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Internet tools
DNS lookup
DNS propagation check
Port scan + probeing
WHOIS / RDAP lookup
updated
HTTP/S request tool
TLS/SSL certificate check
beta
E-mail DNSBL blacklist check
Reverse DNS
CIDR calculator
beta
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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
updated
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
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Result
AS197451, Brno University of Technology
Last update of data:
01-05-2024 20:02 UTC
ASN:
AS197451 (VUTBR-AS)
Country:
CZ - Czech Republic (Europe)
Org.:
Brno University of Technology
https://www.vutbr.cz
Stats:
Peers
12
IX'es
1
Prefixes
10
IPv4
+67K
IPv6
1,0E+30
Contact:
Brno University of Technology
Antoninska 548/1
60190
Brno
CZECH REPUBLIC
CZ
+420541145453
History
Date
Peers
IX'es
Prefixes
IPv4
IPv6
Before 13-12-2023
11
1
12
67.584
1,0E+30
13-12-2023
-
-
-2
-512
-
03-04-2024
+1
-
-
-
-
Current
12
1
10
67.072
1,0E+30
Peers
Country
Relationship
ASN
Organization
Peers
Prefix'es
Czech Republic
Upstream
AS15935
ha-vel internet s.r.o.
79
12
Czech Republic
Upstream
AS16019
Vodafone Czech Republic a.s.
119
59
Czech Republic
Upstream
AS2852
CESNET z.s.p.o.
222
21
Czech Republic
Downstream
AS204860
NetX Networks a.s.
25
14
Czech Republic
Downstream
AS201263
Brno University of Technology
1
2
Czech Republic
Downstream
AS201931
LBnet.cz s.r.o.
2
2
Czech Republic
Downstream
AS202872
KME, spol. s r. o.
2
3
Czech Republic
Downstream
AS207167
mapnet IT services s.r.o.
9
7
Czech Republic
Downstream
AS210604
Pernix systems s.r.o.
2
2
Czech Republic
Downstream
AS34222
ZONER a.s.
3
3
Czech Republic
Downstream
AS24971
Master Internet s.r.o.
38
46
Czech Republic
Downstream
AS212138
Technicke site Brno, akciova spolecnost
2
1
Internet eXchange (IX) connections
Country
City
IX name
Port speed
Members
Czech Republic
Brno
BR-IX
40 Gb
8
Announced (uniq) prefixes
Country
ASN
Announced prefix
Description
Size
Czech Republic
AS197451
147.229.0.0/17
Brno University of Technology
32.768
Czech Republic
AS197451
147.229.128.0/18
Brno University of Technology
16.384
Czech Republic
AS197451
147.229.192.0/19
Brno University of Technology
8.192
Czech Republic
AS197451
147.229.224.0/19
Brno University of Technology
8.192
Czech Republic
AS197451
185.62.108.0/23
Brno University of Technology
512
Czech Republic
AS197451
185.149.204.0/22
M Computers s.r.o.
1.024
Country
ASN
Announced prefix
Description
Size
Czech Republic
AS197451
2001:67c:1220::/46
VUTBR6-NET
4,8E+24
Czech Republic
AS197451
2a03:2e0::/32
Brno University of Technology
7,9E+28
Czech Republic
AS197451
2a03:2e4::/30
Brno University of Technology
3,2E+29
Czech Republic
AS197451
2a07:6bc0::/29
M Computers s.r.o.
6,3E+29
Log
000
+000
Parse input (ASN)
000
+000
Search database for 'AS197451'
003
+003
1 ASN's found
003
+000
Done
003
+000
Load details of AS197451
024
+021
10 prefixes found
033
+009
12 peers found
037
+004
1 IX members found (2 connections)
038
+001
1 links loaded, 1 verified
039
+001
3 historical items loaded
039
+000
Done