If you are not sure if the website you want to visit is safe, you can check it out here. Enter the address (url) of the website and see the invisible elements, such as a header or meta data.
site address:nationalfuelgas.com/news/10-5-17+-+Teleconference+Announcement_2017_10_05_14_14.pdf redirected to: nationalfuelgas.com/404.asp...
favicon.ico:
site title: Untitled Page
Url ContentHyperText Markup Language (HTML)
MIME Type / Internet Media Typetext/html
MIME Type text
File Extension.html
More Details (link to:)Wikipedia: HTML
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 302 Redirect
Cache-Control no-cache; private
Content-Type text/html; charset=UTF-8
Location htt????/nationalfuelgas.com/404.aspx
Server Microsoft-IIS/8.5
Strict-Transport-Security max-age=31536000; includeSubDomains
X-XSS-Protection 1
Date Tue, 13 Nov 2018 18:05:00 GMT
Connection close
Content-Length 159
HTTP/1.1 200 OK
Cache-Control private,no-cache; private
Content-Type text/html; charset=utf-8
Server Microsoft-IIS/8.5
Set-Cookie ASP.NET_SessionId=gxn5wiu2cf10dwbui52j5ruz; path=/; HttpOnly
X-AspNet-Version 2.0.50727
Strict-Transport-Security max-age=31536000; includeSubDomains
X-XSS-Protection 1
Date Tue, 13 Nov 2018 18:05:00 GMT
Content-Length 5367

Load Info

page size5367
load time (s)0.700872
redirect count1
speed download7657
server IP205.235.175.200


* all occurrences of the string "http://" have been changed to "htt???/"