AS Name
CTU_AS4
Org Name
Czech Telecommunication Office
Registry Region
Czech
Looking Glass
IPv4Prefixes

1

IPv6Prefixes

1

IPv4 NUMs

256

IPv6 NUMs(/64)

4,294,967,296

256 IPv4 Addresses
CIDR Description IP Num
185.68.215.0/24 CZ-CTU-MEASUREMENT-SERVER 256
CIDR Description IP NUMs(prefix /64)
2a05:1c47::/32 CZ-CTU-MEASUREMENT-SERVER 4294967296
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS8218 NEO-ASN - Zayo France SAS, FR France 54,528 8,590,786,560 IPv4 IPv4 IPv6 IPv6
AS57463 NetIX - NetIX Communications Ltd., BG Bulgaria 768 0 IPv4 IPv4
AS60501 SIRIUSTEC-IT - Sirius Technology SRL, IT Italy 4,864 107,374,182,400 IPv4 IPv4 IPv6 IPv6
AS14840 COMMCORP COMUNICACOES LTDA, BR Brazil 53,760 16,106,586,112 IPv4 IPv4
AS24482 SGGS-AS-AP - SG.GS, SG Singapore 23,040 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS25248 BlueTone-AS - RADIOKOMUNIKACE a.s., CZ Czech 106,752 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS36236 NETACTUATE - NetActuate, Inc, US United States 59,136 10,228,858,880 IPv4 IPv4 IPv6 IPv6
AS39120 CONVERGENZE-AS - Convergenze S.p.A., IT Italy 95,744 4,294,967,296 IPv4 IPv4
AS43531 IXREACH - IX Reach Ltd, GB United Kingdom 14,592 4,294,967,296 IPv4 IPv4
AS263009 FORTE TELECOM LTDA., BR Brazil 3,072 4,294,967,296 IPv4 IPv4
AS264409 GRUPO YAX, BR Brazil 1,024 262,144 IPv4 IPv4
AS2852 CESNET2 - CESNET z.s.p.o., CZ Czech 848,896 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS5394 Unidata - UNIDATA S.p.A., IT Italy 83,968 4,294,967,296 IPv4 IPv4
AS6939 HURRICANE - Hurricane Electric LLC, US United States 503,296 282,665,488,678,912 IPv4 IPv4
AS28186 ITS TELECOMUNICACOES LTDA, BR Brazil 49,152 4,294,967,296 IPv4 IPv4
AS41327 FIBERTELECOM-AS - Fiber Telecom S.p.A., IT Italy 8,448 68,719,476,736 IPv4 IPv4
IP Address Domain NUMs Domains
185.68.215.10 1 qos.ctu.cz
as-block:       AS196608 - AS213403
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:        2020-10-28T07:56:37Z
last-modified:  2020-10-28T07:56:37Z
source:         RIPE



aut-num:        AS201594
as-name:        CTU_AS4
org:            ORG-CTO1-RIPE
admin-c:        RC19572-RIPE
tech-c:         VALE2-RIPE
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SUPER-CTU
import:         from AS5588 accept ANY
descr:          NIX.CZ
import:         from AS6881 accept ANY
import:         from AS47200 accept ANY
export:         to AS5588 announce AS201594
descr:          NIX.CZ
export:         to AS6881 announce AS201594
export:         to AS47200 announce AS201594
status:         ASSIGNED
created:        2014-09-12T09:04:28Z
last-modified:  2020-10-16T12:05:04Z
source:         RIPE

organisation:   ORG-CTO1-RIPE
org-name:       Czech Telecommunication Office
country:        CZ
org-type:       LIR
address:        Sokolovska 219
address:        19000
address:        Prague
address:        CZECH REPUBLIC
phone:          +420224004601
fax-no:         +420224004827
abuse-c:        AC28632-RIPE
mnt-ref:        SUPER-CTU
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SUPER-CTU
created:        2014-08-11T09:41:33Z
last-modified:  2020-12-16T13:27:28Z
source:         RIPE # Filtered
admin-c:        VALE2-RIPE

person:         Radek Chromy
address:        Sokolovska 219, Prague
phone:          +420 224 004 111
nic-hdl:        RC19572-RIPE
mnt-by:         SUPER-CTU
created:        2020-10-16T11:51:38Z
last-modified:  2020-10-16T11:51:38Z
source:         RIPE

person:         Pavel Vales
address:        Sokolovska 219
address:        Prague
address:        190000
address:        The Czech Republic
phone:          +420224004667
nic-hdl:        VALE2-RIPE
mnt-by:         SUPER-CTU
created:        2014-08-13T11:24:26Z
last-modified:  2017-10-30T22:38:00Z
source:         RIPE # Filtered