oa5.com Report : Visit Site

Technical data of the oa5.com

Geo IP provides you such as latitude, longitude and ISP (Internet Service Provider) etc. informations. Our GeoIP service found where is host oa5.com. Currently, hosted in United Kingdom and its service provider is Coreix Limited - Legacy Server City allocations .

the related websites

cottages.com nottinghamshire.gov.uk link.springer.com troelsgravesen.dk staffordshirebmd.org.uk solitek.co.uk 

HTTP Header Analysis

HTTP Header information is a part of HTTP protocol that a user's browser sends to called Apache/2.2.15 (CentOS) containing the details of what the browser wants and will accept back from the web server.

DNS

HtmlToText

home aup contact us problems and issues? legal information advertising registration ts&cs professional internet services comments posts recent posts we’re leaving hertfordshire 2nd june 2016 trading connectivity and convention for address space 11th february 2005 categories uncategorised we’re leaving hertfordshire after 34 years in east herts, 28 in much hadham we’re moving on 6/7 th june to milnathort on the outskirts of kinross. our new address will be 22/24 church street milnathort perth & kinross ky13 9xh the servers are remaining in the hosting centre for now. june 2nd, 2016 | category: uncategorised | comments are closed trading connectivity and convention for address space copyright © 2005 andrew macpherson. redistribution permitted under the gnu creative commons licence. maximising address space by shuning ones neighbours andrew macpherson [email protected] today’s soho adsl customer typically buys a small block of 8 fixed ip addresses which after deduction of two broadcast values, and a gateway address leaves 5 usable addresses for their equipment. none of these three deducted addresses should be accessible from the internet at large, unless the gateway address is used both on the lan and wan interface (unusual). additionally hosting center customers will sometimes find themselves with blocks that cannot simply be joined by shifting their netmask by one bit, implying a duplication of the overhead. this article will explore ways of losing the overhead, and discuss the consequences. address allocation to network customers address space is given to end customers in two models, which can be characterised as hub vs firewall, or n vs n+1. in the hub case the n addresses will be just that — n addresses within a larger address space, quite possibly assigned completely at random. the random assignment is particularly true of some cable operators. with the firewall or n+1 model the address assignment matches conventional routed subnets, the n addresses are contiguous, while the 1 is the red interface of the firewall, and will definitely be assigned on the hub model. switch / hub customers where each host plugs directly into a larger network, each must act as its own firewall. the broadcast address will be that for the whole subnetwork, and no address space wasted. the interface hub will simply forward most packets to the service provider’s lan, though local inter-host packets may stay within the hub or switch. many service providers use this model, and it is the only model for single-address usb broadband modems, and in common use for multi-address cable modems. routed customers rfc1219 (qv) “on the assignment of subnet numbers” is unfortunately much neglected by hosting centres and those assigning static blocks on the n+1 model to adsl/leased line customers. this scheme would allocate starting addresses for allocation chunks thus: 128.199.0.0 00000000 128.199.0.128 10000000 128.199.0.64 01000000 128.199.0.192 11000000 128.199.0.32 00100000 128.199.0.160 10100000 128.199.0.96 01100000 128.199.0.224 11100000 . . . 128.199.0.248 11111000 in a form of reverse binary counting, where the leftmost bit of the final octet is the least significant bit and the rightmost the most significant. it maximises the space that an assigned block can be expanded to fill for as long as possible while the bigger block is being split up if the simple guidelines in this standard were followed for the starting addresses of the assigned blocks, then it would be easy to accomodate any rapid initial growth of address-space requirements of their customers, with an easy netmask change. of course once the space is allocated problems are as bad as if the procedure had never been followed. so what usually happens? the technician delegating address space simply starts at the bottom of their allocated space and hands it out in their normal n-address chunks, typically 8 addresses for broadband, and 16 or 32 for hosting centres. we will consider an 8 address block for most of the rest of this article: 128.199.0.8 network 128.199.0.9 gateway 128.199.0.10 host 1 128.199.0.11 host 2 128.199.0.12 host 3 128.199.0.13 host 4 128.199.0.14 host 5 128.199.0.15 broadcast address this block has an associated netmask of 255.255.255.248, when we do a bitwise not of the netmask, and birwise ‘or’ that with the network, we get the broadcast addresses. the total effect is that 3 addresses, 38% of the address space you are paying for is lost to overhead and unusable for your machines so what about this overhead? let’s start with something that may surprise you. all these “overhead” addresses are just host addresses as far as most of the internet is concerned. they have no special meaning — nothing tells the internet that these are broadcast addresses, gateways or sub-networks. that’s right — if we can remove their special local meaning these addresses can be used for more hosts — just like you thought you would be able to! yes, but don’t we need broadcast addresses? yes we need a broadcast address locally, but there is no legitimate reason for all the internet at large to be able to talk to it. also the first address in the block, sometimes known as the “zeros” broadcast is not actually used except inside routing tables to identify the sub-network. it may or may not be usable depending on what equipment your isp is using to talk to you — but outside your isp it is definitely just another host address. ok but what about my firewall? well you have to be able to address it, but the world out there does not need to be able to talk to the inside address of your firewall — you’ve already exposed the wan port for them to attack. that’s enough! if you move that address outside the visible range you have space for another server. ok i want to have more addresses, what do i do? poor artists copy, great artists steal. — salvador dali steal some extra address space for internal use. the stolen space is something you can only look at in private (like stolen art) and you will not be able to access the systems which legitimately have those addresses, so if the wan – side gateway falls into the range you are going to steal forget it, likewise other wan – side services, but in general you will be cutting off your neighbours. in britain those neighbours might well be at the other end of the country because of the way traffic is tunnelled by bt to your isp. the odds are you would never want to talk to their servers anyway. to steal addresses you need to shift your netmask until there is address space both before and after the routable block you have been assigned. in our example our block starts at 128.199.0.8 , and the netmask is 255.255.255.248 . if we shift the netmask by one bit to 255.255.255.240 then the address block will start at 128.199.0.0 but still finish at 128.199.0.15 , so we need to move the netmask by 2 bits to 255.255.255.224 . now we are declaring our internal network to comprise 32 addresses 128.199.0.0 to 128.199.0.31 , though we still only have the original 8 routable addresses. there have been some side effects though — the zeros broadcast address has become the unroutable 128.199.0.0 and the ones broadcast 128.199.0.31 — again outside the routable block, freeing 2 addresses for you to put hosts on. and don’t forget that you can get an extra address by moving your firewall’s internal gateway address out of the routable block as well — in our example 128.199.0.23 might be a good address, as it is a “broadcast address” when allocated by your isp none of the addresses we’ve subverted will be used by anyone with a conventional configuration. they’re all broadcast or network addresses. if you’re really concerned you can put explicit routes into your kernel for the other hosts in the blocks you’ve taken over as local finally if you have a managed hub, this again is something that you should keep outside the publicly visible address space, but if you have a remote control power switches, remember that

