iamroot.tech
Toggle navigation
Internet tools
DNS lookup
DNS propagation check
Port scan + probeing
WHOIS / RDAP lookup
HTTP/S request tool
TLS/SSL certificate check
beta
E-mail DNSBL blacklist check
Reverse DNS
CIDR calculator
beta
ASN database lookup
beta
What is my IPv4 and IPv6?
GeoIP location
QR code generator
Dev tools
Color contrast checker
Color picker
Lorem ipsum generator
URL encode/decode
HTML encode/decode
BASE64 encode/decode
Hash calculator (CRC64 - MD5 - SHA - RIPEMD)
Misc tools
Password generator
World map, day/night + local time
beta
All tools
Page nav
Page nav
iamroot.tech
Internet tools
DNS lookup
DNS propagation check
Port scan + probeing
WHOIS / RDAP lookup
HTTP/S request tool
TLS/SSL certificate check
beta
E-mail DNSBL blacklist check
Reverse DNS
CIDR calculator
beta
ASN database lookup
beta
What is my IPv4 and IPv6?
GeoIP location
QR code generator
Dev tools
Color contrast checker
Color picker
Lorem ipsum generator
URL encode/decode
HTML encode/decode
BASE64 encode/decode
Hash calculator (CRC64 - MD5 - SHA - RIPEMD)
Misc tools
Password generator
World map, day/night + local time
beta
Internet tools
DNS lookup
DNS propagation check
Port scan + probeing
WHOIS / RDAP lookup
HTTP/S request tool
TLS/SSL certificate check
beta
E-mail DNSBL blacklist check
Reverse DNS
CIDR calculator
beta
ASN database lookup
beta
What is my IPv4 and IPv6?
GeoIP location
QR code generator
Dev tools
Color contrast checker
Color picker
Lorem ipsum generator
URL encode/decode
HTML encode/decode
BASE64 encode/decode
Hash calculator (CRC64 - MD5 - SHA - RIPEMD)
Misc tools
Password generator
World map, day/night + local time
beta
CTRL+D to bookmark
Add to homescreen
×
Tap the 'Share button' at the bottom of the screen:
Scroll down the list, and select 'Add to Home Screen':
Tap the menu icon (3 dots - upper right-hand corner):
and select 'Add to homescreen'.:
ASN database
You may find these sub-pages interesting as well:
Top ASN's by country
Directory of +1.200 verified looking glass url's
NEW: ASN database statistics
Related tools
DNS lookup
DNS lookup / nslookup / DIG of DNS records. An online tool for DNS lookups. By default recursive lookups querying the authoritative name servers. Lookups on specific DNS resolvers are also possible. Additionally, it will look up secondary records and output a full log of what was done on a technical level.
WHOIS / RDAP lookup
Perform WHOIS and/or RDAP lookups on domains, IP addresses, and ASNs. Will output all available technical info, contact info, etc.
Reverse DNS
Perform reverse DNS (rDNS/PTR) lookups of any IP.
CIDR calculator
beta
IP to CIDR calculation tool with subnet info. The reverse, CIDR ranges to IP addresses, is also possible. Last but not least, it includes a tool for refactoring groups of IPs, domain names, and/or other CIDR ranges.
What is my IPv4 and IPv6?
Check your own IP - both IPv4 and IPv6. Works as a connectivity test as well.
GeoIP location
Online tool GeoIP location of any IP and/or domain.
World map, day/night + local time
beta
Beautiful day/night map of the world, with markup of all major cities including local date and time.
Result
AS25248, RADIOKOMUNIKACE a.s.
Last update of data:
03-05-2024 02:31 UTC
ASN:
AS25248 (BlueTone-AS)
Country:
CZ - Czech Republic (Europe)
Org.:
RADIOKOMUNIKACE a.s.
https://www.bluetone.cz
http://www.radiokomunikace.cz
Social media:
@linkedin
Stats:
Peers
62
IX'es
3
Prefixes
6
IPv4
+106K
IPv6
7,9E+28
Contact:
RADIOKOMUNIKACE a.s.
