DNS assignment is done through DHCP. If your controller is giving out DHCP addresses, then check the scope: show running-config | begin "ip dhcp pool" Look for the dns-server entry for the respective scope. ip dhcp pool vlan10 default-router 10.10.10.1 dns-server 4.2.2.2 4.2.2.1 domain-name domain.com lease 0 6 0 0 network 10.10.10.0 255.255.255.0
Oct 22, 2008 · 4.2.2.1 and 4.2.2.4 are level 3 customer dns servers. Easily number in the hundreds. 8.8.8.8 is google which I couldn't even guess, but over a thousand is a conservative idea. I think that's off by an order of magnitude. Here's a list of locations Google has anycast servers on. It's unlikely they spread those broadcast domains beyond a single 4.2.2.4 همه برای شرکت sun بود و 8.8.8.8 8.8.4.4 برای شرکت گوگل است این سرورها سرویس dns می دهند. یعنی تبدیل Google also operates an open DNS at 8.8.8.8 and 8.8.4.4. The DNS is a lookup table, it changes a domain name to an IP address for computers to work properly. Think of it as a big "phone book" for the internet. You look for "Yahoo.com" a DNS server somewhere tells your system the nearest IP for you to use and sends that information to your system. DNS cache poisoning attack site.bl it pl - 2011-09-16 Level 3 Communications' public DNS servers 4.2.2.2-4.2.2.6 - 2012-05-24 Anyone know what this address is. Jul 13, 2016 · 4.2.2.1 is one of the earliest DNS servers that were hosted by BBNplanet back in the mid-90s during the birth of the Internet. It later was part of GTE internetworking when they acquired BBNplanet, was briefly part of Verizon when BellAtlantic acq
There are several reasons why you may want to use alternative DNS servers: Speed up your web browsing; Improving your security; Backup solution when your ISP servers are down. Here is a list of Free public DNS servers. Google Public DNS Google Public DNS - Free DNS server list. # For IPv4: nameserver 8.8.8.8 nameserver […]
Level3 DNS & OpenDNS generally is fewer hops (6-10) away than Google DNS, which for some asinine/insane reason is generally 10-15 hops away with erratic latency along the way. level 2 -1 points · 5 years ago Mar 20, 2020 · The best free public DNS servers include Google, Quad9, OpenDNS, Cloudflare, CleanBrowsing, Verisign, Alternate DNS, and AdGuard DNS. 4.2.2.4, and/or 4.2.2.5, but Mar 04, 2014 · I've been using Cloudflare's DNS: 1.1.1.1 as my primary DNS for almost about 40 days now, and can definitely say it's actually, noticeably faster than most other DNS you'll find in this discussion.
Mar 04, 2014 · I've been using Cloudflare's DNS: 1.1.1.1 as my primary DNS for almost about 40 days now, and can definitely say it's actually, noticeably faster than most other DNS you'll find in this discussion.
4.2.2.4 4.2.2.5 All are "public" DNS servers hosted by Verizon.net (although the rDNS for 4&5 indicate Genuity.net -- another incorrect PTR record. But -- the REAL reason for my comment is that users having entered any of these DNS servers on their systems MAY be an indication of: Dec 30, 2019 · CenturyLink makes this list in 2020 because their speeds and their reputation both supersede theme, but we hope to see an improved user interface on their site sometime soon. CenturyLink DNS uses 209.244.0.3 and 209.244.0.4, as well as on 4.2.2.1, 4.2.2.2, 4.2.2.3 and 4.2.2.4. DNS lookup tool (DNS tester) prints DNS records (A, AAAA, CNAME, NS, SOA, MX, TXT) for a given domain. For domains using geo aware DNS servers, displayed data will depend on the ip address of the DNS client. Please remember that changes to the DNS configuration may take hours or even days to propagate around the world. Uma vez que você precisa de DNS antes de poder usar qualquer coisa que não seja endereços IP na Internet, pode ser útil para testar ou configuração inicial. Antes do Google começar a fazer uso de seu serviço de DNS público em 8.8.8.8, o 4.2.2.2 já era normalmente muito rápido, muitas pessoas usaram como seu servidor DNS padrão. Jun 02, 2020 · Free DNS Servers. I usually pick two DNS services (Google and OpenDNS) but there are like a gazillion DNS service providers out there. You can pick them from this list here. Google: 8.8.8.8, 8.8.4.4. OpenDNS: 208.67.222.222, 208.67.220.220. You enter them as it is in the DNS field. DNS Changes Sometimes Fix Wi-Fi Issues on iPhone DNS Lookup Tool. The UltraTools DNS Lookup provides a report on DNS records for a specified domain or hostname. This UltraTools DNS tool performs an authoritative DNS lookup and provides details about common resource record types for root server, TLD server and Nameserver information