specific IP address on workstation does not allow internet access but can ping web sites

I have 2 IP addresses in our network that if they are assigned via DHCP or I hard code it to the PC, you cannot use a web browser (any browser) to access the internet.
Also cannot use FTP from a command prompt.
These IP addresses are in the DHCP scope. 192.168.1.100 to 192.168.1.200
I can ping web sites, nslookup websites, and tracert web sites with no issue from a command prompt.
I also have no issues with internal web servers or drive mappings.
It is only internet browsing.
No messages on the firewall of this IP being blocked. (can see the pings)
No error messages in DHCP or DNS logs.

At a complete loss as to what is blocking this IP from accessing HTTP and FTP
vbcosupportAsked:
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vbcosupportConnect With a Mentor Author Commented:
ok...turns out it was a corrupt record in our ARP table. The MAC Address for the IP address was not correct. Odd in itself. Refreshed ARP tables and system can now browse the internet.

now to figure out why the records are getting corrupt.

Smart phones and tablets?
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dmwynneCommented:
Just a question, you've assigned these IP addresses to multiple machines and had the same issue?
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vbcosupportAuthor Commented:
Yes.
PCs and Macs also.
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dmwynneCommented:
I'm assuming no proxy server or you would have mentioned it.  Have you tried deleting the PTR and A record in DNS, then run an ipconfig /registerdns from the machine.
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vbcosupportAuthor Commented:
Correct. No Proxy server.
Deleted the records and registered DNS with no success.

:(
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dmwynneCommented:
Can you telnet to google on port 80:

telnet 173.194.36.41 80
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vbcosupportAuthor Commented:
No. I get a line under the command that looks like this and then it goes back to a C:\

telnet 173.194.36.41 80
173.194.36.41... :
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dmwynneConnect With a Mentor Commented:
Do you see anything in firewall for port 80 for this IP?
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vbcosupportAuthor Commented:
Working with firewall company to verify it is or is not an issue there. Will update shortly.
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vbcosupportAuthor Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for vbcosupport's comment #a39699491
Assisted answer: 500 points for dmwynne's comment #a39699005

for the following reason:

dmwynne was a great help in troubleshooting this issue.
Thanks!!
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masnrockCommented:
It is an ip conflict. You might want to kill off any existing leases involving those addresses.
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dmwynneCommented:
I think the user meant to give solution to dmwynne not assisted.
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vbcosupportAuthor Commented:
Weird corruption in ARP table.
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