AS39904 MERIT GROUP a.s

Czechia MERIT-AS RIPE 3 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

4,096

IPv6 /48 networks

65,536

RPKI

4 valid0 no ROA

Peers and downstreams

Holder

AS name: MERIT-AS
Description: MERIT GROUP a.s. Brezinova 136/7 Olomouc 772 00 Czech Republic
Organisation: MERIT GROUP a.s
Registered in: Olomouc, Czechia
Abuse contact: abuse@merit.cz
Assigned: 2006-05-11
Registered: 2006-05-12
Record last changed: 2025-06-26 12:52 UTC

195.189.0.0/22 46.227.168.0/21 91.215.12.0/22

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 90/100

pass	Prefixes covered by valid ROAs 4 of 4 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 1 IPv6 prefix.	15/15
pass	More than one upstream 3 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@merit.cz is published.	15/15
fail	Publishes a geofeed No geofeed found. Without one, location databases have to guess.	0/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
pass	Registry record maintained Last changed 2025-06-26.	5/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/39904"><img src="https://ip-fd.net/badge/asn/39904/health.svg" alt="AS39904 network health on IP-FD.net"></a>

Markdown

[![AS39904 network health](https://ip-fd.net/badge/asn/39904/health.svg)](https://ip-fd.net/asn/39904)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 22:25 UTC	Relationship changed	AS8218	upstream to peer
2026-10-04 22:25 UTC	Relationship changed	AS6663	upstream to peer
2026-10-04 22:25 UTC	Relationship changed	AS6204	upstream to peer
2026-10-04 22:25 UTC	Relationship changed	AS4455	upstream to peer
2026-10-04 22:25 UTC	Relationship changed	AS44306	upstream to peer
2026-10-04 22:25 UTC	Relationship changed	AS264409	upstream to peer
2026-10-04 22:25 UTC	Relationship changed	AS263444	upstream to peer
2026-10-04 22:25 UTC	Relationship changed	AS22356	upstream to peer
2026-10-04 22:25 UTC	Relationship changed	AS21215	upstream to peer
2026-10-04 22:25 UTC	Relationship changed	AS1764	upstream to peer
2026-10-04 22:25 UTC	Relationship changed	AS14840	upstream to peer

