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ASN database lookup
beta
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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
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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.
Top ASN's from China
Top 3 of China
AS4134
No.31,Jin-rong Street
321 peers, +110M IPv4 adresses and 3,2E+32 IPv6 adresses.
AS4837
CHINA UNICOM China169 Backbone
136 peers, +57M IPv4 adresses and 3,2E+31 IPv6 adresses.
AS9808
China Mobile
52 peers, +35M IPv4 adresses and 3,3E+32 IPv6 adresses.
Top 20 by count of peers
Country
ASN
Organization
Peers
IX'es
IPv4
IPv6
China
AS38255
China Education and Research Network (CERNET)
4.101
-
-
7,9E+28
China
AS140731
TOHU Public Internet
851
10
256
7,0E+26
China
AS205794
JINZE YANG
396
5
-
3,1E+26
China
AS4809
China Telecom Next Generation Carrier Network
360
5
+617K
7,9E+28
China
AS24429
Taobao
336
24
+50K
1,1E+26
China
AS4134
No.31,Jin-rong Street
321
13
+110M
3,2E+32
China
AS132203
Shenzhen Tencent Computer Systems Company Limited
277
19
+1M
2,0E+28
China
AS55967
Beijing Baidu Netcom Science and Technology Co., Ltd.
145
2
+48K
5,0E+27
China
AS4837
CHINA UNICOM China169 Backbone
136
4
+57M
3,2E+31
China
AS139742
Peddie Institute Co., Ltd
103
5
512
4,8E+24
China
AS4808
China Unicom Beijing Province Network
98
-
+7M
2,6E+30
China
AS209650
Wu Zhiyuan
85
8
256
7,9E+28
China
AS4847
China Networks Inter-Exchange
77
-
+4M
7,9E+28
China
AS139317
Ningbo Dahuamao Information Technology Co Ltd
65
9
-
7,4E+25
China
AS17621
China Unicom Shanghai network
60
-
+1M
1,9E+30
China
AS4812
China Telecom (Group)
55
-
+8M
3,9E+30
China
AS4538
China Education and Research Network Center
55
-
+17M
7,9E+28
China
AS9808
China Mobile
52
-
+35M
3,3E+32
China
AS4842
Tianhai InfoTech
52
5
256
6,6E+26
China
AS56048
China Mobile Communications Corporation
49
-
+1M
1,1E+30
Top 10 by count of IPv4
Country
ASN
Organization
Peers
IX'es
IPv4
IPv6
China
AS4134
No.31,Jin-rong Street
321
13
+110M
3,2E+32
China
AS4837
CHINA UNICOM China169 Backbone
136
4
+57M
3,2E+31
China
AS9808
China Mobile
52
-
+35M
3,3E+32
China
AS4538
China Education and Research Network Center
55
-
+17M
7,9E+28
China
AS37963
Hangzhou Alibaba Advertising Co.,Ltd.
18
2
+11M
8,2E+31
China
AS4812
China Telecom (Group)
55
-
+8M
3,9E+30
China
AS4808
China Unicom Beijing Province Network
98
-
+7M
2,6E+30
China
AS45090
Shenzhen Tencent Computer Systems Company Limited
19
4
+5M
7,9E+28
China
AS4847
China Networks Inter-Exchange
77
-
+4M
7,9E+28
China
AS17816
China Unicom IP network China169 Guangdong province
6
-
+3M
4,0E+30
Top 10 by count of IPv6
Country
ASN
Organization
Peers
IX'es
IPv4
IPv6
China
AS9808
China Mobile
52
-
+35M
3,3E+32
China
AS23910
IRT-CERNET-AP
49
-
3.072
3,2E+32
China
AS4134
No.31,Jin-rong Street
321
13
+110M
3,2E+32
China
AS137726
China Petroleum & Chemical Corporation
2
-
-
3,2E+32
China
AS133111
CERNET New Technology Co., Ltd
19
-
+25K
1,6E+32
China
AS37963
Hangzhou Alibaba Advertising Co.,Ltd.
18
2
+11M
8,2E+31
China
AS38365
Beijing Baidu Netcom Science and Technology Co., Ltd.
11
1
+325K
8,1E+31
China
AS4837
CHINA UNICOM China169 Backbone
136
4
+57M
3,2E+31
China
AS24445
China Mobile
2
-
+2M
5,5E+30
China
AS56040
China Mobile Communications Corporation
27
-
+2M
5,4E+30