- Registered on
- 25 Apr 2006 (18 years old)
- Registered to
- cz.web4usro (ripe)
- [Transfer History]
- Network status
- Active, Allocated under RIPE
- Network type
- Content
- Prefixes Originated
- 5 IPv4, 3 IPv6
Upstreams
Rankings
| Prefix | Description | |
|---|---|---|
|
81.91.80.0/20 | Web4U s.r.o. |
|
|
81.91.80.0/21 | Web4U s.r.o. |
|
|
81.91.88.0/21 | Web4U s.r.o. |
|
|
185.14.224.0/23 | Web4U s.r.o. |
|
|
185.14.224.0/22 | Web4U s.r.o. |
|
|
2001:1568::/33 | Web4U s.r.o. |
|
|
2001:1568::/32 | Web4U s.r.o. |
|
|
2001:1568:8000::/33 | Web4U s.r.o. |
Network Policy
Click here to learn more about what this graph means and what makes up a network policy
Chart Display Options
Prefixes in selected policy
How are upstreams and downstreams calculated?
Upstreams
| ASN | Description | IPv4 | IPv6 | |
|---|---|---|---|---|
|
|
AS199803 | ComSource s.r.o. | ✔ | ✔ |
|
|
AS25248 | RADIOKOMUNIKACE a.s. | ✔ | ✔ |
|
AS6939 | Hurricane Electric LLC | ✘ | ✔ |
Peers
| ASN | Description | IPv4 | IPv6 | |
|---|---|---|---|---|
|
AS199803 | ComSource s.r.o. | ✔ | ✔ |
|
AS6939 | Hurricane Electric LLC | ✔ | ✔ |
|
AS25248 | RADIOKOMUNIKACE a.s. | ✔ | ✔ |
 |
AS5405 | Inter.link GmbH | ✔ | ✔ |
|
AS33891 | Core-Backbone GmbH | ✔ | ✘ |
|
AS24940 | Hetzner Online GmbH | ✔ | ✔ |
 |
AS8218 | Zayo Infrastructure France SA | ✔ | ✔ |
 |
AS6204 | INTERKVM HOST SRL | ✔ | ✔ |
 |
AS14840 | BR.DIGITAL | ✔ | ✘ |
 |
AS49544 | i3D.net B.V | ✔ | ✔ |
|
AS25291 | SysEleven GmbH | ✔ | ✔ |
 |
AS1764 | Next Layer Telecommunications | ✔ | ✔ |
 |
AS4455 | IX Reach Ltd | ✔ | ✘ |
 |
AS24482 | SG.GS | ✔ | ✔ |
|
AS40994 | Alwyzon (Hohl IT) | ✔ | ✔ |
|
AS50698 | TETA s.r.o. | ✔ | ✔ |
 |
AS9498 | Bharti Airtel Ltd. | ✔ | ✘ |
|
AS22356 | Durand do Brasil Ltda | ✔ | ✘ |
 |
AS57463 | NetIX Communications JSC | ✔ | ✘ |
 |
AS199524 | Gcore S.A. | ✔ | ✔ |
|
AS42473 | ANEXIA Internetdienstleistungs GmbH | ✔ | ✔ |
|
AS36236 | NetActuate, Inc | ✔ | ✔ |
|
AS15169 | Google LLC | ✔ | ✘ |
|
AS21430 | WIA spol. s.r.o. | ✔ | ✘ |
aut-num: AS39790 as-name: WEB4U org: ORG-WS296-RIPE remarks: remarks: =================================================================== remarks: ===[ UPSTREAM CONNECTIVITY ]======================================= remarks: =================================================================== remarks: remarks: ---[ Comsource ]--- import: from AS199803 accept ANY export: to AS199803 announce AS-WEB4U mp-import: afi ipv6.unicast from AS199803 accept ANY mp-export: afi ipv6.unicast to AS199803 announce AS-WEB4U remarks: ---[ CRA ]--- import: from AS25248 accept ANY export: to AS25248 announce AS-WEB4U mp-import: afi ipv6.unicast from AS25248 accept ANY mp-export: afi ipv6.unicast to AS25248 announce AS-WEB4U remarks: remarks: =================================================================== remarks: ===[ NIX.CZ IPV4 PEERINGS ]======================================== remarks: =================================================================== remarks: remarks: ---[ AS112 ]--- import: from AS112 accept ANY export: to AS112 announce AS-WEB4U remarks: ---[ CESNET2 ]--- import: from AS2852 accept ANY export: to AS2852 announce AS-WEB4U remarks: ---[ GTSCE ]--- import: from AS5588 accept ANY export: to AS5588 announce AS-WEB4U remarks: ---[ O2-CZECH-REPUBLIC ]--- import: from AS5610 accept ANY export: to AS5610 announce AS-WEB4U remarks: ---[ NIXCZ ]--- import: from AS6881 accept ANY export: to AS6881 announce AS-WEB4U remarks: ---[ HURRICANE ]--- import: from AS6939 accept ANY export: to AS6939 announce AS-WEB4U remarks: ---[ NFX_ZSPO ]--- import: from AS8251 accept ANY export: to AS8251 announce AS-WEB4U remarks: ---[ IPNet ]--- import: from AS8913 accept ANY export: to AS8913 announce AS-WEB4U remarks: ---[ ITSELF ]--- import: from AS12570 accept ANY