Skokanska 2117 / 1
169 00
Praha 6 - Brevnov
CZECH REPUBLIC
CZ
+420603291751
History
Date
Peers
IX'es
Prefixes
IPv4
IPv6
Before 04-12-2023
62
3
6
+106K
7,9E+28
04-12-2023
-4
-
-
-
-
13-12-2023
+4
-
-
-
-
28-12-2023
-1
-
-
-
-
04-01-2024
-1
-
-
-
-
18-01-2024
-3
-
-
-
-
25-01-2024
+3
-
-
-
-
01-02-2024
-11
-
-
-
-
29-02-2024
+10
-
-
-
-
07-03-2024
+2
-
-
-
-
14-03-2024
-1
-
-
-
-
21-03-2024
+2
-
-
-
-
28-03-2024
+4
-
-
-
-
05-04-2024
-4
-
-
-
-
26-04-2024
+1
-
-
-
-
03-05-2024
-1
-
-
-
-
Current
62
3
6
+106K
7,9E+28
- - show more (+11 entries) - -
- - show less (-11 entries) - -
Peers
Country
Relationship
ASN
Organization
Peers
Prefix'es
Austria
Upstream
AS1764
Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
967
80
Austria
Upstream
AS8447
A1 Telekom Austria AG
1.357
110
Austria
Peer
AS51184
Fonira Telekom GmbH
1.300
14
Austria
Peer
AS59890
Kabel-TV Lampert GmbH & Co KG
1.424
6
Austria
Peer
AS40994
Hohl IT e.U.
384
11
Austria
Peer
AS35369
LAGIS-MNT
321
11
Azerbaijan
Peer
AS29049
Delta Telecom Ltd
2.919
183
Brazil
Peer
AS14840
BR.Digital Provider
5.844
89
Britain (UK)
Upstream
AS60068
Datacamp Limited
788
374
Britain (UK)
Upstream
AS4455
IX Reach Ltd
2.344
18
Britain (UK)
Peer
AS212483
LEVEL EIGHTY-SIX COMMUNICATIONS LTD
3.274
30
Burkina Faso
Peer
AS37721
Virtual Technologies & Solutions
4.632
10
Czech Republic
Upstream
AS2852
CESNET z.s.p.o.
222
21
Czech Republic
Peer
AS29504
Freenet Liberec, z.s.
287
2
Czech Republic
Peer
AS6881
NIX.CZ z.s.p.o.
205
5
Czech Republic
Downstream
AS196762
ALKOM Security, a.s.
17
1
Czech Republic
Downstream
AS213359
Jan Korinek
1
2
Czech Republic
Downstream
AS196822
SELECT SYSTEM, s.r.o.
2
2
Czech Republic
Downstream
AS197046
FIXnet s.r.o.
31
3
Czech Republic
Downstream
AS197875
ORLEN Unipetrol RPA s.r.o.
2
1
Czech Republic
Downstream
AS198991
TV Nova sro
1
1
Czech Republic
Downstream
AS199600
Virtis s.r.o.
1
2
Czech Republic
Downstream
AS201594
Czech Telecommunication Office
18
2
Czech Republic
Downstream
AS202556
Spolek Krivonet
1
1
Czech Republic
Downstream
AS204351
NAM system, a.s.
2
1
Czech Republic
Downstream
AS204405
Durnet.cz sro
2
1
Czech Republic
Downstream
AS205724
T.S.BOHEMIA a.s.
2
1
Czech Republic
Downstream
AS206438
MX-NET Telekomunikace s.r.o.
2
2
Czech Republic
Downstream
AS206712
FELDSAM s.r.o.
1
6
Czech Republic
Downstream
AS213223
GasNet, s.r.o.
2
1
Czech Republic
Downstream
AS25192
CZ.NIC, z.s.p.o.
168
14
Czech Republic
Downstream
AS39790
Web4U s.r.o.
