Questions tagged [as-number]

14 questions
16
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3 answers

How IP addresses are mapped to Autonomous System Numbers?

How are IP addresses mapped to Autonomous System Numbers (ASNs)? Is there a reference database for it? Then how are these Autonomous Systems geographically located?
Parsa
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6
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1 answer

Linux "traceroute -A" (AS path lookup) equivalent for Win XP?

Can anyone recommend a Win XP command-line traceroute implementation providing a function equivalent to the Linux "traceroute -A" option, which includes in its output the BGP AS number (Autonomous System) for each hop traversed ? Thanks
user177934
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4
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1 answer

Is it safe to assume that two hosts on the same /24 network belong to the same AS-number?

Assume two IP-addresses in the same /24 network (say 1.2.3.*): 1.2.3.X 1.2.3.Y Is it safe to assume that these two hosts belong to the same AS-number? If not, roughly how often is that the case that they do not belong to the same AS?
knorv
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3
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1 answer

32-bit AS number. Where can it be tricky?

Can 32-bit ASN be dangerous/tricky in any way? We are currently implanting BGP in our network. One of the uplinks has emphasized that their ASN is 32-bit. Ours is 32-bits as well. What is it I should be paying attention to when dealing with 32-bit…
facha
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2
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2 answers

Why there is AS number mismatch?

I've noticed that various services for this IP 85.222.136.21 returns different AS numbers. For example, http://bgp.he.net/ip/85.222.136.21#_ipinfo says AS14340, while on the Whois section, there it says AS15982. Why is that? I've also asked my…
Dzh
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How can one update BGP ASN on an Azure Virtual Network Gateway?

I have an existing Azure Virtual Network Gateway I'm attempting to reconfigure for use for BGP, per https://azure.microsoft.com/en-us/documentation/articles/vpn-gateway-bgp-resource-manager-ps/ . However, I cannot find how to change the default…
cjp
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2
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4 answers

Configuring firewall for Google Cloud Messaging - ASN 15169

We have a mobile application that uses Google Cloud Messaging. This means our internal server has to communicate with Google's GCM server at android.googleapis.com on a specific port. Our IT team is reluctant to open this outgoing port to any…
Jeff
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2
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2 answers

How do I get an AS-number?

Where and how to get an AS-number? What I need? How much does it cost?
NARKOZ
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1
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1 answer

Users with Google Proxy IPs

On my website, we log user IPs to ensure we're able to properly moderate and prevent abuse. We are aware of Proxies, such as Opera VPN, Tor, and others. However, I am not aware of Google itself having a Proxy, other than the "Data Saver"…
Nuno
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0 answers

NGINX: Map IP to ASN

in Preparation for GDPR I want my NGINX to not log IP's any longer, but log the AS Number. To map the ip to an AS number, I would use the BGP datasets from Ripe, and import them in an MySQL table. But: How do I map the Data inside NGINX? Is the…
margau
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1 answer

Remove AS that's falsely associated with our IP from email block list

When I try to send email from our email server to hotmail or outlook.com I get 550 5.7.1 Unfortunately, messages from [216.x.x.x] weren't sent. Please contact your Internet service provider since part of their network is on our block list (AS3150).…
user3280964
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1 answer

AS number with two isolated networks

The company I work for have branches all over Europe and data centers in Sweden and Germany. In Sweden all sites are connected to each other via point-to-point links as well as each connected to Internet. Outside Sweden the sites are only connected…
Par S
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1 answer

SpamAssassin ASN Plugin

I've got spamassassin 3.4.0 setup to use Mail::SpamAssassin::Plugin::ASN. cpan confirms that it is installed, and dig confirms that I can get the ASN TXT records from http://routeviews.org. My local.cf has this section: ##### Autonomous System…
justinzane
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2 answers

BGP/ASN: Network without own backbone?

I'm trying to understand the principles of routing in the internet, especially regarding (E)BGP. So far, I understand the situation of a "typical" ISP (e.g. with the ASN 2) that has its own backbone, and peering/transit/customer interconnections at…
lxgr
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