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

ripe

RegDate

Updated

2023-06-14T15:02:10Z

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
IRR Valid
DC-Kokura 65536
2a02:598:b::/48
IRR Valid
DC-Nagano-future 65536
2a02:598:3333::/48
ROA Signed and Valid 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
AS12552 IPO-EU - GlobalConnect AB, SE Sweden 578,048 274,878,955,520 IPv4 IPv4 IPv6 IPv6
AS56987 AS-ABACLOUDA - ABACLOUDA SAS, FR France 768 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS63927 RISE-HK - RISE ASIA TECHNOLOGY LIMITED, HK Hong Kong 2,816 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS200780 APPLIWAVE - APPLIWAVE SAS, FR France 19,456 73,014,444,032 IPv6 IPv6
AS8218 NEO-ASN - Zayo Infrastructure France SA, FR France 47,616 12,884,967,424 IPv4 IPv4 IPv6 IPv6
AS14840 COMMCORP COMUNICACOES LTDA, BR Brazil 62,464 15,083,634,688 IPv4 IPv4 IPv6 IPv6
AS34224 NETERRA-AS - Neterra Ltd., BG Bulgaria 44,800 4,294,967,296 IPv4 IPv4
AS328832 Network-Platforms-International - Network Platforms (PTY) LTD, ZA South Africa 0 0 IPv4 IPv4
AS132337 ANSPL-AS-AP - ALPHA NETWORKS SOLUTION PTE. LTD., SG Singapore 7,936 4,294,967,296 IPv4 IPv4
AS8529 OMANTEL-AS - Oman Telecommunications Company (S.A.O.G), OM Oman 15,360 0 IPv6 IPv6
AS33891 CORE-BACKBONE - Core-Backbone GmbH, DE Germany 0 0 IPv6 IPv6
AS12779 ITGATE - IT.Gate S.p.A., IT Italy 45,568 42,949,804,032 IPv4 IPv4 IPv6 IPv6
AS25091 IP-MAX - IP-Max SA, CH Switzerland 12,032 34,359,803,904 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 236,544 30,087,249,920 IPv4 IPv4
AS6057 Administracion Nacional de Telecomunicaciones, UY Uruguay 2,164,224 68,719,476,736 IPv4 IPv4 IPv6 IPv6
AS18106 VIEWQWEST-SG-AP - Viewqwest Pte Ltd, SG Singapore 53,248 13,153,337,344 IPv4 IPv4 IPv6 IPv6
AS40994 Alwyzon - Hohl IT e.U., AT Austria 2,560 4,295,032,832 IPv4 IPv4 IPv6 IPv6
AS47734 TELECOM-IT-SOLUTIONS-AS - Telecom IT Solutions SRL, RO Romania 0 0 IPv4 IPv4
AS263009 FORTE TELECOM LTDA., BR Brazil 9,216 4,294,967,296 IPv6 IPv6
AS5713 SAIX-NET - Telkom SA Ltd., ZA South Africa 1,991,424 17,600,775,979,008 IPv4 IPv4 IPv6 IPv6
AS35360 GARGUNET - Frederic Gargula, CH Switzerland 1,024 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS38880 M21-AS-AP - Micron21 Datacentre Pty Ltd, AU Australia 30,976 4,295,163,904 IPv4 IPv4
AS1239 SPRINTLINK - Sprint, US United States 12,166,144 212,601,143,296 IPv4 IPv4 IPv6 IPv6
AS36351 SOFTLAYER - SoftLayer Technologies Inc., US United States 4,359,168 39,668,088,832 IPv4 IPv4
AS48362 TKSWF-AS - Stadtwerke Feldkirch, AT Austria 7,680 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS137409 GSLNETWORKS-AS-AP - GSL Networks Pty LTD, AU Australia 49,664 77,330,120,704 IPv4 IPv4 IPv6 IPv6
AS1828 UNITAS - Unitas Global LLC, US United States 229,376 47,244,640,256 IPv6 IPv6
AS47147 AS-ANX - ANEXIA Internetdienstleistungs GmbH, AT Austria 1,536 196,608 IPv4 IPv4 IPv6 IPv6
AS52320 GlobeNet Cabos Submarinos Colombia, S.A.S., CO Colombia 4,096 8,589,934,592 IPv4 IPv4 IPv6 IPv6
AS8447 A1TELEKOM-AT - A1 Telekom Austria AG, AT Austria 2,831,104 137,439,412,224 IPv6 IPv6
AS6695 DECIX-AS - DE-CIX Management GmbH, DE Germany 0 0 IPv4 IPv4 IPv6 IPv6
AS13237 LAMBDANET-AS - euNetworks GmbH, DE Germany 562,688 111,669,149,696 IPv4 IPv4
AS20932 SIG-ST - Services Industriels de Geneve, CH Switzerland 9,472 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS34177 CELESTE-AS - CELESTE SAS, FR France 181,760 42,949,672,960 IPv4 IPv4
AS38193 TWA-AS-AP - TRANSWORLD ASSOCIATES (PVT) LIMITED, PK Pakistan 25,088 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS22356 Durand do Brasil Ltda, BR Brazil 29,440 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS31133 MF-MGSM-AS - PJSC MegaFon, RU Russian Federation 784,128 638,058,496 IPv4 IPv4
AS49605 DTS-AS - Digital Telecommunication Services S.r.l., IT Italy 9,472 38,654,705,664 IPv4 IPv4
AS56630 MELBICOM-EU-AS - Melbikomas UAB, LT Lithuania 42,752 7,268,466,688 IPv4 IPv4
AS5398 AS5398 - AS5398 SA, CH Switzerland 17,152 42,949,672,960 IPv4 IPv4
AS15547 NETPLUS - netplus.ch SA, CH Switzerland 134,144 42,949,672,960 IPv4 IPv4
AS34019 HIVANE, FR France 2,816 1,245,184 IPv4 IPv4 IPv6 IPv6
AS39351 ESAB-AS - 31173 Services AB, SE Sweden 8,448 4,295,753,728 IPv4 IPv4
AS57463 NetIX - NetIX Communications JSC, BG Bulgaria 256 0 IPv4 IPv4 IPv6 IPv6
AS200612 GulfBridgeInternational - Gulf Bridge International Inc., VG British Virgin Islands 3,072 34,360,197,120 IPv4 IPv4
AS9050 RTD - ORANGE ROMANIA COMMUNICATION S.A, RO Romania 1,496,576 4,294,967,296 IPv4 IPv4
AS13058 serve-u-AS - serve-u - Buchholz und Suenderhauf GbR, DE Germany 1,792 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS16347 INHERENT - ADISTA SAS, FR France 190,720 98,784,772,096 IPv4 IPv4
AS29208 QUANTCOM-AS - Quantcom, a.s., CZ Czech 254,976 12,884,901,888 IPv4 IPv4 IPv6 IPv6
AS39120 CONVERGENZE-AS - Convergenze S.p.A., IT Italy 36,096 12,884,901,888 IPv4 IPv4 IPv6 IPv6
AS5610 O2-CZECH-REPUBLIC - O2 Czech Republic, a.s., CZ Czech 1,544,192 47,278,260,224 IPv4 IPv4 IPv6 IPv6
AS35280 F5 - F5 Networks SARL, FR France 50,432 81,604,378,624 IPv4 IPv4 IPv6 IPv6
AS53427 TGLOBAL-NETWORKS - TGLOBAL NETWORKS, US United States 512 16,777,216 IPv4 IPv4 IPv6 IPv6
AS58299 OPENFACTORY-AS - Openfactory GmbH, CH Switzerland 3,328 17,179,934,720 IPv4 IPv4 IPv6 IPv6
AS1267 ASN-WINDTRE - WIND TRE S.P.A., IT Italy 6,567,680 2,233,382,993,920 IPv6 IPv6
AS6939 HURRICANE - Hurricane Electric LLC, US United States 507,648 282,631,675,772,928 IPv4 IPv4 IPv6 IPv6
AS15605 CONNESI - Connesi s.p.a., IT Italy 21,504 17,179,869,184 IPv4 IPv4 IPv6 IPv6
AS20811 BRENNERCOM-AS - Brennercom S.p.A., IT Italy 69,632 103,079,215,104 IPv4 IPv4 IPv6 IPv6
AS51184 FONIRA - Fonira Telekom GmbH, AT Austria 12,800 111,669,936,128 IPv4 IPv4 IPv6 IPv6
AS34927 iFog-GmbH - iFog GmbH, CH Switzerland 4,096 157,024,256 IPv6 IPv6
AS59890 Kabel-TV-Lampert - Kabel-TV Lampert GmbH & Co KG, AT Austria 13,312 34,359,738,368 IPv4 IPv4 IPv6 IPv6
AS559 SWITCH, CH Switzerland 2,183,936 176,093,790,208 IPv4 IPv4 IPv6 IPv6
AS17557 PKTELECOM-AS-PK - Pakistan Telecommuication company limited, PK Pakistan 3,856,728 4,295,032,832 IPv4 IPv4
AS24482 SGGS-AS-AP - SG.GS, SG Singapore 21,504 4,294,967,296 IPv4 IPv4 IPv6 IPv6
AS29075 IELO - IELO-LIAZO SERVICES SAS, FR France 42,240 107,374,182,400 IPv4 IPv4 IPv6 IPv6
AS59605 ZAINGP-AS - MENA LEVANT W.L.L, BH Bahrain 6,144 524,288 IPv4 IPv4 IPv6 IPv6
AS9002 RETN-AS - RETN Limited, GB United Kingdom 33,024 4,294,967,296 IPv6 IPv6
AS8309 SIPARTECH - SIPARTECH SAS, FR France 41,216 34,359,738,368 IPv4 IPv4
AS45352 IPSERVERONE-AS-AP - IP ServerOne Solutions Sdn Bhd, MY Malaysia 39,424 4,027,645,952 IPv4 IPv4
AS47692 NESSUS - Nessus GmbH, AT Austria 34,048 34,360,066,048 IPv4 IPv4 IPv6 IPv6
AS49544 i3Dnet - i3D.net B.V, NL Netherlands 101,376 341,184,020,480 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 FENIX 194.50.100.194 2001:7f8:14:5ec::36:1 100 Gbps 2020-02-19 04:07:54
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 FENIX 194.50.100.195 2001:7f8:14:5ec::36:2 100 Gbps 2020-02-19 04:07:54
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

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 - AS44168
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:        2023-06-14T15:02:10Z
last-modified:  2023-06-14T15:02:10Z
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