// WEB4U // WEB4U

AS Name: WEB4U

Organization: ORG-WS296-RIPE

Registry: RIPE

Imports from (48)

AS199803 AS25248 AS112 AS2852 AS5588 AS5610 AS6881 AS6939 AS8251 AS8913 AS12570 AS15685 AS15935 AS16019 AS16246 AS16276 AS20723 AS21430 AS24806 AS24971 AS25192 AS25234 AS25424 AS25512 AS28972 AS29086 AS29134 AS30134 AS31246 AS34080 AS35214 AS35236 AS35361 AS35592 AS38949 AS39791 AS39817 AS41711 AS42000 AS42306 AS43037 AS43413 AS43541 AS43708 AS47232 AS47868 AS61296 AS197197

Exports to (49)

AS199803 AS-WEB4U AS25248 AS112 AS2852 AS5588 AS5610 AS6881 AS6939 AS8251 AS8913 AS12570 AS15685 AS15935 AS16019 AS16246 AS16276 AS20723 AS21430 AS24806 AS24971 AS25192 AS25234 AS25424 AS25512 AS28972 AS29086 AS29134 AS30134 AS31246 AS34080 AS35214 AS35236 AS35361 AS35592 AS38949 AS39791 AS39817 AS41711 AS42000 AS42306 AS43037 AS43413 AS43541 AS43708 AS47232 AS47868 AS61296 AS197197

⚠️ CIRCL BGP Security Rank: 0.0308% (position 7489)

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:
import:         from AS112 accept ANY
import:         from AS13150 accept ANY
import:         from AS13335 accept ANY
import:         from AS15169 accept ANY
import:         from AS15685 accept ANY
import:         from AS15935 accept ANY
import:         from AS16276 accept ANY
import:         from AS16509 accept ANY
import:         from AS20723 accept ANY
import:         from AS21430 accept ANY
import:         from AS24806 accept ANY
import:         from AS24971 accept ANY
import:         from AS25192 accept ANY
import:         from AS25234 accept ANY
import:         from AS25248 accept ANY
import:         from AS25424 accept ANY
import:         from AS25512 accept ANY
import:         from AS2852 accept ANY
import:         from AS29086 accept ANY
import:         from AS29134 accept ANY
import:         from AS29208 accept ANY
import:         from AS34080 accept ANY
import:         from AS35236 accept ANY
import:         from AS35592 accept ANY
import:         from AS38949 accept ANY
import:         from AS39791 accept ANY
import:         from AS41711 accept ANY
import:         from AS42000 accept ANY
import:         from AS43037 accept ANY
import:         from AS43413 accept ANY
import:         from AS43541 accept ANY
import:         from AS47232 accept ANY
import:         from AS47868 accept ANY
import:         from AS49544 accept ANY
import:         from AS61296 accept ANY
import:         from AS6855 accept ANY
import:         from AS6881 accept ANY
import:         from AS6939 accept ANY
import:         from AS8075 accept ANY
import:         from AS8251 accept ANY
import:         from AS8913 accept ANY
export:         to AS112 announce AS-WEB4U
export:         to AS13150 announce AS-WEB4U
export:         to AS13335 announce AS-WEB4U
export:         to AS15169 announce AS-WEB4U
export:         to AS15685 announce AS-WEB4U
export:         to AS15935 announce AS-WEB4U
export:         to AS16276 announce AS-WEB4U
export:         to AS16509 announce AS-WEB4U
export:         to AS20723 announce AS-WEB4U
export:         to AS21430 announce AS-WEB4U
export:         to AS24806 announce AS-WEB4U
export:         to AS24971 announce AS-WEB4U
export:         to AS25192 announce AS-WEB4U
export:         to AS25234 announce AS-WEB4U
export:         to AS25248 announce AS-WEB4U
export:         to AS25424 announce AS-WEB4U
export:         to AS25512 announce AS-WEB4U
export:         to AS2852 announce AS-WEB4U
export:         to AS29086 announce AS-WEB4U
export:         to AS29134 announce AS-WEB4U
export:         to AS29208 announce AS-WEB4U
export:         to AS34080 announce AS-WEB4U
export:         to AS35236 announce AS-WEB4U
export:         to AS35592 announce AS-WEB4U
export:         to AS38949 announce AS-WEB4U
export:         to AS39791 announce AS-WEB4U
export:         to AS41711 announce AS-WEB4U
export:         to AS42000 announce AS-WEB4U
export:         to AS43037 announce AS-WEB4U
export:         to AS43413 announce AS-WEB4U
export:         to AS43541 announce AS-WEB4U
export:         to AS47232 announce AS-WEB4U
export:         to AS47868 announce AS-WEB4U
export:         to AS49544 announce AS-WEB4U
export:         to AS61296 announce AS-WEB4U
export:         to AS6855 announce AS-WEB4U
export:         to AS6881 announce AS-WEB4U
export:         to AS6939 announce AS-WEB4U
export:         to AS8075 announce AS-WEB4U
export:         to AS8251 announce AS-WEB4U
export:         to AS8913 announce AS-WEB4U
remarks:
remarks:        ===================================================================
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:  2026-07-22T12:11:38Z
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:        ****************************

