AS Number
AS43037
AS Name
SEZNAM-CZ
Org Name
Seznam.cz, a.s.
Country
Czech
Registry

ripe

RegDate

Updated

2023-12-11T15:09:58Z

AS43037 Looking Glass
IPv4Prefixes

6

IPv6Prefixes

6

IPv4 NUMs

3,072

IPv6 NUMs(/64)

4,294,967,296

3,072 IPv4 Addresses
CIDR Description IP Num
77.75.72.0/23
IRR Valid
Seznam.cz, a.s. 512
77.75.74.0/24
IRR Valid
SEZNAM-CZ 256
77.75.75.0/24
IRR Valid
SEZNAM-CZ 256
77.75.76.0/23
IRR Valid
SEZNAM-CZ 512
77.75.78.0/23
IRR Valid
SEZNAM-CZ 512
185.66.188.0/22
ROA Signed and Valid IRR Valid
Seznam.cz, a.s. 1024
CIDR Description IP NUMs(prefix /64)
2a02:598::/32
ROA Signed and Valid IRR Valid
Seznam.cz, a.s. 4294967296
2a02:598:2::/48
ROA Signed and Valid IRR Valid
DC-Nagano 65536
2a02:598:a::/48
ROA Signed and Valid IRR Valid
DC-Kokura 65536
2a02:598:b::/48
ROA Signed and Valid IRR Valid
DC-Nagano-future 65536
2a02:598:3333::/48
IRR Valid
DC-Kokura-DNS 65536
2a02:598:4444::/48
ROA Signed and Valid IRR Valid
DC-Nagano-dns 65536
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS3786 LGDACOM - LG DACOM Corporation, KR Republic of Korea 8,692,736 12,784,369,664 IPv4 IPv4
AS13237 LAMBDANET-AS - euNetworks GmbH, DE Germany 570,880 107,374,182,400 IPv4 IPv4
AS7195 EDGEUNO S.A.S, CO Colombia 31,232 4,275,240,960 IPv4 IPv4 IPv6 IPv6
AS9930 TTNET-MY - TT DOTCOM SDN BHD, MY Malaysia 741,888 4,295,098,368 IPv4 IPv4 IPv6 IPv6
AS39120 CONVERGENZE-AS - Convergenze S.p.A., IT Italy 43,520 17,179,869,184 IPv4 IPv4
AS47734 TELECOM-IT-SOLUTIONS-AS - Telecom IT Solutions SRL, RO Romania 256 65,536 IPv4 IPv4 IPv6 IPv6
AS61573 Ip Telecom BR, BR Brazil 1,024 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS34224 NETERRA-AS - Neterra Ltd., BG Bulgaria 37,632 4,295,032,832 IPv4 IPv4
AS37100 SEACOM-AS - SEACOM Limited, MU Mauritius 1,072,896 17,179,869,184 IPv4 IPv4 IPv6 IPv6
AS48362 TKSWF-AS - Stadtwerke Feldkirch, AT Austria 7,680 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS5610 O2-CZECH-REPUBLIC - O2 Czech Republic, a.s., CZ Czech 1,542,912 47,244,705,792 IPv4 IPv4 IPv6 IPv6
AS6695 DECIX-AS - DE-CIX Management GmbH, DE Germany 0 0 IPv4 IPv4 IPv6 IPv6
AS34177 CELESTE-AS - CELESTE SAS, FR France 289,792 98,784,247,808 IPv4 IPv4
AS35280 F5 - F5 Networks SARL, FR France 53,248 81,604,378,624 IPv4 IPv4 IPv6 IPv6
AS30781 JAGUAR-AS - Free Pro SAS, FR France 117,504 133,144,051,712 IPv6 IPv6
AS559 Switch, CH Switzerland 2,184,704 176,093,790,208 IPv4 IPv4 IPv6 IPv6
AS13058 serve-u-AS - serve-u - Buchholz und Suenderhauf GbR, DE Germany 2,048 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS39351 ESAB-AS - 31173 Services AB, SE Sweden 9,984 4,331,667,456 IPv4 IPv4 IPv6 IPv6
AS41327 FIBERTELECOM-AS - Fiber Telecom S.p.A., IT Italy 7,168 68,719,476,736 IPv4 IPv4 IPv6 IPv6
AS47147 AS-ANX - ANEXIA Internetdienstleistungs GmbH, AT Austria 1,536 131,072 IPv4 IPv4
AS49544 i3Dnet - i3D.net B.V, NL Netherlands 106,240 355,679,338,496 IPv4 IPv4 IPv6 IPv6
AS1764 NEXTLAYER-AS - Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH, AT Austria 85,760 274,878,234,624 IPv4 IPv4 IPv6 IPv6
AS8218 NEO-ASN - Zayo Infrastructure France SA, FR France 47,360 12,884,967,424 IPv4 IPv4 IPv6 IPv6
AS14840 BR.Digital Provider, BR Brazil 70,656 14,010,155,008 IPv4 IPv4 IPv6 IPv6
AS24482 SGGS-AS-AP - SG.GS, SG Singapore 20,992 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS58511 ANYCAST-GLOBAL-BACKBONE - Anycast Holdings Pty Ltd, AU Australia 23,552 8,589,934,592 IPv4 IPv4 IPv6 IPv6
