ASN AS47681 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS47681?

AS47681 is listed under O2 Czech Republic, a.s..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS47681 O2 Czech Republic, a.s.

ASN Lookup Tool

O2 Czech Republic, a.s. o2.cz

CZ 1 Routes

AS Data

AS47681

AS47681 – O2 Czech Republic, a.s.

AS Number	47681
AS Name	RIOMEDIA
Organization	O2 Czech Republic, a.s. (org-stan1-ripe)
Country	CZ
Website	o2.cz
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	ISP
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2008-07-31

ASN Intelligence API for production workflows

Use ASN data for AS47681 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
185.191.184.0/22	AS47681	O2 Czech Republic, a.s.	O2 Czech Republic, a.s.	1024

Raw Whois Response

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS47385 - AS47868'

as-block:       AS47385 - AS47868
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:        2024-07-08T14:18:47Z
last-modified:  2024-07-08T14:18:47Z
source:         RIPE

% Information related to 'AS47681'

% Abuse contact for 'AS47681' is 'abuse@o2.cz'

aut-num:        AS47681
org:            ORG-STaN1-RIPE
admin-c:        CZO2-RIPE
tech-c:         CZO2-RIPE
as-name:        RIOMEDIA
import:         from AS16246 accept ANY
export:         to AS16246 announce AS47681
admin-c:        KV10506-RIPE
tech-c:         RP12473-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         AS5610-MTN
created:        2008-07-31T16:33:13Z
last-modified:  2024-06-20T15:31:34Z
source:         RIPE

organisation:   ORG-STaN1-RIPE
org-name:       O2 Czech Republic, a.s.
country:        CZ
org-type:       LIR
address:        Za Brumlovkou 266/2
address:        140 22
address:        Praha 4 - Michle
address:        CZECH REPUBLIC
phone:          +420 2 71466184
fax-no:         +420 2 71464414
admin-c:        VAKO1-RIPE
admin-c:        MV96-RIPE
admin-c:        HVJI1-RIPE
tech-c:         CZO2-RIPE
abuse-c:        AR14410-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        AS5610-MTN
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS5610-MTN
created:        2004-04-17T11:04:17Z
last-modified:  2020-12-16T12:31:56Z
source:         RIPE # Filtered

role:           5610-Tech-and-Admin
address:        Za Brumlovkou 266/2
address:        Praha 4 - Michle, PSC 140 22
nic-hdl:        CZO2-RIPE
admin-c:        VAKO1-RIPE
admin-c:        MV96-RIPE
admin-c:        HVJI1-RIPE
tech-c:         VAKO1-RIPE
tech-c:         HVJI1-RIPE
abuse-mailbox:  abuse@o2.cz
org:            ORG-STaN1-RIPE
mnt-by:         AS5610-MTN
created:        2016-02-18T09:58:30Z
last-modified:  2018-04-20T10:44:21Z
source:         RIPE # Filtered

person:         Karel Vesely
address:        Nej.cz s.r.o.
address:        Kaplanova 2252/8
address:        Praha 4
address:        14800
address:        The Czech Republic
mnt-by:         KTVTRINEC-MNT
phone:          +420 558 998 123
remarks:        datova schranka: 66nkwcv
nic-hdl:        KV10506-RIPE
created:        2006-05-10T08:27:59Z
last-modified:  2019-01-03T07:43:56Z
source:         RIPE # Filtered

