AS Number
AS Name
Org Name
OptoNet Communication, spol. s.r.o.






AS43542 Looking Glass






IPv6 NUMs(/64)


11,264 IPv4 Addresses
CIDR Description IP Num OptoNet Communication, spol. s.r.o. 8192 OptoNet Communication, spol. s.r.o. 1024 CNI Group s.r.o. 1024 CNI Group s.r.o. 1024
CIDR Description IP NUMs(prefix /64)
2a00:d940::/32 OptoNet Communication, spol. s.r.o. 4294967296
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS40994 Alwyzon - Michael Hohl trading as Hohl IT e.U., AT Austria 1,024 4,295,032,832 IPv4 IPv4 IPv6 IPv6
AS41327 FIBERTELECOM-AS - Fiber Telecom S.p.A., IT Italy 8,960 68,719,476,736 IPv4 IPv4 IPv6 IPv6
AS43531 IXREACH - IX Reach Ltd, GB United Kingdom 18,944 4,294,967,296 IPv4 IPv4 IPv6 IPv6
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 494,592 282,665,506,701,312 IPv4 IPv4 IPv6 IPv6
AS8218 NEO-ASN - Zayo France SAS, FR France 54,016 8,590,786,560 IPv4 IPv4 IPv6 IPv6
AS16019 VODAFONE-CZ-AS - Vodafone Czech Republic a.s., CZ Czech 1,208,832 253,403,070,464 IPv4 IPv4 IPv6 IPv6
AS57463 NetIX - NetIX Communications JSC, BG Bulgaria 512 0 IPv4 IPv4 IPv6 IPv6
AS1820 WNET - WNET TELECOM USA Corp., US United States 35,072 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS4455 BSO - IX Reach Ltd, GB United Kingdom 20,992 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS36236 NETACTUATE - NetActuate, Inc, US United States 56,320 5,665,128,448 IPv4 IPv4 IPv6 IPv6
AS263009 FORTE TELECOM LTDA., BR Brazil 3,840 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS174 COGENT-174 - Cogent Communications, US United States 27,334,144 224,501,006,336 IPv4 IPv4 IPv6 IPv6
AS39120 CONVERGENZE-AS - Convergenze S.p.A., IT Italy 32,256 12,884,901,888 IPv4 IPv4
AS41047 NL-MLAB - Bart Vrancken trading as MLaB, NL Netherlands 1,024 12,884,901,888 IPv4 IPv4
AS60501 SIRIUSTEC-IT - Sirius Technology SRL, IT Italy 14,592 107,374,182,400 IPv4 IPv4
AS264409 GRUPO YAX, BR Brazil 1,024 393,216 IPv4 IPv4 IPv6 IPv6
AS6881 NIXCZ - NIX.CZ z.s.p.o., CZ Czech 2,304 4,294,967,296 IPv4 IPv4
AS24482 SGGS-AS-AP - SG.GS, SG Singapore 23,296 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS44104 LCJ-AS - LCJ s.r.o., CZ Czech 256 0 IPv4 IPv4
AS57288 ASSTAMPI - StaMPi, spol. s r.o., CZ Czech 2,048 65,536 IPv4 IPv4
as-block:       AS42961 - AS45055
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:        2021-08-19T06:50:17Z
last-modified:  2021-08-19T06:50:17Z
source:         RIPE

aut-num:        AS43542
as-name:        OptoNet-AS
org:            ORG-OCLS3-RIPE
remarks:        ======== TRANSIT UPSTREAM ========
remarks:        -- VODAFONE-CZ --
import:         from AS16019 accept any
export:         to AS16019 announce AS-OPTONET-TRANSIT
remarks:        -- COGENT --
import:         from AS174 accept any
export:         to AS174 announce AS-OPTONET-TRANSIT
remarks:        ======== IXs peers ========
remarks:        -- NIX.CZ ROUTESERVERS --
import:         from AS47200 accept ANY
export:         to AS47200 announce AS-OPTONET-TRANSIT
remarks:        ======== TRANSIT CUSTOMERS ========
remarks:        -- Kraj Vysocina --
import:         from AS48091 accept AS48091
export:         to AS48091 announce any
remarks:        -- LCJ s.r.o. --
import:         from AS44104 accept AS44104
export:         to AS44104 announce any
remarks:        -- StaMPi, spol. s r.o. --
import:         from AS57288 accept AS57288
export:         to AS57288 announce any
remarks:        -- NGA Services, spol. s r.o. --
import:         from AS202979 accept AS202979 AS203365
export:         to AS202979 announce any
admin-c:        TJ1042-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
tech-c:         TJ1042-RIPE
mnt-by:         MNT-OPTONET
created:        2007-08-20T08:25:37Z
last-modified:  2021-11-08T19:27:28Z
source:         RIPE

organisation:   ORG-OCLS3-RIPE
org-name:       OptoNet Communication, spol. s.r.o.
country:        CZ
org-type:       LIR
address:        Cerveny Kriz 250
address:        56802
address:        Jihlava
address:        CZECH REPUBLIC
phone:          +420564040152
fax-no:         +420564040134
admin-c:        TJ1042-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MNT-OPTONET
mnt-ref:        MNT-OPTONET_JT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-OPTONET
abuse-c:        AOC17-RIPE
created:        2006-09-25T15:28:01Z
last-modified:  2021-11-02T22:01:26Z
source:         RIPE

person:         Tichy Josef
address:        OptoNet Communication, spol. s r.o.
address:        Cerveny Kriz 250
address:        568 02 Jihlava
address:        Czech republic
phone:          +420564040133
nic-hdl:        TJ1042-RIPE
mnt-by:         MNT-OPTONET_JT
created:        2007-08-06T07:09:45Z
last-modified:  2017-10-30T21:56:13Z
source:         RIPE