AS209823 ENKI-AS - Enki Multimedia EURL, FR France 768 4,295,360,512 IPv4 IPv4 IPv6 IPv6
AS28716 RETELIT-AS - Retelit Digital Services S.p.A., IT Italy 43,520 107,374,182,400 IPv4 IPv4 IPv6 IPv6
AS34019 HIVANE - Hivane Association, FR France 2,816 1,245,184 IPv4 IPv4 IPv6 IPv6
AS37468 ANGOLA-CABLES - Angola Cables, AO Angola 9,216 42,949,672,960 IPv4 IPv4 IPv6 IPv6
AS9002 RETN-AS - RETN Limited, GB United Kingdom 37,376 4,294,967,296 IPv6 IPv6
AS18106 VIEWQWEST-SG-AP - Viewqwest Pte Ltd, SG Singapore 53,248 13,153,337,344 IPv4 IPv4 IPv6 IPv6
AS6057 Administracion Nacional de Telecomunicaciones, UY Uruguay 2,155,520 68,719,476,736 IPv4 IPv4 IPv6 IPv6
AS25091 IP-Max - IP-Max SA, CH Switzerland 15,104 68,719,607,808 IPv4 IPv4 IPv6 IPv6
AS31510 IKB-AS - Innsbrucker Kommunalbetriebe AG, AT Austria 27,904 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS35360 GARGUNET - Frederic Gargula, CH Switzerland 1,024 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS12779 ITGATE - IT.Gate S.p.A., IT Italy 46,080 42,949,804,032 IPv4 IPv4 IPv6 IPv6
AS20932 SIG-ST - Services Industriels de Geneve, CH Switzerland 9,472 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS51184 FONIRA - Fonira Telekom GmbH, AT Austria 13,824 111,669,542,912 IPv4 IPv4 IPv6 IPv6
AS6939 HURRICANE - Hurricane Electric LLC, US United States 463,872 282,627,370,778,624 IPv4 IPv4 IPv6 IPv6
AS12552 IPO-EU - GlobalConnect AB, SE Sweden 562,432 210,454,249,472 IPv4 IPv4
AS29075 IELO - IELO-LIAZO SERVICES SAS, FR France 35,840 107,374,182,400 IPv4 IPv4 IPv6 IPv6
AS29208 QUANTCOM-AS - Quantcom, a.s., CZ Czech 255,488 12,884,901,888 IPv4 IPv4 IPv6 IPv6
AS40994 Alwyzon - Hohl IT e.U., AT Austria 4,096 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS5398 InternetONE - Internet one SRL, CH Switzerland 19,968 38,654,705,664 IPv4 IPv4 IPv6 IPv6
AS5713 SAIX-NET - Telkom SA Ltd., ZA South Africa 2,187,776 17,600,776,044,544 IPv4 IPv4 IPv6 IPv6
AS15547 NETPLUS - netplus.ch SA, CH Switzerland 135,168 42,949,672,960 IPv4 IPv4 IPv6 IPv6
AS47692 NESSUS - Nessus GmbH, AT Austria 37,120 34,359,869,440 IPv4 IPv4 IPv6 IPv6
AS7713 telkomnet-as-ap - Telekomunikasi Indonesia (PT), ID Indonesia 4,280,320 12,885,032,960 IPv4 IPv4 IPv6 IPv6
AS52320 GlobeNet Cabos Submarinos Colombia, S.A.S., CO Colombia 4,096 8,589,934,592 IPv4 IPv4 IPv6 IPv6
AS30844 LIQUID-AS - Liquid Telecommunications Ltd, GB United Kingdom 368,896 38,654,705,664 IPv6 IPv6
AS9498 BBIL-AP - Bharti Airtel Limited, IN India 2,195,200 4,299,161,600 IPv4 IPv4 IPv6 IPv6
AS17557 PKTELECOM-AS-PK - Pakistan Telecommuication company limited, PK Pakistan 3,855,740 4,295,032,832 IPv4 IPv4
AS37721 Virtual-Technologies-Solutions-SA - Virtual Technologies & Solutions, BF Burkina Faso 15,872 8,589,934,592 IPv4 IPv4 IPv6 IPv6
AS57463 NetIX - NetIX Communications JSC, BG Bulgaria 256 0 IPv4 IPv4 IPv6 IPv6
AS60602 INOVARE-AS - Inovare-Prim SRL, MD Moldova 3,584 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS6663 TTI-NET - Euroweb Romania S.R.L., RO Romania 54,528 6,442,450,944 IPv6 IPv6
AS35625 EUROFIBER-FRANCE - Eurofiber France SAS, FR France 28,928 103,095,992,320 IPv4 IPv4
AS49605 DTS-AS - Digital Telecommunication Services S.r.l., IT Italy 9,472 38,654,705,664 IPv4 IPv4
AS137409 GSLNETWORKS-AS-AP - GSL Networks Pty LTD, AU Australia 99,072 94,583,324,672 IPv4 IPv4 IPv6 IPv6
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS200600 SEZNAM-CZ-DC - Seznam.cz datova centra, s.r.o., CZ Czech 1,024 34,359,738,368 IPv4 IPv4 IPv6 IPv6

Peers at this Exchange Point

Country/Region IX IPv4 IPv6 Port Speed Updated
Czech NIX.CZ - Neutral Internet Exchange in the Czech Republic 91.210.16.194 2001:7f8:14::36:1 100 Gbps 2017-03-23 09:21:32
Czech NIX.CZ - Neutral Internet Exchange in the Czech Republic 91.210.16.195 2001:7f8:14::36:2 100 Gbps 2017-03-23 09:21:32
Czech NIX.CZ FENIX 194.50.100.194 2001:7f8:14:5ec::36:1 100 Gbps 2020-02-19 04:07:54
Czech NIX.CZ FENIX 194.50.100.195 2001:7f8:14:5ec::36:2 100 Gbps 2020-02-19 04:07:54

Private Peering Facilities

Country/Region Name City Website Updated
as-block:       AS42961 - AS43073
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:        2023-12-11T15:09:58Z
last-modified:  2023-12-11T15:09:58Z
source:         RIPE



aut-num:        AS43037
as-name:        SEZNAM-CZ
org:            ORG-Sa508-RIPE
import:         from AS9148 accept ANY
import:         from AS5610 accept ANY
export:         to AS9148 announce AS43037
export:         to AS5610 announce AS43037
export:         to AS5610 announce AS200600
admin-c:        SZN5-RIPE
tech-c:         SZN5-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SEZNAM-MNT
created:        2007-05-29T08:00:03Z
last-modified:  2017-11-15T09:48:45Z
source:         RIPE

organisation:   ORG-SA508-RIPE
org-name:       Seznam.cz, a.s.
country:        CZ
org-type:       LIR
address:        Radlicka 3294/10
address:        15000
address:        Prague 5
address:        CZECH REPUBLIC
phone:          +420234694111
fax-no:         +420234694115
e-mail:         ripe@firma.seznam.cz
admin-c:        PZ172-RIPE
admin-c:        FEIX-RIPE
abuse-c:        AD10910-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        SEZNAM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SEZNAM-MNT
created:        2007-05-01T10:11:05Z
last-modified:  2020-12-16T12:39:31Z
source:         RIPE

role:           Seznam.cz IT department
address:        Radlicka 3294/10 150 00 Prague 5 Czech Republic
e-mail:         noc@firma.seznam.cz
phone:          +420 602 126 570
abuse-mailbox:  abuse@seznam.cz
admin-c:        PZ172-RIPE
tech-c:         SZN11-RIPE
tech-c:         SZN10-RIPE
nic-hdl:        SZN5-RIPE
mnt-by:         SEZNAM-MNT
created:        2007-05-06T15:50:27Z
last-modified:  2015-07-03T13:19:00Z
source:         RIPE