export: to AS12570 announce AS-WEB4U remarks: ---[ CASABLANCA ]--- import: from AS15685 accept ANY export: to AS15685 announce AS-WEB4U remarks: ---[ HA-VEL ]--- import: from AS15935 accept ANY export: to AS15935 announce AS-WEB4U remarks: ---[ VODAFONE-CZ ]--- import: from AS16019 accept ANY export: to AS16019 announce AS-WEB4U remarks: ---[ NEJ ]--- import: from AS16246 accept ANY export: to AS16246 announce AS-WEB4U remarks: ---[ OVH ]--- import: from AS16276 accept ANY export: to AS16276 announce AS-WEB4U remarks: ---[ MGI ]--- import: from AS20723 accept ANY export: to AS20723 announce AS-WEB4U remarks: ---[ WIA ]--- import: from AS21430 accept ANY export: to AS21430 announce AS-WEB4U remarks: ---[ INTERNET-CZ ]--- import: from AS24806 accept ANY export: to AS24806 announce AS-WEB4U remarks: ---[ MASTER ]--- import: from AS24971 accept ANY export: to AS24971 announce AS-WEB4U remarks: ---[ CZNIC ]--- import: from AS25192 accept ANY export: to AS25192 announce AS-WEB4U remarks: ---[ GLOBE ]--- import: from AS25234 accept ANY export: to AS25234 announce AS-WEB4U remarks: ---[ BlueTone ]--- import: from AS25248 accept ANY export: to AS25248 announce AS-WEB4U remarks: ---[ INEXT-CZ ]--- import: from AS25424 accept ANY export: to AS25424 announce AS-WEB4U remarks: ---[ CDT ]--- import: from AS25512 accept ANY export: to AS25512 announce AS-WEB4U remarks: ---[ MSOFT ]--- import: from AS28972 accept ANY export: to AS28972 announce AS-WEB4U remarks: ---[ GITY ]--- import: from AS29086 accept ANY export: to AS29086 announce AS-WEB4U remarks: ---[ IGNUM ]--- import: from AS29134 accept ANY export: to AS29134 announce AS-WEB4U remarks: ---[ CZNIC-F-ROOT ]--- import: from AS30134 accept ANY export: to AS30134 announce AS-WEB4U remarks: ---[ NETBOX ]--- import: from AS31246 accept ANY export: to AS31246 announce AS-WEB4U remarks: ---[ MIRAMO ]--- import: from AS34080 accept ANY export: to AS34080 announce AS-WEB4U remarks: ---[ OXID ]--- import: from AS35214 accept ANY export: to AS35214 announce AS-WEB4U remarks: ---[ 2CONNECT ]--- import: from AS35236 accept ANY export: to AS35236 announce AS-WEB4U remarks: ---[ GREPNET ]--- import: from AS35361 accept ANY export: to AS35361 announce AS-WEB4U remarks: ---[ COOLHOUSING ]--- import: from AS35592 accept ANY export: to AS35592 announce AS-WEB4U remarks: ---[ TRESTEL-SK ]--- import: from AS38949 accept ANY export: to AS38949 announce AS-WEB4U remarks: ---[ CEZNET ]--- import: from AS39791 accept ANY export: to AS39791 announce AS-WEB4U remarks: ---[ OVANET ]--- import: from AS39817 accept ANY export: to AS39817 announce AS-WEB4U remarks: ---[ FREETEL-AS ]--- import: from AS41711 accept ANY export: to AS41711 announce AS-WEB4U remarks: ---[ KAORA ]--- import: from AS42000 accept ANY export: to AS42000 announce AS-WEB4U remarks: ---[ EDERA_Group ]--- import: from AS42306 accept ANY export: to AS42306 announce AS-WEB4U remarks: ---[ SEZNAM-CZ ]--- import: from AS43037 accept ANY export: to AS43037 announce AS-WEB4U remarks: ---[ ASNEW ]--- import: from AS43413 accept ANY export: to AS43413 announce AS-WEB4U remarks: ---[ VSHOSTING ]--- import: from AS43541 accept ANY export: to AS43541 announce AS-WEB4U remarks: ---[ METRONET ]--- import: from AS43708 accept ANY export: to AS43708 announce AS-WEB4U remarks: ---[ ISPAlliance ]--- import: from AS47232 accept ANY export: to AS47232 announce AS-WEB4U remarks: ---[ SUPRO ]--- import: from AS47868 accept ANY export: to AS47868 announce AS-WEB4U remarks: ---[ TechCom ]--- import: from AS61296 accept ANY export: to AS61296 announce AS-WEB4U remarks: ---[ M-NET ]--- import: from AS197197 accept ANY export: to AS197197 announce AS-WEB4U remarks: remarks: =================================================================== remarks: ===[ NIX.CZ IPV6 PEERINGS ]======================================== remarks: =================================================================== remarks: remarks: ---[ CESNET2 ]--- mp-import: afi ipv6.unicast from AS2852 accept ANY mp-export: afi ipv6.unicast to AS2852 announce AS-WEB4U remarks: ---[ GTSCE ]--- mp-import: afi ipv6.unicast from AS5588 accept ANY mp-export: afi ipv6.unicast to AS5588 announce AS-WEB4U remarks: ---[ NIXCZ ]--- mp-import: afi ipv6.unicast from AS6881 accept ANY mp-export: afi ipv6.unicast to AS6881 announce AS-WEB4U remarks: ---[ HURRICANE ]--- mp-import: afi ipv6.unicast from AS6939 accept ANY mp-export: afi ipv6.unicast to AS6939 announce AS-WEB4U remarks: ---[ CASABLANCA ]--- mp-import: afi ipv6.unicast from AS15685 accept ANY mp-export: afi ipv6.unicast to AS15685 announce AS-WEB4U remarks: ---[ NEJ ]--- mp-import: afi ipv6.unicast from AS16246 accept ANY mp-export: afi ipv6.unicast to AS16246 announce AS-WEB4U remarks: ---[ WIA ]--- mp-import: afi ipv6.unicast from AS21430 accept ANY mp-export: afi ipv6.unicast to AS21430 announce AS-WEB4U remarks: ---[ INTERNET-CZ ]--- mp-import: afi ipv6.unicast from AS24806 accept ANY mp-export: afi ipv6.unicast to AS24806 announce AS-WEB4U remarks: ---[ GLOBES ]--- mp-import: afi ipv6.unicast from AS25234 accept ANY mp-export: afi ipv6.unicast to AS25234 announce AS-WEB4U remarks: ---[ CDT ]--- mp-import: afi ipv6.unicast from AS25512 accept ANY mp-export: afi ipv6.unicast to AS25512 announce AS-WEB4U remarks: ---[ CZNIC-F-ROOT ]--- mp-import: afi ipv6.unicast from AS30134 accept ANY mp-export: afi ipv6.unicast to AS30134 announce AS-WEB4U remarks: ---[ 2CONNECT ]--- mp-import: afi ipv6.unicast from AS35236 accept ANY mp-export: afi ipv6.unicast to AS35236 announce AS-WEB4U remarks: ---[ CEZNET ]--- mp-import: afi ipv6.unicast from AS39791 accept ANY mp-export: afi ipv6.unicast to AS39791 announce AS-WEB4U remarks: ---[ M-NET ]--- mp-import: afi ipv6.unicast from AS197197 accept ANY mp-export: afi ipv6.unicast to AS197197 announce AS-WEB4U remarks: admin-c: DUMY-RIPE tech-c: DUMY-RIPE status: ASSIGNED notify: ripe@web4u.cz mnt-by: RIPE-NCC-END-MNT mnt-by: MNT-WEB4U created: 2006-04-25T12:37:01Z last-modified: 2025-02-14T09:04:22Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** organisation: ORG-WS296-RIPE org-name: Web4U s.r.o. country: CZ org-type: LIR address: Dummy address for ORG-WS296-RIPE e-mail: unread@ripe.net abuse-c: AR68991-RIPE mnt-ref: MNT-WEB4U mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-WEB4U created: 2022-09-20T07:29:12Z last-modified: 2022-09-20T07:29:13Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: ****************************Last Update: 2025-04-13T03:25:09Z UTC
Member of the following AS-SETs
| - | Member | ASN Count |
|---|---|---|
| RIPE | as-bluetone-cust | 47 |
| RIPE | as-casablanca-nix | 274 |
| RIPE | as-to2-nix-peer | 63 |
| LEVEL3 | as-level3-origins-eu | 0 |
| RIPE | as-transcz | 852 |
| RIPE | as24971:as-mai-nix-peer | 90455 |
| LEVEL3 | as-level3-origins-na | 0 |
| RADB | as-hurricanev6 | 17587 |
| RIPE | as-web4u | 1 |
| RIPE | as42000:as-nixcz-peerings | 80 |
| RIPE | as-cra | 47 |
| RIPE | as-43413_nt-nix | 69 |
| RIPE | as8508:as-sask-upc-in | 2521 |
| RIPE | as-cra-cznix | 47 |
| RIPE | as-casablanca-transit | 273 |
| RIPE | as8251:as-nix-peerings | 65 |
| RIPE | as-cra-sksix | 47 |
- PeeringDB AS-SET:
- AS-WEB4U
- Suggested Prefix Limits
-
IPv4: 2
IPv6: 1
Internet Exchange Points
| Name | IPv4 | IPv6 | Link Speed | |
|---|---|---|---|---|
  |
NIX.CZ | 91.210.16.90 | 2001:7f8:14::31:2 | 20 gbps |
|
NIX.CZ FENIX | 194.50.100.89 | 2001:7f8:14:5ec::31:1 | 10 gbps |
|
NIX.CZ FENIX | 194.50.100.90 | 2001:7f8:14:5ec::31:2 | 10 gbps |
 |
NIX.CZ | 91.210.16.89 | 2001:7f8:14::31:1 | n/a |