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

ripe

RegDate

N/A

Updated

2017-11-15T09:48:45Z

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 Seznam.cz, a.s. 512
77.75.74.0/24 SEZNAM-CZ 256
77.75.75.0/24 SEZNAM-CZ 256
77.75.76.0/23 SEZNAM-CZ 512
77.75.78.0/23 SEZNAM-CZ 512
185.66.188.0/22 Seznam.cz, a.s. 1024
CIDR Description IP NUMs(prefix /64)
2a02:598::/32 Seznam.cz, a.s. 4294967296
2a02:598:2::/48 DC-Nagano 65536
2a02:598:a::/48 DC-Kokura 65536
2a02:598:b::/48 DC-Nagano-future 65536
2a02:598:3333::/48 DC-Kokura-DNS 65536
2a02:598:4444::/48 DC-Nagano-dns 65536
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS263009 FORTE TELECOM LTDA., BR Brazil 3,072 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS20562 OPEN-PEERING-AS - Broadband Hosting B.V., NL Netherlands 0 0 IPv6 IPv6
AS47147 AS-ANX - ANEXIA Internetdienstleistungs GmbH, AT Austria 1,536 196,608 IPv4 IPv4 IPv6 IPv6
AS14840 COMMCORP COMUNICACOES LTDA, BR Brazil 64,512 15,083,634,688 IPv4 IPv4 IPv6 IPv6
AS15547 NETPLUS - netplus.ch SA, CH Switzerland 134,144 42,949,672,960 IPv4 IPv4 IPv6 IPv6
AS29075 IELO - IELO-LIAZO SERVICES SAS, FR France 42,240 107,374,182,400 IPv4 IPv4 IPv6 IPv6
AS34224 NETERRA-AS - Neterra Ltd., BG Bulgaria 42,496 4,294,967,296 IPv4 IPv4
AS36351 SOFTLAYER - SoftLayer Technologies Inc., US United States 4,354,816 39,668,088,832 IPv4 IPv4
AS37721 Virtual-Technologies-Solutions-SA - Virtual Technologies & Solutions, BF Burkina Faso 15,360 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS49605 DTS-AS - Digital Telecommunication Services S.r.l., IT Italy 9,472 38,654,705,664 IPv4 IPv4
AS6939 HURRICANE - Hurricane Electric LLC, US United States 528,640 282,631,665,680,384 IPv4 IPv4 IPv6 IPv6
AS328832 Network-Platforms-International - Network Platforms (PTY) LTD, ZA South Africa 0 0 IPv4 IPv4
AS6057 Administracion Nacional de Telecomunicaciones, UY Uruguay 2,164,224 68,719,476,736 IPv4 IPv4 IPv6 IPv6
AS13058 serve-u-AS - serve-u - Buchholz und Suenderhauf GbR, DE Germany 1,792 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS13237 LAMBDANET-AS - euNetworks GmbH, DE Germany 562,944 111,669,149,696 IPv4 IPv4
AS22356 Durand do Brasil Ltda, BR Brazil 29,184 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS35280 F5 - F5 Networks SARL, FR France 50,432 81,604,378,624 IPv4 IPv4 IPv6 IPv6
AS47692 NESSUS - Nessus GmbH, AT Austria 35,328 34,360,066,048 IPv4 IPv4 IPv6 IPv6
AS57463 NetIX - NetIX Communications JSC, BG Bulgaria 512 0 IPv4 IPv4 IPv6 IPv6
AS559 SWITCH, CH Switzerland 2,183,680 176,093,790,208 IPv4 IPv4 IPv6 IPv6
AS12779 ITGATE - IT.Gate S.p.A., IT Italy 45,568 42,949,804,032 IPv4 IPv4 IPv6 IPv6
AS28716 RETELIT-AS - Retelit Digital Services S.p.A., IT Italy 48,384 107,374,182,400 IPv4 IPv4 IPv6 IPv6
