The Internet is the largest internet (with a small "i") in the world. It is a three level hierarchy composed of backbone networks (e.g. ARPAnet, NSFNet, MILNET), mid-level networks, and stub networks. These include commercial (.com or .co), university (.ac or .edu ) and other research networks (.org, .net) and military (.mil) networks and span many different physical networks around the world with various protocols, chiefly the Internet Protocol.
 
 Until the advent of the World-Wide Web in 1990, the Internet was almost entirely unknown outside universities and corporate research departments and was accessed mostly via command line interfaces such as telnet and FTP. Since then it has grown to become an almost-ubiquitous aspect of modern information systems, becoming highly commercial and a widely accepted medium for all sort of customer relations such as advertising, brand building, and online sales and services. Its original spirit of cooperation and freedom have, to a great extent, survived this explosive transformation with the result that the vast majority of information available on the Internet is free of charge.
 While the web (primarily in the form of HTML and HTTP) is the best known aspect of the Internet, there are many other protocols in use, supporting applications such as electronic mail, Usenet, chat, remote login, and file transfer.
 
 There were 20,242 unique commercial domains registered with InterNIC in September 1994, 10% more than in August 1994. In 1996 there were over 100 Internet access providers in the US and a few in the UK (e.g. the BBC Networking Club, Demon, PIPEX).
 There are several bodies associated with the running of the Internet, including the Internet Architecture Board, the Internet Assigned Numbers Authority, the Internet Engineering and Planning Group, Internet Engineering
 Steering Group, and the Internet Society.

The History of the Internet

The History of Internet According to Different Phases.

1957-1973 | 1974-1983 | 1984-1990 | 1991-1995 | 1996-Present

1957
The USSR launches Sputnik, the first artificial earth satellite. In response, the United States forms the Advanced Research Projects Agency (ARPA) within the Department of Defense (DOD) to establish US lead in science and technology applicable to the military.

1962
RAND Paul Baran, of the RAND Corporation (a government agency), was commissioned by the U.S. Air Force to do a study on how it could maintain its command and control over its missiles and bombers, after a nuclear attack. This was to be a military research network that could survive a nuclear strike, decentralized so that if any locations (cities) in the U.S. were attacked, the military could still have control of nuclear arms for a counter-attack.
Baran's finished document described several ways to accomplish this. His final proposal was a packet switched network.

"Packet switching is the breaking down of data into datagram's or packets that are labeled to indicate the origin and the destination of the information and the forwarding of these packets from one computer to another computer until the information arrives at its final destination computer. This was crucial to the realization of a computer network. If packets are lost at any given point, the message can be resent by the originator."

1968
ARPA awarded the ARPANET contract to BBN. BBN had selected a Honeywell minicomputer as the base on which they would build the switch. The physical network was constructed in 1969, linking four nodes: University of California at Los Angeles, SRI (in Stanford), University of California at Santa Barbara, and University of Utah. The network was wired together via 50 Kbps circuits.

1972
The first e-mail program was created by Ray Tomlinson of BBN. The Advanced Research Projects Agency (ARPA) was renamed The Defense Advanced Research Projects Agency (or DARPA)
ARPANET was currently using the Network Control Protocol or NCP to transfer data. This allowed communications between hosts running on the same network.

1973
Development began on the protocol later to be called TCP/IP, it was developed by a group headed by Vinton Cerf from Stanford and Bob Kahn from DARPA. This new protocol was to allow diverse computer networks to interconnect and communicate with each other.
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1974

First Use of term Internet by Vint Cerf and Bob Kahn in paper on Transmission Control Protocol.


1976
Dr. Robert M. Metcalfe develops Ethernet, which allowed coaxial cable to move data extremely fast. This was a crucial component to the development of LANs.
The packet satellite project went into practical use. SAT NET, Atlantic packet Satellite network, was born. This network linked the United States with Europe. Surprisingly, it used INTELSAT satellites that were owned by a consortium of countries and not exclusively the United States government. UUCP (Unix-to-Unix Copy) developed at AT&T Bell Labs and distributed with UNIX one year later.
The Department of Defense began to experiment with the TCP/IP protocol and soon decided to require it for use on ARPANET.


1979
USENET (the decentralized news group network) was created by Steve Bellovin, a graduate student at University of North Carolina, and programmers Tom Truscott and Jim Ellis. It was based on UUCP.
The Creation of BITNET, by IBM, "Because its Time Network", introduced the "store and forward" network. It was used for email and list serves.

1981
National Science Foundation created backbone called CSNET 56 Kbps network for institutions without access to ARPANET. Vinton Cerf proposed a plan for an inter-network connection between CSNET and the ARPANET.

1983
Internet Activities Board (IAB) was created in 1983. On January 1st, every machine connected to ARPANET had to use TCP/IP. TCP/IP became the core Internet protocol and replaced NCP entirely.

The University of Wisconsin created Domain Name System (DNS). This allowed packets to be directed to a domain name, which would be translated by the server database into the corresponding IP number. This made it much easier for people to access other servers, because they no longer had to remember numbers.
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1984
The ARPANET was divided into two networks: MILNET and ARPANET. MILNET was to serve the needs of the military and ARPANET to support the advanced research component, Department of Defense continued to support both networks.

Upgrade to CSNET was contracted to MCI. New circuits would be T1 lines,1.5 Mbps which is twenty-five times faster than the old 56 Kbps lines. IBM would provide advanced routers and Merit would manage the network. New network was to be called NSFNET (National Science Foundation Network), and old lines were to remain called CSNET.