URL analysis for oa5.com

http://www.oa5.com/contact-us/problems-and-issues/
http://www.oa5.com/feed/
http://www.oa5.com/acceptable-use-policy/
http://www.oa5.com/2005/02/trading-connectivity-and-convention-for-address-space/
http://www.oa5.com/wp-login.php
http://www.oa5.com/comments/feed/
http://www.oa5.com/contact-us/
http://www.oa5.com/2016/06/were-leaving-hertfordshire/
http://www.oa5.com/category/uncategorised/
http://www.oa5.com/uniform-domain-name-dispute-resolution-policy/
http://www.oa5.com/contact-us/advertising/
http://www.oa5.com/contact-us/legal-information/

Whois Information

Whois is a protocol that is access to registering information. You can reach when the website was registered, when it will be expire, what is contact details of the site with the following informations. In a nutshell, it includes these informations;

Domain Name: OA5.COM
Registry Domain ID: 2335918_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.tucows.com
Registrar URL: http://www.tucowsdomains.com
Updated Date: 2017-04-30T03:48:15Z
Creation Date: 1998-05-30T04:00:00Z
Registry Expiry Date: 2018-05-29T04:00:00Z
Registrar: Tucows Domains Inc.
Registrar IANA ID: 69
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Status: ok https://icann.org/epp#ok
Name Server: NS1.IRIAL.COM
Name Server: NS1.OA5.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2017-09-28T23:32:13Z <<<

For more information on Whois status codes, please visit https://icann.org/epp

NOTICE: The expiration date displayed in this record is the date the
registrar's sponsorship of the domain name registration in the registry is
currently set to expire. This date does not necessarily reflect the expiration
date of the domain name registrant's agreement with the sponsoring
registrar. Users may consult the sponsoring registrar's Whois database to
view the registrar's reported date of expiration for this registration.

TERMS OF USE: You are not authorized to access or query our Whois
database through the use of electronic processes that are high-volume and
automated except as reasonably necessary to register domain names or
modify existing registrations; the Data in VeriSign Global Registry
Services' ("VeriSign") Whois database is provided by VeriSign for
information purposes only, and to assist persons in obtaining information
about or related to a domain name registration record. VeriSign does not
guarantee its accuracy. By submitting a Whois query, you agree to abide
by the following terms of use: You agree that you may use this Data only
for lawful purposes and that under no circumstances will you use this Data
to: (1) allow, enable, or otherwise support the transmission of mass
unsolicited, commercial advertising or solicitations via e-mail, telephone,
or facsimile; or (2) enable high volume, automated, electronic processes
that apply to VeriSign (or its computer systems). The compilation,
repackaging, dissemination or other use of this Data is expressly
prohibited without the prior written consent of VeriSign. You agree not to
use electronic processes that are automated and high-volume to access or
query the Whois database except as reasonably necessary to register
domain names or modify existing registrations. VeriSign reserves the right
to restrict your access to the Whois database in its sole discretion to ensure
operational stability. VeriSign may restrict or terminate your access to the
Whois database for failure to abide by these terms of use. VeriSign
reserves the right to modify these terms at any time.

The Registry database contains ONLY .COM, .NET, .EDU domains and
Registrars.

  REGISTRAR Tucows Domains Inc.

SERVERS

  SERVER com.whois-servers.net

  ARGS domain =oa5.com

  PORT 43

  TYPE domain

DOMAIN

  NAME oa5.com

  CHANGED 2017-04-30

  CREATED 1998-05-30

STATUS
ok https://icann.org/epp#ok

NSERVER

  NS1.IRIAL.COM 80.252.187.85

  NS1.OA5.NET 89.187.75.230

  REGISTERED yes

Mistakes

The following list shows you to spelling mistakes possible of the internet users for the website searched .