47 votes
Accepted

Why does my IP address become Google's IP address when using Chrome on the mobile?

You have Data Saver turned on in the settings of Google Chrome. It proxies all your HTTP (not HTTPS or incognito) traffic through an optimisation server at Google to make the pages smaller.
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  • 676
39 votes
Accepted

IP ADDRESS request vs. DOMAIN NAME request?

I think I found my answer. So, the thing is, because I bought a shared hosting package, they also gave me a shared IP. My guess is, this IP has many websites next to mine and they're all accessible ...
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36 votes
Accepted

Which browsers support SNI?

It should be noted that the following list has not been updated since November 2014. The following browsers do support SNI: Internet Explorer 7 or newer, on Windows Vista or newer. Mozilla Firefox 2....
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  • 2,343
32 votes
Accepted

Should a website be directly accessible by its IP address?

Note that the website that is reached through a domain name might not be hosted directly at the root of the IP address, i.e. example.org could map to 123.45.67.89/~example. This is common for normal ...
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  • 438
16 votes

How to remove our IP address from Microsoft's email blacklist?

I have had server IP's blacklisted by Microsoft a few times and I have had them removed reasonably quickly. I noticed that after entering and joining anti spam related services that they recommend it ...
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  • 361
12 votes
Accepted

Will altering my HOSTS file allow me to access sites that can't be directly accessed via IP?

Yes - altering a HOSTS file locally to redirect a domain to an IP isn't the same as simply typing in that IP into the browser. The reason why is that in shared hosting, one IP address houses multiple ...
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9 votes

Should a website be directly accessible by its IP address?

The original version of HTTP did not include any mechanism for the client to specify the host name as part of the request. It connected to the server and sent only the path portion of the URL. One ...
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9 votes

When buying a domain what are the differences between nameservers (NS records) and other DNS servers?

The answers so far write about name servers and DNS as though they were two different things. They aren't. A DNS server is a name server. There are other name services, e.g. Corba's COSNaming, the RPC ...
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8 votes

Banning unresolved IP addresses

BOTS, CRAWLERS and SCRAPERS use IP addresses in blocks, its rare to see one that will use the same IP address over and over. IP blocks are often sold, brought and then sold again! some of these blocks ...
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  • 32.6k
8 votes

When buying a domain what are the differences between nameservers (NS records) and other DNS servers?

I think in order to clarify what is going on it helps to have an overview. The first thing to keep in mind is the internet runs on IP addresses, but people would rather remember words (domains) than ...
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  • 181
7 votes

Should a website be directly accessible by its IP address?

Especially if you have a shared hosting or a server of your own hosting multiple domains you can't access the "website" via IP. For your own server you could possibly define a primary domain that is ...
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7 votes

Block a random domain pointing at my dedicated IP

I deal with this type of situation using my virtual host configuration. Under Apache, the first virtual host is the "default" virtual host. I configure it to serve a 404 error with the message ...
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7 votes

How to identify if IP address is really google's IP

From the official docs to verify Googlebot / Google: Note that Google does not recommend using a static "whitelist". You can verify if a web crawler accessing your server really is ...
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  • 41.2k
6 votes
Accepted

The number of sites on a shared host

Both answers are right to a point. I used to be a web host and a registered ISP. I was a presenter at the first ISPCon known as ISPOne for USRobotics and represented well over 1 billion dollars in ...
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  • 32.5k
6 votes
Accepted

Get IP address of website

Unless you have a dedicated IP address you cannot pull up your website using one. Shared hosts will put hundreds or thousands of sites on a single IP address. And as you can see the IP address itself ...
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  • 85.8k
6 votes

When buying a domain what are the differences between nameservers (NS records) and other DNS servers?

In simple terms: The nameserver tells the internet where the DNS records are located e.g. ns1.example.com and ns2.example.com Then the DNS at example.com tells the internet where to find different ...
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  • 7,587
6 votes
Accepted

Can't find the IP address of regular visitor which creates %100 Bounce Rate on my site!

This problem is related to spam actions against your GA account. Neither the WP plugin nor the php code would be able to record ghost visitor's (aka Ghost referral) IP address because they are hitting ...
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  • 2,378
6 votes
Accepted

Can you hide a server IP address using Cloudflare?

You can host your website anywhere with good connectivity and get good rankings for a particular area - Google likely keys off the domain suffix more then the IP address (which hints at actual ...
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  • 5,845
5 votes

Why is "googlehosted.com" in the DNS records for our website after signing up for DDOS protection?

This is an old question but I recently ran into this issue and see that your question wasn't really answered. The *.dv.googlehosted.com CNAME record is for Google Apps, now known as GSuite, to verify ...
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5 votes

How to identify if IP address is really google's IP

First things first. There are two domain names that we are talking about; Google.com and Googlebot.com. Doing a reverse look-up for Google.com would be misleading. Here is an answer I gave quite a ...
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  • 32.5k
5 votes
Accepted

Block ip range using htaccess

IP ranges are specified in .htaccess using CIDR notation. The simplest rule that you could use would be Deny from 159.138.0.0/16 Which would block slightly too much: CIDR Range 159.138.0.0/16 ...
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4 votes
Accepted

Can I detect the IP address and location of visitors to my web application who are behind a proxy?

Proxies run by national governments and ISPs will generally pass the carrier grade NAT (or in some cases, global) IPv4 address in the X-Forwarded-For header. Some proxies, such as those used by some ...
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4 votes

Can DNS point to specific port?

What you are looking for is Dynamic DNS (DDNS) with port forwarding and a majority of DDNS service providers are offering port forwarding as well. You can then set up your domain something.something....
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4 votes
Accepted

Website opening both on domain name and IP. Is that a problem?

You may run into issues with duplicate content. You probably do not want to create canonical tags when they are not necessary. Too much work. You can try a redirect: RewriteCond %{HTTP_HOST} ^192\.0\...
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  • 32.5k
4 votes

The number of sites on a shared host

You shouldn't worry as it doesn't mean anything. Shared IP addresses are common and the norm. Having a large number of sites sharing and IP address doesn't indicate much. If the host has a beefy ...
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  • 85.8k
4 votes

Is it possible to see my site's real IP address if I'm using a CDN like CloudFlare?

There are a few smart ways, so in theory it is sometimes possible, but only with a bad admin configuration. In practice it's about impossible. For example, try getting the IP address of a site's DNS ...
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  • 2,343
4 votes

Setting reverse PTR

PTR records can be set by your service provider. If the IP is delegated into their ownership, they are the ones who can set the PTR record.
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  • 562
4 votes

Does Using WordPress MultiSite for Similar Sites on Same IP Hurt SEO?

Okay. This is a bit of a tough one. But I will dig in a bit so that hopefully, things will be clear. Google figured out years ago that spam sites are all related and that relationships between sites ...
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  • 32.5k
4 votes
Accepted

When I search on my domain name in a browser, the IP address is returned for my site hosted with GoDaddy and NGINX

Add this block to your NGINX config: server { listen 80; server_name here.your.ip.address; rewrite ^ http://example.com$request_uri? permanent; }
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  • 9,599
4 votes

How can I find my website's IP address?

There are multiple ways: If you're in Firefox, open the console (F12), go to the tab [Network], click one of the resources. Then on the right there's "External IP". When you use FireBug, tab [Net], ...
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  • 6,736

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