1985
The National Science Foundation began deploying its new T1 lines, which would be finished by 1988.

1986
The Internet Engineering Task Force or IETF was created to serve as a forum for technical coordination by contractors for DARPA working on ARPANET, US Defense Data Network (DDN), and the Internet core gateway system.

1987
BITNET and CSNET merged to form the Corporation for Research and Educational Networking (CREN), another work of the National Science Foundation.

1988
Soon after the completion of the T1 NSFNET backbone, traffic increased so quickly that plans immediately began on upgrading the network again.

1990
(Updated 8/2001) Merit, IBM and MCI formed a not for profit corporation called ANS, Advanced Network & Services, which was to conduct research into high speed networking. It soon came up with the concept of the T3, a 45 Mbps line. NSF quickly adopted the new network and by the end of 1991 all of its sites were connected by this new backbone.

While the T3 lines were being constructed, the Department of Defense disbanded the ARPANET and it was replaced by the NSFNET backbone. The original 50Kbs lines of ARPANET were taken out of service.

Tim Berners-Lee and CERN in Geneva implements a hypertext system to provide efficient information access to the members of the international high-energy physics community.
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1991
CSNET (which consisted of 56Kbps lines) was discontinued having fulfilled its important early role in the provision of academic networking service. A key feature of CREN is that its operational costs are fully met through dues paid by its member organizations.

The NSF established a new network, named NREN, the National Research and Education Network. The purpose of this network is to conduct high speed networking research. It was not to be used as a commercial network, nor was it to be used to send a lot of the data that the Internet now transfers.

1992
Internet Society is chartered.

World-Wide Web released by CERN.

NSFNET backbone upgraded to T3 (44.736Mbps)

1993
InterNIC created by NSF to provide specific Internet services: directory and database services (by AT&T), registration services (by Network Solutions Inc.), and information services (by General Atomics/Carnet).

Marc Andreessen and NCSA and the University of Illinois develops a graphical user interface to the WWW, called "Mosaic for X".

1994
No major changes were made to the physical network. The most significant thing that happened was the growth. Many new networks were added to the NSF backbone. Hundreds of thousands of new hosts were added to the INTERNET during this time period.

Pizza Hut offers pizza ordering on its Web page.

First Virtual, the first cyber bank, opens.

ATM (Asynchronous Transmission Mode, 145Mbps) backbone is installed on NSFNET.

1995
The National Science Foundation announced that as of April 30, 1995 it would no longer allow direct access to the NSF backbone. The National Science Foundation contracted with four companies that would be providers of access to the NSF backbone (Merit). These companies would then sell connections to groups, organizations, and companies.

$50 annual fee is imposed on domains, excluding .edu and .gov domains which are still funded by the National Science Foundation.

1996-2004
Most Internet traffic is carried by backbones of independent ISPs, including MCI, AT&T, Sprint, UUNet, BBN planet, ANS, and more.

Currently the Internet Society, the group that controls the INTERNET, is trying to figure out new TCP/IP to be able to have billions of addresses, rather than the limited system of today. The problem that has arisen is that it is not known how both the old and the new addressing systems will be able to work at the same time during a transition period.

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Pakistan Internet Isp's

What is ISP ?

An Internet Service Provider, or ISP, is a company that provides its customers with access to the Internet. Customers may connect to their ISP through dialup (telephone), broadband (including DSL, ISDN and cable modem services), or wireless connections. There are countless national and regional ISPs, and a great many websites exist to help you locate the best one for you.

A Comprehensive Resource On Pakistan Internet Isp
Pakistan Internet Isp :

Brain Net Brain NET is pioneer in Internet Service industry in Pakistan and considered to be largest Internet service provider with greater geographical coverage and vast range of internet solutions for consumer and corporate sector. http://www.brain.net.pk
Super Net Supernet, is the largest data Network Operator and Internet Service Provider (ISP) in Pakistan. http://www.super.net.pk
Apollo Online Apollo Online was founded in May 1998 to provide local businesses and domestic users  with One-Stop Internet Services. http://www.apollo.net.pk
COMSATS COMSATS Internet Services (CIS) is one of the leading Internet Service providers in Pakistan. http://www.comsats.net.pk
CyberNet We are Pakistan's largest Data Network Operator & ISP, with state of the art infrastructure, countrywide reach & cutting edge systems. http://www.cyber.net.pk
GemNet Karachi based ISP that offers dialup, DDP and ISDN services. www.gem.net.pk
WorldCALL Online ISP that offers dialup access in Islamabad, Lahore and Rawalpindi. www.worldcall.net.pk
ISPAK The official site of ISPs Association of Pakistan. Head office located at Karachi. www.ispak.org
Comsats Internet Services Offers dialup, DDP and ISDN access in Attock, Faisalabad, Gilgit, Gujar Khan, Islamabad, Karachi, Lahore, Multan, Peshawar and Sialkot. www.comsats.net.pk
Cybernet One of the largest ISPs in Pakistan offering dialup, DDP, DRAP, ISDN, SRAP and other services in Faisalabad, Islamabad, Karachi, Lahore and Peshawar. www.cyber.net.pk
Multinet Karachi based ISP that offers dialup and DSL access. www.multi.net.pk
Paknet Paknet Limited, a fully owned Subsidiary of Pakistan Telecommunication Company Limited (PTCL), is one of the largest public sector ISPs with point of presence in more than 300 cities. Services include dialup, ISDN, Static IP, and Asymmetric Satellite Intel www.paknet.com.pk
AT Formerly IBM Global Network, Pakistan. It has presence in more than 50 countries. In Pakistan, offers dialup internet access in Karachi. www.attbusiness.net
Beliscity ISP Tariff guide for Karachi. One of the few companies who deal in internet packages of a large number of ISPs. www.beliscity.com

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