As a follow up to my DNS post, I started trying to answer "Who's in charge of all this?".
Basically, I wanted to know what keeps me from claiming a different domain name or for that matter for claiming a different IP address.
I went down a rabbit hole of RFC's and never quite pulled out the answer to my question, but I wanted to post what I did find out since it's been languishing in my drafts for too long.
Systems were each keeping track of the list of "names" of hosts and their "addresses" (which seem to just be decimal numbers, it's unclear what protocol these addresses were for as this was before the IP protocol was developed.).
In 1973, the NIC put out an official list of host names and addresses, afterwhich somebody suggested that the NIC maintain a file that other hosts can pull down. The NIC agreed, and started serving a "HOSTS.TXT" file in ASCII format with the host name and addresses available via FTP.
In 1981, Internet Protocol (IP) was introduced, and J. Postel put out a list of IP ranges assigned to existing networks. These networks were free to assign IP addresses in that range as they saw fit.
In 1982, Feinler updates the HOSTS.TXT format to use IP addresses and to specify networks, gateways and hosts separately.
First computers linked
Engelbart volunteers Stanford Research Institute (SRI) to be the Network Information Center (NIC) since he has NLS (oN-Line System) which could help manage it.
Jake Feinler transfers into ARC (Augmentation Research Center) to work on NIC.
RFC 349 - Proposed Socket Numbers
Postel suggests there be a czar for socket numbers for standard protocols
and that it be him
Socket Number List - RFC 433
Postel specifies the socket number assignent
RFC 597 - List of hosts on ARPANET
interestingly the address numbers are between 0 and 255
OFFICE-1 the NIC host is on a PDP-10 along with NLS Also offers "TENEX"
RFC 606 - Host Names On-Line
L. Peter Deutsch recommends a centralized list of host names
RFC 608 - Host Names On-Line
Jake commits to updating a text file
File lives at
Host "OFFICE-1" Host Address = 43 decimal
^^ so Host Addresses were just numbers
NLS sold to Tymshare, with it the machine NIC ran on, so NIC switches to DEC-10
RFC 739 - Assigned Numbers
Postel lists the assigned "link" numbers and socket numbers for protocols.
Not clear to me exactly what a "link" is. I'm not sure how packets were
routed, this was pre-IP though, so maybe it was in a really weird way
Refers to the "internetwork protocols"
Convert from NCP to TCP/IP (NCP was original Arpanet protocol)
RFC 790 - Assigned Numbers
Class A,B,C networks described.
IP ranges assigned to different networks
RFC 796 - Address Mappings
Class A,B,C networks, describes how network specific addresses correspond
to IP addresses.
RFC 791 - Internet Protocol (IP)
This is an update
It can be obtained by connecting to host SRI-NIC (10.0.0.73) from your local FTP server, logging in as user=ANONYMOUS, password=GUEST, and doing a 'get' on
RFC 811 - Hostname Server
SRI-NIC is mentioned to be running on a Foonly
Describes command interface for looking up the host addresses for machines by name
Deadline for military to adopt TCP/IP
Domain Name requirements
The administrator of a level N domain must register with the
registrar (or responsible person) of the level N-1 domain. This
upper level authority must be satisfied that the requirements are
met before authorization for the domain is granted.
Lays out the information necessary to register a domain. Essentially:
email email@example.com with your information including the IP addresses of the name servers that will host the DNS information.
The IP address listed is of the typical x.x.x.x format.
RFC 995: Hostname server
(Feinler update to RFC 811)
NIC took over maintaining assigned numbers and become Arpanet/DDN's naming auhtority
NIC contract awarded to Network Solutions Inc (NSI).
NSI adds root server
RFC 1591 (Postel):
internic.net - registers second level domains under the TLD's (com, edu, org, gov, net)
now is US Department of Commerce
.mil - DDN
.int - PVM at ISI.edu (USC)
- If NIC did the host names, what did IANA do?
- What is TIP? and what is a TIP phone number?
- What was Namedroppers?
- What format were addresses before IP? How did things get routed?
(b) USC started in 1987
USC b root server
(c) also started in 1987
Cogent c root server
University of Mayland d root server
IANA's role - RFC 1591
"It is extremely unlikely that any other TLDs will be created." (lol)