nanog mailing list archives

Re: More ASN collissions


From: Rene Wilhelm <wilhelm () ripe net>
Date: Mon, 14 Dec 2009 01:26:45 +0100

Florian Weimer wrote:
* Rene Wilhelm:

AS3745 is not a duplicate ASN assignment either. Like AS35868 the entry at
whois.ripe.net is a user created object in the RIPE routing registry, not
an assignment by RIPE NCC.

How can you tell one from the other?  Is the lack of an org: attribute
reliable?

The info is in the as-block object which whois.ripe.net returns in addition to the
aut-num object when you do a default query for an AS number.

For example for as43210 you get this:


as-block:       AS43008 - AS44031
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are further assigned to network
remarks:        operators in the RIPE NCC service region. AS
remarks:        assignment policy is documented in:
remarks:        <http://www.ripe.net/ripe/docs/asn-assignment.html>
remarks:        RIPE NCC members can request AS Numbers using the
remarks:        form available in the LIR Portal or at:
remarks:        <http://www.ripe.net/ripe/docs/asnrequestform.html>
org:            ORG-NCC1-RIPE
admin-c:        CREW-RIPE
tech-c:         RD132-RIPE
mnt-by:         RIPE-DBM-MNT
mnt-lower:      RIPE-NCC-HM-MNT
source:         RIPE # Filtered

[...]


Only AS numbers which are covered by "RIPE NCC ASN blocks" have been assigned by RIPE NCC or transferred to RIPE NCC (like AS1707).

-- Rene











Current thread: