lpbkdotnet<p>If you're interested in this sort of thing (and who wouldn't be?!)</p><p>The whole notebook full of late 1950s UK telephone routing codes is online as a pdf here: <a href="https://paulseward.com/downloads/Telephony_Phreaking_Archive/TLA-FDY-TKZ.pdf" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://</span><span class="ellipsis">paulseward.com/downloads/Telep</span><span class="invisible">hony_Phreaking_Archive/TLA-FDY-TKZ.pdf</span></a></p><p>An OCR version will follow at some point in the handwavy future when I get around to it (if I don't forget).</p><p><a href="https://mstdn.social/tags/phreaking" class="mention hashtag" rel="tag">#<span>phreaking</span></a> <a href="https://mstdn.social/tags/preak" class="mention hashtag" rel="tag">#<span>preak</span></a> <a href="https://mstdn.social/tags/telephoneExchange" class="mention hashtag" rel="tag">#<span>telephoneExchange</span></a> <a href="https://mstdn.social/tags/strowger" class="mention hashtag" rel="tag">#<span>strowger</span></a> <a href="https://mstdn.social/tags/phoneExchange" class="mention hashtag" rel="tag">#<span>phoneExchange</span></a> <a href="https://mstdn.social/tags/telecom" class="mention hashtag" rel="tag">#<span>telecom</span></a> <a href="https://mstdn.social/tags/telecoms" class="mention hashtag" rel="tag">#<span>telecoms</span></a> <a href="https://mstdn.social/tags/telecomHistory" class="mention hashtag" rel="tag">#<span>telecomHistory</span></a> <a href="https://mstdn.social/tags/telecomsHistory" class="mention hashtag" rel="tag">#<span>telecomsHistory</span></a> <a href="https://mstdn.social/tags/phone" class="mention hashtag" rel="tag">#<span>phone</span></a> <a href="https://mstdn.social/tags/telephone" class="mention hashtag" rel="tag">#<span>telephone</span></a></p>