WHOIS

aut-num:        AS39904
as-name:        MERIT-AS
descr:          MERIT GROUP a.s.
descr:          Brezinova 136/7
descr:          Olomouc
descr:          772 00
descr:          Czech Republic
descr:          www.meritgroup.cz / www.meritnet.cz
org:            ORG-MGa7-RIPE
remarks:        -----------------------------------------
remarks:        | Upstream IPv4 |
remarks:        -----------------------------------------
remarks:        
remarks:        > -- T-Mobile (GTS)
remarks:        
remarks:        > -- Vodafone (SLOANE) (UPC)
remarks:        
remarks:        > -- KAORA
remarks:        from AS42000 185.99.68.140 at 185.99.68.141 action pref=90; accept ANY AND NOT AS39904:fltr-bogons AND NOT {0.0.0.0/0};
remarks:        to AS42000 185.99.68.140 at 185.99.68.141 announce AS-MERIT-UPSTREAM
remarks:        
remarks:        -----------------------------------------
remarks:        | Upstream IPv6 |
remarks:        -----------------------------------------
remarks:        
remarks:        > -- T-Mobile (GTS)
remarks:        
remarks:        > -- Vodafone (SLOANE) (UPC)
remarks:        
remarks:        > -- HURRICANE
remarks:        
remarks:        > -- KAORA
remarks:        afi ipv6.unicast from AS42000 2A00:1790:1::3509:FFFD at 2A00:1790:1::3509:FFFE action pref=90; accept ANY AND NOT AS39904:fltr-bogons-v6 AND NOT {::/0};
remarks:        afi ipv6.unicast to AS42000 2A00:1790:1::3509:FFFD at 2A00:1790:1::3509:FFFE announce AS-MERIT-UPSTREAM
remarks:        
remarks:        -----------------------------------------
remarks:        | NIX.CZ route servers IPv4 |
remarks:        -----------------------------------------
remarks:        
remarks:        > -- Route Server
remarks:        
remarks:        
remarks:        -----------------------------------------
remarks:        | NIX.CZ direct peering IPv4 |
remarks:        -----------------------------------------
remarks:        
remarks:        > -- AS112 Project
remarks:        
remarks:        
remarks:        > -- NIX.CZ
remarks:        
remarks:        
remarks:        > -- Casablanca INT
remarks:        
remarks:        > -- CESNET
remarks:        
remarks:        
remarks:        > -- MASTER INTERNET
remarks:        
remarks:        > -- 2 CONNECT
remarks:        
remarks:        > -- WIA
remarks:        
remarks:        
remarks:        > -- MGI
remarks:        
remarks:        > -- AKAMAI
remarks:        
remarks:        > -- FORPSI/INTERNET CZ
remarks:        
remarks:        > -- MICROSOFT
remarks:        
remarks:        > -- HURRICANE
remarks:        
remarks:        > -- HA-VEL
remarks:        
remarks:        > -- TECHCOM
remarks:        
remarks:        > -- BACKBONE
remarks:        
remarks:        
remarks:        > -- GOOGLE
remarks:        
remarks:        
remarks:        > -- TWITCH.TV
remarks:        
remarks:        
remarks:        > -- VERISIGN
remarks:        
remarks:        
remarks:        > -- VALVE
remarks:        
remarks:        
remarks:        > -- i3D
remarks:        
remarks:        
remarks:        > -- FACEBOOK
remarks:        
remarks:        
remarks:        -----------------------------------------
remarks:        | NIX.CZ route servers IPv6 |
remarks:        -----------------------------------------
remarks:        
remarks:        > -- Route Server
remarks:        
remarks:        
remarks:        -----------------------------------------
remarks:        | NIX.CZ direct peering IPv6 |
remarks:        -----------------------------------------
remarks:        
remarks:        > -- NIX.CZ
remarks:        
remarks:        
remarks:        > -- Casablanca INT
remarks:        
remarks:        > -- CESNET
remarks:        
remarks:        
remarks:        > -- MASTER INTERNET
remarks:        
remarks:        > -- 2 CONNECT
remarks:        
remarks:        > -- WIA
remarks:        
remarks:        
remarks:        > -- MGI
remarks:        
remarks:        > -- AKAMAI
remarks:        
remarks:        > -- FORPSI/INTERNET CZ
remarks:        
remarks:        > -- MICROSOFT
remarks:        
remarks:        > -- HA-VEL
remarks:        
remarks:        > -- BACKBONE
remarks:        
remarks:        
remarks:        > -- GOOGLE
remarks:        
remarks:        
remarks:        > -- TWITCH.TV
remarks:        
remarks:        
remarks:        > -- VERISIGN
remarks:        
remarks:        
remarks:        > -- VALVE
remarks:        
remarks:        
remarks:        > -- i3D
remarks:        
remarks:        
remarks:        > -- FACEBOOK
remarks:        
remarks:        
remarks:        -----------------------------------------
remarks:        | BGP customers IPv4 |
remarks:        -----------------------------------------
remarks:        
remarks:        > -- ONYX
remarks:        import: from AS197895 195.189.1.130 at 195.189.1.129 action pref=135; accept AS197895
remarks:        export: to AS197895 195.189.1.130 at 195.189.1.129 action med=500; announce ANY
remarks:        
remarks:        > -- TESCOSW
remarks:        
remarks:        > -- OLOMOUCKY KRAJ
remarks:        
remarks:        > -- EMPECOM
remarks:        
remarks:        > -- TS-BOHEMIA
remarks:        
remarks:        > -- GENERALNET
remarks:        
remarks:        -----------------------------------------
remarks:        | BGP customers IPv6 |
remarks:        -----------------------------------------
remarks:        
remarks:        > -- ONYX
remarks:        
remarks:        > -- TESCOSW
remarks:        
remarks:        > -- OLOMOUCKY KRAJ
remarks:        
remarks:        > -- EMPECOM
remarks:        
remarks:        > -- TS-BOHEMIA
remarks:        
remarks:        > -- GENERALNET
remarks:        
remarks:        
remarks:        -----------------------------------------
remarks:        | BGP community info |
remarks:        -----------------------------------------
remarks:        
remarks:        Type of route identifier : 39904:4000 - 4999
remarks:        39904:4000 - customer route
remarks:        39904:4040 - upstream route
remarks:        39904:4041 - upstream peer route - T-Mobile (GTS)
remarks:        39904:4042 - upstream peer route - UPC (SLOANE)
remarks:        39904:4043 - upstream peer route - KAORA
remarks:        39904:4100 - NIX.CZ route server peer route
remarks:        39904:4200 - NIX.CZ direct peer route
remarks:        39904:4444 - AS39904 originated route
remarks:        
remarks:        Comms for adv. control : 39904:6000 - 6999
remarks:        
remarks:        +-----------------------------------------+
remarks:        | We filter the bogus networks |
remarks:        | We also filter prefixes longer than /24 |
remarks:        +-----------------------------------------+
remarks:        
remarks:        -----------------------------------------
remarks:        | Abuse reporting |
remarks:        -----------------------------------------
remarks:        
remarks:        mailto: abuse@merit.cz
remarks:        
admin-c:        MGHM-RIPE
tech-c:         MGHM-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MERIT-MNT
created:        2006-05-12T09:03:22Z
last-modified:  2025-06-26T12:52:35Z
source:         RIPE
% 232 routing policy lines (import/export) not shown

Routing data

Updated just now

Registry record

Fetched just now from RIPE

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/39904

const res = await fetch('https://ip-fd.net/api/v1/asn/39904', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/39904', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/39904');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/39904", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Works without a key at a lower rate. Get a free key.

AS6855	Slovak Telekom, a.s. SK-TELEKOM
AS6939	Hurricane Electric LLC HURRICANE
AS16019	Vodafone Czech Republic a.s. VODAFONE-CZ-AS

AS47767	Regionalni centrum Olomouc s.r.o. RCO-AS
AS199604	OLOMOUCKY KRAJ KU-AS
AS205724	T.S.BOHEMIA a.s. TSB-AS
AS205968	GeneralNet s.r.o. ASGENERALNET

AS1764	Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH NEXTLAYER-AS
AS4455	IX Reach Ltd BSO
AS6204	TMRC GROUP SRL ZET-NET
AS6663	Euroweb Romania S.R.L. TTI-NET
AS6881	NIX.CZ z.s.p.o. NIXCZ
AS8218	Zayo Infrastructure France SA NEO-ASN
AS14840	BR.Digital Telecom AS14840
AS21215	UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd UGNI
AS22356	Durand do Brasil Ltda AS22356
AS24482	SG.GS SGGS-AS-AP
AS29504	Freenet Liberec, z.s. LBCFREE
AS36236	NetActuate, Inc NETACTUATE
AS40994	Hohl IT e.U. Alwyzon
AS44306	OMONIA d.o.o. Omonia
AS49544	i3D.net B.V i3Dnet
AS51184	Fonira Telekom GmbH FONIRA
AS198150	SIACOM JSC SIACOM-AS
AS212483	LEVEL EIGHTY-SIX COMMUNICATIONS LTD level86
AS263444	Open X Tecnologia Ltda AS263444
AS264409	Huge Solucoes Corporativas Ltda AS264409