alwyzon - Hohl IT e.U., AT Austria 5,888 38,654,705,664 IPv4 IPv4 IPv6 IPv6
AS47692 NESSUS - Nessus GmbH, AT Austria 37,632 34,359,869,440 IPv4 IPv4 IPv6 IPv6
AS49544 i3Dnet - i3D.net B.V, NL Netherlands 116,992 356,753,080,320 IPv4 IPv4 IPv6 IPv6
AS62214 RACKFOREST-AS - Rackforest Zrt., HU Hungary 17,664 8,624,603,136 IPv4 IPv4 IPv6 IPv6
AS6663 TTI-NET - Euroweb Romania S.R.L., RO Romania 39,680 6,442,450,944 IPv4 IPv4 IPv6 IPv6
AS6939 HURRICANE - Hurricane Electric LLC, US United States 457,984 282,666,025,418,752 IPv4 IPv4 IPv6 IPv6

Peers at this Exchange Point

Country/Region IX IPv4 IPv6 Port Speed Updated
Hungary BIX - Budapest Internet eXchange 193.188.137.10 2001:7f8:35::1:2303:4 10 Gbps 2026-02-06 10:12:08
Hungary BIX - Budapest Internet eXchange 193.188.137.8 2001:7f8:35::1:2303:3 10 Gbps 2026-02-06 10:11:34

Private Peering Facilities

Country/Region Name City Website Updated
BIX Building (Victor Hugo street) Budapest https://www.bif.hu 2026-02-06 10:13:25
Dataplex Budapest Budapest https://www.t-systems.hu/solutions/it-infrastructures/data-centre-services 2026-02-06 10:13:31
as-block:       AS12288 - AS12454
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:        2018-11-22T15:27:24Z
last-modified:  2018-11-22T15:27:24Z
source:         RIPE



aut-num:        AS12303
as-name:        ISZT-AS
descr:          ISZT Nonprofit Kft.
descr:          Blathy Otto utca 9.
descr:          H-1089 Budapest
descr:          Hungary
org:            ORG-MIST1-RIPE
remarks:        Upstreams
remarks:        ---------
mp-import:      afi ipv6.unicast from AS5507 accept AS-BIX-V6
mp-export:      afi ipv6.unicast to AS5507 announce AS-ISZT
mp-import:      afi ipv6.unicast from AS62214 accept ANY
mp-export:      afi ipv6.unicast to AS62214 announce AS-ISZT
mp-import:      afi ipv6.unicast from AS29278 accept ANY
mp-export:      afi ipv6.unicast to AS29278 announce AS-ISZT
import:         from AS5507 accept AS-BIX
export:         to AS5507 announce AS-ISZT
import:         from AS62214 accept ANY
export:         to AS62214 announce AS-ISZT
import:         from AS29278 accept ANY
export:         to AS29278 announce AS-ISZT
remarks:        Services
remarks:        --------
import:         from AS42909 accept { 194.0.1.0/24 }
import:         from AS42909 accept { 194.0.2.0/24 }
export:         to AS42909 announce AS-BIX
import:         from AS25152 accept { 193.0.14.0/24 }
export:         to AS25152 announce AS-BIX
import:         from AS1921 accept { 194.0.25.0/24 }
import:         from AS1921 accept { 192.174.68.0/24 }
import:         from AS1921 accept { 176.97.158.0/24 }
import:         from AS1921 accept { 91.237.67.0/24 }
import:         from AS1921 accept { 185.167.176.0/24 }
import:         from AS1921 accept { 193.227.117.0/24 }
import:         from AS1921 accept { 194.50.187.0/24 }
import:         from AS1921 accept { 194.0.182.0/24 }
import:         from AS1921 accept { 185.80.188.0/22 }
import:         from AS1921 accept { 193.46.128.0/22 }
import:         from AS1921 accept { 193.46.132.0/23 }
import:         from AS1921 accept { 193.46.134.0/24 }
import:         from AS1921 accept { 193.46.135.0/24 }
import:         from AS1921 accept { 194.0.26.0/24 }
import:         from AS1921 accept { 194.0.24.0/24 }
export:         to AS1921 announce AS-BIX
member-of:      AS3320:AS-AUTH-PILOT-BLACKHOLE-FROM-AS5483
admin-c:        JZ1170-RIPE
tech-c:         JZ1170-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         HU-NIC-MNT
mnt-by:         AS5507-MNT
created:        2005-06-14T09:03:41Z
last-modified:  2026-06-22T11:18:49Z
source:         RIPE

organisation:   ORG-MIST1-RIPE
org-name:       Magyarorszagi Internet Szolgaltatok Tanacsa Tudomanyos Egyesulet
country:        HU
reg-nr:         01-02-0007581
org-type:       LIR
address:        Blathy Otto utca 9.
address:        1089
address:        Budapest
address:        HUNGARY
phone:          +36 30 626 6745
e-mail:         bix@iszt.hu
admin-c:        ANGE11-RIPE
tech-c:         ANGE11-RIPE
abuse-c:        AR56674-RIPE
mnt-ref:        AS5507-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS5507-MNT
created:        2019-11-12T11:19:14Z
last-modified:  2026-06-22T10:35:18Z
source:         RIPE

person:         Janos Zsako
address:        ISZT Nonprofit Kft.
address:        Blathy Otto u. 9.
address:        1089 Budapest
address:        Hungary
phone:          +36 1 238 0115
e-mail:         ripe@iszt.hu
nic-hdl:        JZ1170-RIPE
mnt-by:         ISZT-MNT
created:        2012-04-03T09:21:56Z
last-modified:  2026-04-10T13:02:33Z
source:         RIPE