NAME

       Net::DNS::RR::NSEC - DNS NSEC resource record

SYNOPSIS

           use Net::DNS;
           $rr = Net::DNS::RR->new( 'name NSEC nxtdname typelist' );

DESCRIPTION

       Class for DNSSEC NSEC resource records.

METHODS

       The available methods are those inherited from the base class augmented by the type-specific methods
       defined in this package.

       Use of undocumented package features or direct access to internal data structures is discouraged and
       could result in program termination or other unpredictable behaviour.

   nxtdname
           $nxtdname = $rr->nxtdname;
           $rr->nxtdname( $nxtdname );

       The Next Domain field contains the next owner name (in the canonical ordering of the zone) that has
       authoritative data or contains a delegation point NS RRset.

   typelist
           @typelist = $rr->typelist;
           $typelist = $rr->typelist;

       typelist() identifies the RRset types that exist at the NSEC RR owner name.  When called in scalar
       context, the list is interpolated into a string.

   typemap
           $exists = $rr->typemap($rrtype);

       typemap() returns a Boolean true value if the specified RRtype occurs in the type bitmap of the NSEC
       record.

   match
           $matched = $rr->match( 'example.foo' );

       match() returns a Boolean true value if the canonical form of the name argument matches the canonical
       owner name of the NSEC RR.

   covers
           $covered = $rr->covers( 'example.foo' );

       covers() returns a Boolean true value if the canonical form of the name, or one of its ancestors, falls
       between the owner name and the nxtdname field of the NSEC record.

   encloser, nextcloser, wildcard
           $encloser = $rr->encloser( 'example.foo' );
           print "encloser: $encloser\n" if $encloser;

       encloser() returns the name of a provable encloser of the query name argument obtained from the NSEC RR.

       nextcloser() returns the next closer name, which is one label longer than the closest encloser.  This is
       only valid after encloser() has returned a valid domain name.

       wildcard() returns the unexpanded wildcard name from which the next closer name was possibly synthesised.
       This is only valid after encloser() has returned a valid domain name.

COPYRIGHT

       Copyright (c)2001-2005 RIPE NCC.  Author Olaf M. Kolkman

       Portions Copyright (c)2018-2019 Dick Franks

       All rights reserved.

       Package template (c)2009,2012 O.M.Kolkman and R.W.Franks.

LICENSE

       Permission to use, copy, modify, and distribute this software and its documentation for any purpose and
       without fee is hereby granted, provided that the original copyright notices appear in all copies and that
       both copyright notice and this permission notice appear in supporting documentation, and that the name of
       the author not be used in advertising or publicity pertaining to distribution of the software without
       specific prior written permission.

       THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
       LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
       EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
       IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
       THE USE OR OTHER DEALINGS IN THE SOFTWARE.

SEE ALSO

       perl Net::DNS Net::DNS::RR RFC4034 <https://tools.ietf.org/html/rfc4034> RFC9077
       <https://tools.ietf.org/html/rfc9077>

perl v5.38.2                                       2024-02-27                            Net::DNS::RR::NSEC(3pm)