AS37100 SEACOM-AS - SEACOM Limited, MU Mauritius 1,072,896 12,884,901,888 IPv4 IPv4 IPv6 IPv6
AS262589 INTERNEXA BRASIL OPERADORA DE TELECOMUNICACOES S.A, BR Brazil 235,264 30,086,594,560 IPv4 IPv4
AS9002 RETN-AS - RETN Limited, GB United Kingdom 28,160 4,294,967,296 IPv6 IPv6
AS5610 O2-CZECH-REPUBLIC - O2 Czech Republic, a.s., CZ Czech 1,543,168 47,244,705,792 IPv4 IPv4 IPv6 IPv6
AS31510 IKB-AS - Innsbrucker Kommunalbetriebe AG, AT Austria 27,904 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS2852 CESNET2 - CESNET z.s.p.o., CZ Czech 848,896 34,359,738,368 IPv6 IPv6
AS34927 iFog-GmbH - iFog GmbH, CH Switzerland 4,096 174,850,048 IPv6 IPv6
AS29208 QUANTCOM-AS - Quantcom, a.s., CZ Czech 254,976 12,884,901,888 IPv4 IPv4 IPv6 IPv6
AS271253 LINK BRASIL TELECOMUNICACOES LTDA, BR Brazil 4,096 4,849,991,680 IPv4 IPv4
AS1267 ASN-WINDTRE - WIND TRE S.P.A., IT Italy 6,567,936 2,233,382,993,920 IPv6 IPv6
AS30781 JAGUAR-AS - Free Pro SAS, FR France 96,768 133,144,051,712 IPv6 IPv6
AS17557 PKTELECOM-AS-PK - Pakistan Telecommuication company limited, PK Pakistan 3,854,936 4,295,032,832 IPv4 IPv4
AS8218 NEO-ASN - Zayo Infrastructure France SA, FR France 47,616 12,884,967,424 IPv4 IPv4 IPv6 IPv6
AS39351 ESAB-AS - 31173 Services AB, SE Sweden 9,984 8,590,786,560 IPv4 IPv4
AS45352 IPSERVERONE-AS-AP - IP ServerOne Solutions Sdn Bhd, MY Malaysia 39,424 4,027,645,952 IPv4 IPv4
AS56987 AS-ABACLOUDA - ABACLOUDA SAS, FR France 1,024 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS8529 OMANTEL-AS - Zain Omantel International FZ-LLC, AE United Arab Emirates 15,360 0 IPv6 IPv6
AS5713 SAIX-NET - Telkom SA Ltd., ZA South Africa 1,990,656 17,600,778,076,160 IPv4 IPv4 IPv6 IPv6
AS6204 ZET-NET - INTERKVM HOST SRL, RO Romania 512 268,500,992 IPv4 IPv4 IPv6 IPv6
AS58299 OPENFACTORY-AS - Openfactory GmbH, CH Switzerland 3,072 17,179,934,720 IPv4 IPv4 IPv6 IPv6
AS5398 AS5398 - AS5398 SA, CH Switzerland 13,312 42,949,672,960 IPv4 IPv4
AS137409 GSLNETWORKS-AS-AP - GSL Networks Pty LTD, AU Australia 53,248 141,751,156,736 IPv4 IPv4 IPv6 IPv6
AS40994 Alwyzon - Hohl IT e.U., AT Austria 2,560 4,295,032,832 IPv4 IPv4 IPv6 IPv6
AS51184 FONIRA - Fonira Telekom GmbH, AT Austria 12,800 111,669,739,520 IPv4 IPv4 IPv6 IPv6
AS18106 VIEWQWEST-SG-AP - Viewqwest Pte Ltd, SG Singapore 53,248 13,153,337,344 IPv4 IPv4
AS59890 Kabel-TV-Lampert - Kabel-TV Lampert GmbH & Co KG, AT Austria 13,312 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS1828 UNITAS - Unitas Global LLC, US United States 261,888 47,244,640,256 IPv6 IPv6
AS47734 TELECOM-IT-SOLUTIONS-AS - Telecom IT Solutions SRL, RO Romania 256 65,536 IPv4 IPv4 IPv6 IPv6
