Yesterday, I faile d(once again) to add enum records for our 0800 number
(BT-owned number) This didn't surprise me, so I ignored it.

While I was on the site I noticed the vast number of allocations that
they claim, so I thought I'd test this against our customer database.
(some 4000 numbers).

The results were somewhat surprising.

There were no records for any geographic number (that bit wasn't
surprising).

All the 0800 numbers have records, as to the 1800 numbers.

On closer inspection, all the 0800 numbers have the same records (as
each other) as do the 1800 numbers).

<customer #>.e164.org. 600 IN NAPTR 100 10 "u" "E2U+SIP"
"!^\\+44800(.*)$!sip:44800\\1@public.sip.magrathea .net!" .
<customer #>.e164.org. 600 IN NAPTR 100 10 "u" "E2U+SIP"
"!^\\+44800(.*)$!sip:44800\\1@freenum.sip.telecomp lete.net!" .
<customer #>.e164.org. 600 IN NAPTR 200 10 "u" "E2U+SIP"
"!^\\+44800(.*)$!sip:44800\\1@selfnet.at!" .

for 0800 numbers and

<customer #>.e164.org. 600 IN NAPTR 200 10 "u" "E2U+SIP"
"!^\\+1800(.*)$!sip:1641641800\\1@sip.tollfreegate way.com!" .
<customer #>.e164.org. 600 IN NAPTR 200 10 "u" "E2U+SIP"
"!^\\+1800(.*)$!sip:1800\\1@tf.voipmich.com!" .

for 1800 numbers.

Our own (BT owned) number has the same 3 listings.

If magrathea et al make money from terminations through them to 0800
numbers, then this looks to me like a bit of a scam.

I would personally rather be able to set my own records for the numbers,
for the obvious reason that anybody connecting to the number using e164
would be doing so without me paying to receive the call.

Can anyone shed any light on this situation?