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mk9pa
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New Contributor

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10 Messages

Friday, March 31st, 2023

Static IP in blocklist due to abuse by other IPs

Hello, recently I have found that my static IP is on the dnsbl-2.uceprotect.net blocklist, which is causing many sites to reject my outgoing HTTP/HTTPS requests including to banks, government sites, etc. This has become quite a problem.

The documentation for this blocklist is at https://www.uceprotect.net/en/index.php?m=7&s=0 and states that being on the level 2 blocklist is not because of abuse from my IP address, but from other IP addresses in the block mine is part of. And, that only the owner of that entire IP block can remove the listing by resolving the abuse from that entire block.

Is this something Comcast can help with?

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1 year ago

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CC_Sheila

Retired Employee

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27 Messages

3 years ago

Hi there! I would love to take a closer look. 

Please send me a private message with your name and address to get started. 

 

To send a Private Message, please click on the chat icon in the top-right corner of the screen, next to the bell icon, and then type or select "Xfinity Support" to initiate a live chat.

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mk9pa

New Contributor

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10 Messages

@Comcast_Sheila​ not sure how to do this, nobody matching Xfinity Support shows up when I try searching. A ComcastBiz_Support entry does show up.

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3 years ago

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CC_Krystal

Contributor

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3 Messages

Not to worry, thank you for letting us know. We got you covered. :)

 Please send us a direct message using the steps below with your full name, business name, full address, and phone number. By clicking the "message" icon in the upper right page of our forum page. Once you click on that, input our shared handle (Comcast Business) to send us a private message.

  • Click "Sign In" if necessary
  • Click the "Direct Message" icon in the top right corner
  • Click the "New message" (pencil and paper) icon
  • The "To:" line prompts you to "Type the name of a person". Instead, type "Comcast Business" there
  • - As you are typing a drop-down list appears. Select "Comcast Business" from that list
  • - An "Comcast Business" graphic replaces the "To:" line
  • Type your message in the text area near the bottom of the window • Press Enter to send it

I no longer work for Comcast.

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3 years ago

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steamedhomer

New Contributor

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6 Messages

3 years ago

Our whole block of staic ip's are on the UCEPROTECTL2/L3 blocklist.

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CC_ChelseaH

Contributor

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28 Messages

You can find the static IP information and details using the steps outlined at the following link: 
https://business.comcast.com/support/article/internet/comcast-business-internet-view-your-static-ip-address
From here, you may be able to determine perhaps why they are listed there. 

I no longer work for Comcast.

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3 years ago

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steamedhomer

New Contributor

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6 Messages

3 years ago

My individual ip's are not blacklisted it is the ip block "50.128.0.0/9" that is the problem this is something Comcast has to fix.

Networks Status Level 1 listed abusers
within the last 7 days		 Impacts in this net
within the last 7 days		 Level 2 Escalation limit
by Impacts		 Optional express delisting
WARNING!
PROBLEM MUST BE FIXED FIRST
TO PREVENT NEW LISTINGS
50.128.0.0/9 LISTED
50
1817
1398

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user_735d9b

New Contributor

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1 Message

3 years ago

Same problem

Networks this IP belongs to

Networks Status Level 1 listed abusers
within the last 7 days		 Impacts in this net
within the last 7 days		 Level 2 Escalation limit
by Impacts		 Optional express delisting
WARNING!
PROBLEM MUST BE FIXED FIRST
TO PREVENT NEW LISTINGS
  173.160.0.0/13 LISTED
8
317
303
Not available at this time.
Listingcounter is still growing !
Check this Range again in 60 Minutes

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SMS

New Contributor

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3 Messages

2 years ago

Did anyone ever get an answer to this.  We are constantly be black listed and cannot send emails to comcast.net.  

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user_99df7e

New Contributor

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1 Message

2 years ago

Did someone get this resolved?

I am experiencing the same issue with my organization. My IP falls in one those ranges that is being blocked by UCEPROTECTL2.

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Comcast_Billie

Official Employee

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114 Messages

@user_99df7e Thank you for reaching out on our Comcast Business Forums. I can understand the frustration if you have a blocked IP. What we recommend is to call our Customer Security Assurance team at 1-888-565-4329 for assistance.

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2 years ago

0

heimdal

New problem solver

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16 Messages

1 year ago

For any others that stumble across this, do an internet search for "uceprotect scam".

You'll see lots of reports that they are effectively set up as a pay to remove and are not a terribly legitimate RBL to be using for blocking IPs.

My Comcast statics have been on the UCEProtect Level 2 db for years.  I've not encountered any issues with mail delivery.

I don't think being listed is a serious concern today.  I also don't think anyone still uses UCEProtect for blocking of IP's.  If you do encounter that, you're more likely to convince whoever that is to stop using UCEProtect than to get your IP removed from the UCEProtect listing.

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SJensen

New Contributor

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1 Message

1 year ago

Same problem here!  We recently moved from Lumen fiber optic to Comcast Business due to an office relocation and had to change our static IP address.  Apparently though, the new static IP address block range that we were assigned from Comcast is listed on the UCEProtect RBL!

Comcast has offered to assign us a new static IP address block but this email thread has me doubtful that we will end up with a new static IP that is not also listed!

UCEPROTECT-Level2

Networks this IP belongs to

Networks Status Level 1 listed abusers
within the last 7 days		 Impacts in this net
within the last 7 days		 Level 2 Escalation limit
by Impacts		 Optional express delisting
WARNING!
PROBLEM MUST BE FIXED FIRST
TO PREVENT NEW LISTINGS
  50.128.0.0/9 LISTED
36
6755
1398

Does anyone out there have a Comcast assigned static IP that is not listed on this UCEProtect RBL??

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Comcast_ThomasD

Official Employee

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49 Messages

Thank you for choosing Xfinity, user_caf0a8! We'd like to speak with you in more detail and follow up with you after the new IP is assigned to ensure you're all set.

Please send us a direct message with your full name, business name, full address, and phone number. By clicking the "message" icon in the upper right page of our forum page. Once you click on that, input our shared handle (Comcast Business) to send us a private message.

 

• Click "Sign In" if necessary

• Click the "Direct Message" icon in the top right corner

• Click the "New message" (pencil and paper) icon

• The "To:" line prompts you to "Type the name of a person". Instead, type "Comcast Business" there

• - As you are typing a drop-down list appears. Select "Comcast Business" from that list

• - An "Comcast Business" graphic replaces the "To:" line

• Type your message in the text area near the bottom of the window

• Press Enter to send it

 

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1 year ago

0