Direct Membership

Macros that directly list AS39790 as a member:

AS-WEB4U(1 members)
AS-CASABLANCA-TRANSIT(29 members)
AS-CASABLANCA-NIX(31 members)
AS-BLUETONE-CUST(33 members)
AS-CRA(33 members)
AS-CRA-CZNIX(33 members)
AS8251:AS-NIX-PEERINGS(49 members)
AS-TO2-NIX-PEER(63 members)
AS-TRANSCZ(70 members)
AS24971:AS-MAI-NIX-PEER(74 members)
AS42000:AS-NIXCZ-PEERINGS(80 members)
AS8508:AS-SASK-UPC-IN(510 members)
AS-LEVEL3-ORIGINS-EU(7728 members)
AS-HURRICANEV6(20402 members)

Expanded Membership

All macros containing AS39790 (directly or via nested macros): 364

Show 100 macros

AS-WEB4U(1 ASNs)
AS8251:AS-NIX-PEERINGS(49 ASNs)
AS-BLUETONE-CUST(52 ASNs)
AS-CRA(52 ASNs)
AS-CRA-CZNIX(52 ASNs)
AS-CASABLANCA-TRANSIT(61 ASNs)
AS-CASABLANCA-NIX(62 ASNs)
AS-TO2-NIX-PEER(63 ASNs)
AS42000:AS-NIXCZ-PEERINGS(80 ASNs)
AS-KAORA-TRANSIT(176 ASNs)
AS-DIALTELECOM(183 ASNs)
AS-DIALTELECOM-SIX(186 ASNs)
AS-KAORA-PEERING(204 ASNs)
AS-COMSOURCE(255 ASNs)
AS-TRANSCZ(261 ASNs)
AS-GTSCZ(388 ASNs)
AS-SLOVAK(406 ASNs)
AS8508:AS-SASK-UPC-IN(509 ASNs)
AS-SUPERNETWORK(515 ASNs)
AS-GTS-CE(1,469 ASNs)
AS-GBXSCUST-FULL(1,996 ASNs)
AS-TDCNETEU(1,998 ASNs)
AS-GBXSCUST(2,370 ASNs)
AS-GBXS(2,661 ASNs)
AS-TDCNET(2,713 ASNs)
AS-TDCNET-IPV6(2,713 ASNs)
AS-BT6(2,741 ASNs)
AS-BELBONETOPEERS(3,364 ASNs)
AS-BELGACOM(3,364 ASNs)
AS-LEVEL3-IPV6(3,475 ASNs)
AS-SOX-SRB(3,643 ASNs)
AS-BALKAN-IX-V6(3,646 ASNs)
AS-ASTRAL(3,700 ASNs)
AS-MOBIFON(3,859 ASNs)
AS702:AS-HU-CUSTOMER(3,863 ASNs)
AS-CECOMCZCUST-TRANSIT(3,998 ASNs)
AS-CECOMCZ-TRANSIT(4,005 ASNs)
AS34565:AS-TURKIX-PARTNERS(4,030 ASNs)
AS-REALROUTE(4,267 ASNs)
AS-VODAFONE(4,645 ASNs)
AS-ARCOR(5,067 ASNs)
AS-ARCORGLOBAL(5,069 ASNs)
AS41073:AS-IPV4-INEX-PEERS(5,208 ASNs)
AS-RTD(6,186 ASNs)
AS-ORANGERO(6,233 ASNs)
AS-TDATANETEU(6,531 ASNs)
AS-TDATANET(6,679 ASNs)
AS-LEVEL3-ORIGINS-EU(7,728 ASNs)
AS-LEVELTHREEEU(7,728 ASNs)
AS-UUNETEUUK(8,356 ASNs)
AS702:AS-UK-CUSTOMER(8,356 ASNs)
AS-VODAFONE-DE(14,246 ASNs)
AS41073:AS-INEX-PEERS(14,843 ASNs)
AS-MAGYARTELEKOM(17,357 ASNs)
AS-MATAV(17,357 ASNs)
AS198792:AS-PEER-AMSIX-V4(19,486 ASNs)
AS-OCCAID6(19,611 ASNs)
AS-OCCAID6-CUSTOMERS(19,611 ASNs)
AS-HURRICANEV6(20,402 ASNs)
AS-SEECIX-V6(20,691 ASNs)
AS56858:AS-SEECIX-V6(20,691 ASNs)
AS-DECIX-RIC-V6(20,721 ASNs)
AS393752:AS-DECIX-RIC-V6(20,721 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-TIX(21,568 ASNs)
AS-LITIX-V6(22,027 ASNs)
AS-T-CIX-V6(22,807 ASNs)
AS-BALT-IX-V6(23,949 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-CIXP(24,509 ASNs)
AS3491:AS-CUSTOMERS-NA(25,092 ASNs)
AS-FIXO-V6(25,776 ASNs)
AS-DECIX-BCN-V6(28,476 ASNs)
AS57802:AS-DECIX-BCN-V6(28,476 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-SWISS-IX(28,564 ASNs)
AS-FIXO(29,811 ASNs)
AS209861:AS-PEERS(29,811 ASNs)
AS55176:AS-MEMBERS(29,827 ASNs)
AS-IXPLAY(30,348 ASNs)
AS-STARTNIX-EU(30,348 ASNs)
AS-DECIX-ORD-V6(31,479 ASNs)
AS62760:AS-DECIX-ORD-V6(31,479 ASNs)
AS-DECIX-LIS-V6(32,541 ASNs)
AS43729:AS-DECIX-LIS-V6(32,541 ASNs)
AS30781:AS-JAGUAR-PEERING-V6-EQUINIX-PA(34,681 ASNs)
AS-T-CIX(36,150 ASNs)
AS-MONIX-PEERS(37,180 ASNs)
AS-TAHOEIX-MEMBERS(37,370 ASNs)
AS-MBIX-RS-MEMBERS(37,425 ASNs)
AS-ECRCCUSTDE(37,596 ASNs)
AS-ECRC(37,597 ASNs)
AS-ECRCDE(37,597 ASNs)
AS-ECRCLINX(37,597 ASNs)
AS-CWE(37,716 ASNs)
AS-ONIX(37,766 ASNs)
AS211776:AS-CRAFTBYTE-UPSTREAMS(37,882 ASNs)
AS-UUNETPIPEXLINX(38,009 ASNs)
AS-LSC-IXP-RS(38,302 ASNs)
AS-LSC-IXP(38,312 ASNs)
AS-VSIX-RS(38,411 ASNs)
AS207800:AS-RTIX-SET(39,194 ASNs)
AS33495:AS-MEMBERS(39,231 ASNs)
... and 264 more

