RFC 2317 reverse DNS - have I done it right?

[peter]

Finally found an ISP who knows how to do this, and set it up, but I'm
confused with the result from DNSStuf.com below (IP range is
81.187.228.192/27)...

81.187.228.192 - BOGUS [success=1 timeout=0 rcode=0 ancount=2
type=CNAME] (192.228.187.81.in-addr.arpa)
81.187.228.193 - BOGUS [success=1 timeout=0 rcode=0 ancount=2
type=CNAME] (193.228.187.81.in-addr.arpa)
81.187.228.194 - BOGUS [success=1 timeout=0 rcode=0 ancount=2
type=CNAME] (194.228.187.81.in-addr.arpa)
81.187.228.195 - BOGUS [success=1 timeout=0 rcode=0 ancount=2
type=CNAME] (195.228.187.81.in-addr.arpa)
81.187.228.196 - BOGUS [success=1 timeout=0 rcode=0 ancount=2
type=CNAME] (196.228.187.81.in-addr.arpa)
81.187.228.197 - PTR record does not exist
81.187.228.198 - PTR record does not exist
81.187.228.199 - PTR record does not exist
81.187.228.200 - BOGUS [success=1 timeout=0 rcode=0 ancount=2
type=CNAME] (200.228.187.81.in-addr.arpa)
81.187.228.201 - BOGUS [success=1 timeout=0 rcode=0 ancount=2
type=CNAME] (201.228.187.81.in-addr.arpa)
81.187.228.202 - BOGUS [success=1 timeout=0 rcode=0 ancount=2
type=CNAME] (202.228.187.81.in-addr.arpa)
81.187.228.203 - PTR record does not exist
etc

I was expecting to see the machine names at the addresses wit hthe
BOGUS lines.
A reverse lookup with dig gives me this result...

%dig -x 81.187.228.196

; <<>> DiG 9.2.1 <<>> -x 81.187.228.196
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34887
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;196.228.187.81.in-addr.arpa.   IN      PTR

;; ANSWER SECTION:
196.228.187.81.in-addr.arpa. 3600 IN    CNAME  
196.192-223.228.187.81.in-addr.arpa.
196.192-223.228.187.81.in-addr.arpa. 3600 IN PTR mx1.pandasys.net.

;; AUTHORITY SECTION:
192-223.228.187.81.in-addr.arpa. 3600 IN NS     ns0.gradwell.com.
192-223.228.187.81.in-addr.arpa. 3600 IN NS     ns1.pandasys.net.

;; Query time: 351 msec
;; SERVER: 10.69.0.1#53(10.69.0.1)
;; WHEN: Thu Feb 12 09:52:24 2004
;; MSG SIZE  rcvd: 149

So the reverse lookup is working ok, but have I done something wrong?
Just for completeness, here's the reverse zone file...

;;      $ORIGIN 192-223.228.187.81.in-addr.arpa.
$TTL    3600
@       IN      SOA     ns1.pandasys.net.       admin.pandasys.net. (
                                2004021001      ; serial
                                7200            ; refresh 
                                3600            ; retry
                                4W              ; expire
                                1D )            ; minimum 
 
                NS      ns1.pandasys.net.
                NS      ns0.gradwell.com.

193     PTR     router.pandasys.net.
194     PTR     pennan.pandasys.net.
195     PTR     ns1.pandasys.net.
196     PTR     mx1.pandasys.net.

200     PTR     www.pandasys.net.
201     PTR     webmail.pandasys.net.
202     PTR     music.pandasys.net.

Thanks for any advice,
Peter