AS38193 TWA-AS-AP - TRANSWORLD ASSOCIATES (PVT) LIMITED, PK Pakistan 25,344 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS35360 GARGUNET - Frederic Gargula, CH Switzerland 1,024 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS25091 IP-MAX - IP-Max SA, CH Switzerland 13,824 68,719,607,808 IPv4 IPv4 IPv6 IPv6
AS39120 CONVERGENZE-AS - Convergenze S.p.A., IT Italy 38,144 12,884,901,888 IPv4 IPv4 IPv6 IPv6
AS63927 RISE-HK - RISE ASIA TECHNOLOGY LIMITED, HK Hong Kong 2,304 141,733,920,768 IPv4 IPv4 IPv6 IPv6
AS24482 SGGS-AS-AP - SG.GS, SG Singapore 21,504 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS34177 CELESTE-AS - CELESTE SAS, FR France 193,536 42,949,672,960 IPv4 IPv4
AS52320 GlobeNet Cabos Submarinos Colombia, S.A.S., CO Colombia 4,096 8,589,934,592 IPv4 IPv4 IPv6 IPv6
AS200612 GulfBridgeInternational - Gulf Bridge International Inc., VG British Virgin Islands 3,072 34,360,197,120 IPv4 IPv4
AS200780 APPLIWAVE - APPLIWAVE SAS, FR France 20,224 38,654,705,664 IPv4 IPv4 IPv6 IPv6
AS62275 NHM - NHM - S.R.L., IT Italy 5,376 171,798,691,840 IPv6 IPv6
AS34019 HIVANE - Hivane Association, FR France 2,816 1,245,184 IPv4 IPv4 IPv6 IPv6
AS8309 SIPARTECH - SIPARTECH SAS, FR France 41,216 34,359,738,368 IPv4 IPv4
AS12552 IPO-EU - GlobalConnect AB, SE Sweden 580,096 274,879,021,056 IPv4 IPv4
AS20932 SIG-ST - Services Industriels de Geneve, CH Switzerland 9,472 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS48362 TKSWF-AS - Stadtwerke Feldkirch, AT Austria 7,680 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS59605 ZAINGP-AS - Zain Omantel International FZ-LLC, AE United Arab Emirates 6,400 458,752 IPv4 IPv4 IPv6 IPv6
AS1239 SPRINTLINK - Sprint, US United States 11,940,096 229,781,012,480 IPv4 IPv4 IPv6 IPv6
AS49544 i3Dnet - i3D.net B.V, NL Netherlands 97,792 375,543,758,848 IPv4 IPv4 IPv6 IPv6
AS213241 TECHIT - TECHIT.BE SRL, BE Belgium 3,584 131,072 IPv4 IPv4 IPv6 IPv6
AS33891 CORE-BACKBONE - Core-Backbone GmbH, DE Germany 0 0 IPv6 IPv6
AS6695 DECIX-AS - DE-CIX Management GmbH, DE Germany 0 0 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
IP Address Domain NUMs Domains
77.75.72.3 4 ask.seznam.cz
77.75.72.4 1 flirt.cz
77.75.72.5 1 email-reg.seznam.cz
77.75.72.9 1 kupi-agent.seznam.cz
77.75.72.12 4 sw-nuts.com
77.75.72.26 1 fulltextrobot-test-77-75-72-26.seznam.cz
77.75.72.48 2 pravoslavnacirkev.cz
77.75.72.60 1 fulltextdns-77-75-72-60.seznam.cz
77.75.72.61 1 fulltextdns-77-75-72-61.seznam.cz
77.75.72.62 1 fulltextdns-77-75-72-62.seznam.cz
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:         [email protected]
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:         [email protected]
phone:          +420 602 126 570
abuse-mailbox:  [email protected]
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