Upstream AS Paths

37 unique paths, avg length 2.3

AS Looking Glass

Upstream paths (matching graph above)

AS2497 → AS6939 → AS39790
AS150000 → AS18187 → AS6939 → AS39790
AS150000 → AS6939 → AS39790
AS2497 → AS1299 → AS199803 → AS39790
AS33185 → AS1299 → AS199803 → AS39790
AS140627 → AS1299 → AS199803 → AS39790
AS7594 → AS3356 → AS199803 → AS39790
AS199524 → AS3356 → AS199803 → AS39790
AS2497 → AS6939 → AS199803 → AS39790
AS8220 → AS6939 → AS199803 → AS39790
AS150000 → AS18187 → AS6939 → AS199803 → AS39790
AS33185 → AS6939 → AS199803 → AS39790
AS38001 → AS6939 → AS199803 → AS39790
AS150000 → AS6939 → AS199803 → AS39790
AS24482 → AS199803 → AS39790
AS32590 → AS199803 → AS39790
AS36236 → AS199803 → AS39790
AS49544 → AS199803 → AS39790
AS53062 → AS199803 → AS39790
AS266213 → AS262355 → AS199803 → AS39790

All 37 Upstream Paths

Complete list of all observed paths

AS6939 → AS39790
AS955 → AS6939 → AS39790
AS2497 → AS6939 → AS39790
AS8220 → AS6939 → AS39790
AS150000 → AS18187 → AS6939 → AS39790
AS33185 → AS6939 → AS39790
AS38001 → AS6939 → AS39790
AS148968 → AS6939 → AS39790
AS150000 → AS6939 → AS39790
AS267613 → AS13786 → AS22356 → AS39790
AS24482 → AS39790
AS2497 → AS1299 → AS25248 → AS39790
AS140627 → AS1299 → AS25248 → AS39790
AS32590 → AS39790
AS36236 → AS39790
AS49544 → AS39790
AS53062 → AS39790
AS1299 → AS199803 → AS39790
AS2497 → AS1299 → AS199803 → AS39790
AS33185 → AS1299 → AS199803 → AS39790
AS140627 → AS1299 → AS199803 → AS39790
AS7594 → AS3356 → AS199803 → AS39790
AS199524 → AS3356 → AS199803 → AS39790
AS6939 → AS199803 → AS39790
AS2497 → AS6939 → AS199803 → AS39790
AS8220 → AS6939 → AS199803 → AS39790
AS150000 → AS18187 → AS6939 → AS199803 → AS39790
AS33185 → AS6939 → AS199803 → AS39790
AS38001 → AS6939 → AS199803 → AS39790
AS150000 → AS6939 → AS199803 → AS39790
AS24482 → AS199803 → AS39790
AS32590 → AS199803 → AS39790
AS36236 → AS199803 → AS39790
AS49544 → AS199803 → AS39790
AS53062 → AS199803 → AS39790
AS266213 → AS262355 → AS199803 → AS39790
AS266213 → AS262355 → AS39790

AS39790 IPv4 Address Subnets (5)

81.91.80.0/20	🇨🇿 CZ	Web4U	WEB4U
81.91.80.0/21	🇨🇿 CZ		WEB4U
81.91.88.0/21	🇨🇿 CZ		WEB4U
185.14.224.0/22	🇨🇿 CZ	Web4U	WEB4U
185.14.224.0/23	🇨🇿 CZ		WEB4U