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
AS211251, A1 Internet BV
Last update of data:
07-04-2024 23:04 UTC
ASN:
AS211251 (A1-DC)
Country:
NL - Netherlands (Europe)
Org.:
A1 Internet BV
Stats:
Peers
20
IX'es
1
Prefixes
8
IPv4
3.840
IPv6
-
Contact:
A1 Internet BV
Abelenstra Boulevard 52-10
8448JB
Heerenveen
NETHERLANDS
NL
+31 513 646493
History
Date
Peers
IX'es
Prefixes
IPv4
IPv6
Before 17-12-2023
19
1
8
3.840
-
17-12-2023
+5
-
-
-
-
14-01-2024
-2
-
-
-
-
10-03-2024
-3
-
-
-
-
07-04-2024
+1
-
-
-
-
Current
20
1
8
3.840
-
Peers
Country
Relationship
ASN
Organization
Peers
Prefix'es
Burkina Faso
Peer
AS37721
Virtual Technologies & Solutions
4.632
10
Finland
Peer
AS41666
Institute for Pyrotechnical Cleaning (limited company)
859
2
Ireland
Peer
AS39122
Blacknight Internet Solutions Limited
1.213
29
Lithuania
Upstream
AS28917
Fiord Networks, UAB
1.941
23
Luxembourg
Peer
AS199524
G-Core Labs S.A.
5.241
452
Netherlands
Upstream
AS1103
AS1103-MNT
1.082
95
Netherlands
Upstream
AS15703
True B.V.
146
17
Netherlands
Upstream
AS44854
Arend Brouwer
143
4
Netherlands
Upstream
AS57866
Fusix Networks B.V.
129
19
Netherlands
Peer
AS8283
Netwerkvereniging Coloclue
1.186
6
Netherlands
Peer
AS12859
BIT BV
1.185
59
Netherlands
Peer
AS41047
Bart Vrancken trading as MLaB
3.005
5
Netherlands
Peer
AS44103
The Mastermind Holding B.V.
404
20
Netherlands
Peer
AS49544
i3D.net B.V
6.510
134
Netherlands
Peer
AS51088
A2B IP B.V.
696
64
Sweden
Upstream
AS39351
31173 Services AB
2.620
47
Switzerland
Upstream
AS34927
iFog GmbH
2.643
59
Switzerland
Peer
AS8298
IPng Networks GmbH
2.162
5
Switzerland
Peer
AS58299
Openfactory GmbH
1.715
10
United States
Upstream
AS6939
Hurricane Electric LLC
10.632
262
Internet eXchange (IX) connections
Country
City
IX name
Port speed
Members
Netherlands
Amsterdam
Frys-IX
10 Gb
165
Announced (uniq) prefixes
Country
ASN
Announced prefix
Description
Size
Netherlands
AS211251
79.98.176.0/22
A1 Internet BV
1.024
Netherlands
AS211251
91.142.132.0/24
REDA Internet
256
Netherlands
AS211251
213.171.64.0/23
A1 Internet B.V.
512
Netherlands
AS211251
213.171.66.0/23
A1 Internet B.V.
512
Netherlands
AS211251
213.171.68.0/23
A1 Internet B.V.
512
Netherlands
AS211251
213.171.72.0/23
A1 Internet BV
512
Netherlands
AS211251
213.171.74.0/24
A1 Internet BV
256
Netherlands
AS211251
213.171.75.0/24
A1 Internet BV
256
Log
000
+000
Parse input (ASN)
000
+000
Search database for 'AS211251'
002
+002
1 ASN's found
002
+000
Done
002
+000
Load details of AS211251
013
+011
8 prefixes found
035
+022
20 peers found
038
+004
1 IX members found (1 connections)
041
+002
4 links loaded, 0 verified
043
+002
5 historical items loaded
043
+000
Done