20
3
Czech Republic
Downstream
AS47834
SOFTEX NCP, s.r.o.
2
7
Czech Republic
Downstream
AS48405
CGI IT Czech Republic s.r.o.
2
1
Czech Republic
Downstream
AS52058
za200.cz s.r.o.
2
2
Czech Republic
Downstream
AS52130
LiveSport s.r.o.
4
2
Czech Republic
Downstream
AS52154
mjanik.net s.r.o.
2
1
Czech Republic
Downstream
AS57496
Praha1.net z.s.p.o.
2
3
Czech Republic
Downstream
AS57904
Vevynet s.r.o.
1
1
Czech Republic
Downstream
AS59925
Seonet Multimedia s.r.o.
1
2
Czech Republic
Downstream
AS215704
NGN CZ s.r.o.
19
1
France
Upstream
AS8218
Zayo Infrastructure France SA
1.864
25
Germany
Upstream
AS33891
Core-Backbone GmbH
1.902
-
Germany
Upstream
AS50629
LWLcom GmbH
1.780
25
Germany
Peer
AS5405
Inter.link GmbH
1.966
5
Italy
Peer
AS51185
MainStreaming SpA
4.218
30
Lithuania
Peer
AS28917
Fiord Networks, UAB
1.941
23
Netherlands
Upstream
AS20562
Broadband Hosting B.V.
1.353
-
Netherlands
Peer
AS41047
Bart Vrancken trading as MLaB
3.005
5
Netherlands
Peer
AS49544
i3D.net B.V
6.510
134
Serbia
Upstream
AS31042
Serbia BroadBand-Srpske Kablovske mreze d.o.o.
958
32
Serbia
Upstream
AS15958
CETIN Ltd. Belgrade
1.478
4
Serbia
Peer
AS13004
Serbian Open Exchange DOO
835
5
Singapore
Peer
AS24482
SG.GS
8.488
17
Slovenia
Peer
AS3212
Telemach UG d.o.o.
1.183
44
Sweden
Upstream
AS1299
Arelion Sweden AB
2.474
95
United States
Upstream
AS1239
Sprint
5.723
268
United States
Upstream
AS174
Cogent Communications
6.785
1.463
United States
Upstream
AS6939
Hurricane Electric LLC
10.632
262
United States
Upstream
AS6461
Zayo Bandwidth
2.660
225
United States
Peer
AS36236
NetActuate, Inc
7.343
206
United States
Downstream
AS11521
ModusLink Corporation
4
6
- - show more (+51 entries) - -
- - show less (-51 entries) - -
Internet eXchange (IX) connections
Country
City
IX name
Port speed
Members
Czech Republic
Prague
Peering.cz
-
173
Czech Republic
Praha 3
NIX.CZ
400 Gb
203
Slovakia
Bratislava
SIX Bratislava
10 Gb
60
Announced (uniq) prefixes
Country
ASN
Announced prefix
Description
Size
Czech Republic
AS25248
82.99.128.0/18
BlueTone-CRa-CZ
16.384
Czech Republic
AS25248
84.244.64.0/18
BlueTone-CRa-CZ
16.384
Czech Republic
AS25248
85.207.0.0/16
BlueTone-CRa-CZ
65.536
Czech Republic
AS25248
193.32.56.0/24
IPv4 network
256
Czech Republic
AS25248
212.158.128.0/19
BlueTone-CRa-CZ
8.192
Country
ASN
Announced prefix
Description
Size
Czech Republic
AS25248
2a02:a40::/32
Ceske Radiokomunikace, a.s.
7,9E+28
Log
000
+000
Parse input (ASN)
000
+000
Search database for 'AS25248'
002
+002
1 ASN's found
002
+000
Done
002
+000
Load details of AS25248
020
+018
6 prefixes found
073
+053
62 peers found
079
+007
3 IX members found (7 connections)
083
+003
3 links loaded, 3 verified
091
+008
16 historical items loaded
091
+000
Done