Tool Online Mantap 

PICTURE To ASCII Convert -
http://picascii.com

Whois - IP Address - Domain Name Lookup -
http://cqcounter.com/whois/

AdHoc IP Tools
http://tatumweb.com/iptools.htm

Ben's Web Utilities
http://www.phaster.com/find_info_net_traffic.html

central OPS
http://centralops.net/co/

dihe's IP Index
http://ipindex.homelinux.net/index.php

Domain Tools
http://www.domaintools.com/

Global Whois Search
http://www.ratite.com/whois/whois.html

Multi DNS Lookup (Bankes.com)
http://www.bankes.com/nslookup.htm

Network Solutions
http://www.networksolutions.com/whois/index.jsp

Public DNS Servers List
http://80.247.230.136/dns.htm

BGPPlay
http://www.ris.ripe.net/bgplay/

BrowserSpy
http://browserspy.dk/

CERT Station
http://browserspy.dk/

CIDR Reports (ASN & BGP Info)
http://www.cidr-report.org/as2.0/

CodeFlux Tools (SSL lookups)
http://codeflux.com/exec/tools/

Command Line Reference Page
http://www.ss64.com/

Country to IP Address Reference
http://www.proxyserverprivacy.com/ipaddress_range.php

Default Password List (another)
http://www.cyxla.com/passwords/passwords.html

DiG Gateway
http://www.spacereg.com/a.rpl?m=dig

digitalpoint DNS Zone Xfer
http://www.digitalpoint.com/tools/zone-transfer/

Fixed Orbit (ASN & BGP Info)
http://www.fixedorbit.com/search.htm

GeekTools (Does DNS AXFR)
http://www.geektools.com/tools.php

Graphical DNS Tools
http://www.zonecut.net/

HTTP Viewer
http://www.rexswain.com/httpview.html

InfoSysSec Online Tools
http://www.infosyssec.com/infosyssec/ipsectools.htm

Internet Topology Tools
http://www.caida.org/tools/taxonomy/topotaxonomy.xml

MD5 Hash Reverse Engineering Site
http://md5.rednoize.com/

Bermacam-macam ini cuy tinggal pilih
http://www.cybersnipers.com

Netcraft
http://news.netcraft.com/

Network-Tools (Does SSL lookups and chaos queries too)
http://www.us.sorbs.net/lookup.shtml

T1 Shopper Online Port Scanner
http://www.t1shopper.com/tools/

TechnicalInfo
http://www.technicalinfo.net/tools/index.html

Tiny URL (URL Decoder)
http://tinyurl.com/

TrimWare Online Tools
http://www.trimmail.com/news/tools/

User Agent Strings
http://www.useragentstring.com

Web Based Network Tools
http://home.planet.nl/%7Ehouwe135/wbnt1/

Web Probe
http://www.securityspace.com/sprobe/probe.html

Web Sniffer
http://web-sniffer.net/

Well Known Ports (plus trojans!)
http://www.neohapsis.com/neolabs/neo-ports/

Windows Event Id's
http://eventid.net/