person:         Radomir Plasovsky
address:        Nej.cz s.r.o.
address:        Kaplanova 2252/8
address:        148 00 Praha 4 Chodov
address:        Czech Republic
phone:          +420 775 802 904
nic-hdl:        RP12473-RIPE
mnt-by:         MNT-RIOMEDIA
created:        2014-07-23T13:44:18Z
last-modified:  2019-03-14T16:14:58Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.121.2 (ABERDEEN)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS47385 - AS47868",
    "description" : [ "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" ],
    "date_created" : "2024-07-08",
    "date_updated" : "2024-07-08",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS47681",
    "as_name" : "RIOMEDIA",
    "status" : "ASSIGNED",
    "import" : [ "from AS16246 accept ANY" ],
    "export" : [ "to AS16246 announce AS47681" ],
    "organization" : "ORG-STaN1-RIPE",
    "admin_contacts" : [ "CZO2-RIPE", "KV10506-RIPE" ],
    "tech_contacts" : [ "CZO2-RIPE", "RP12473-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "AS5610-MTN" ],
    "date_created" : "2008-07-31",
    "date_updated" : "2024-06-20",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-STaN1-RIPE",
    "name" : "O2 Czech Republic, a.s.",
    "type" : "LIR",
    "address" : [ "Za Brumlovkou 266/2", "140 22", "Praha 4 - Michle", "CZECH REPUBLIC" ],
    "street" : "Za Brumlovkou",
    "city" : "Michle",
    "zip_code" : "140 22",
    "country" : [ "CZ" ],
    "phone" : [ "+420 2 71466184" ],
    "fax_no" : [ "+420 2 71464414" ],
    "admin_contacts" : [ "VAKO1-RIPE", "MV96-RIPE", "HVJI1-RIPE" ],
    "tech_contacts" : [ "CZO2-RIPE" ],
    "abuse_contacts" : [ "AR14410-RIPE" ],
    "mnt_ref" : [ "RIPE-NCC-HM-MNT", "AS5610-MTN" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "AS5610-MTN" ],
    "date_created" : "2004-04-17",
    "date_updated" : "2020-12-16",
    "source" : "RIPE",
    "addressCountry" : "CZECH REPUBLIC"
  },
  "administrative_contacts" : [ {
    "handle" : "CZO2-RIPE",
    "name" : "5610-Tech-and-Admin",
    "address" : [ "Za Brumlovkou 266/2", "Praha 4 - Michle, PSC 140 22" ],
    "street" : "Za Brumlovkou",
    "city" : "Praha 4",
    "abuse_mailbox" : [ "abuse@o2.cz" ],
    "organizations" : [ "ORG-STaN1-RIPE" ],
    "admin_contacts" : [ "VAKO1-RIPE", "MV96-RIPE", "HVJI1-RIPE" ],
    "tech_contacts" : [ "VAKO1-RIPE", "HVJI1-RIPE" ],
    "mnt_by" : [ "AS5610-MTN" ],
    "date_created" : "2016-02-18",
    "date_updated" : "2018-04-20",
    "source" : "RIPE"
  }, {
    "handle" : "KV10506-RIPE",
    "name" : "Karel Vesely",
    "address" : [ "Nej.cz s.r.o.", "Kaplanova 2252/8", "Praha 4", "14800", "The Czech Republic" ],
    "street" : "Kaplanova",
    "city" : "The",
    "zip_code" : "14800",
    "country" : "CZECH REPUBLIC",
    "phone" : [ "+420 558 998 123" ],
    "remarks" : [ "datova schranka: 66nkwcv" ],
    "mnt_by" : [ "KTVTRINEC-MNT" ],
    "date_created" : "2006-05-10",
    "date_updated" : "2019-01-03",
    "source" : "RIPE",
    "addressCountry" : "CZECH REPUBLIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "CZO2-RIPE",
    "name" : "5610-Tech-and-Admin",
    "address" : [ "Za Brumlovkou 266/2", "Praha 4 - Michle, PSC 140 22" ],
    "street" : "Za Brumlovkou",
    "city" : "Praha 4",
    "abuse_mailbox" : [ "abuse@o2.cz" ],
    "organizations" : [ "ORG-STaN1-RIPE" ],
    "admin_contacts" : [ "VAKO1-RIPE", "MV96-RIPE", "HVJI1-RIPE" ],
    "tech_contacts" : [ "VAKO1-RIPE", "HVJI1-RIPE" ],
    "mnt_by" : [ "AS5610-MTN" ],
    "date_created" : "2016-02-18",
    "date_updated" : "2018-04-20",
    "source" : "RIPE"
  }, {
    "handle" : "RP12473-RIPE",
    "name" : "Radomir Plasovsky",
    "address" : [ "Nej.cz s.r.o.", "Kaplanova 2252/8", "148 00 Praha 4 Chodov", "Czech Republic" ],
    "street" : "Kaplanova",
    "city" : "Chodov",
    "zip_code" : "148 00",
    "country" : "CZECH REPUBLIC",
    "phone" : [ "+420 775 802 904" ],
    "mnt_by" : [ "MNT-RIOMEDIA" ],
    "date_created" : "2014-07-23",
    "date_updated" : "2019-03-14",
    "source" : "RIPE",
    "addressCountry" : "CZECH REPUBLIC"
  } ]
}

Peers

AS Number	Description	Country
AS16246	O2 Czech Republic, a.s.	CZ
AS16246	NEJ.cz s.r.o	CZ

Upstreams

AS Number	Description	Country
AS16246	NEJ.cz s.r.o	CZ