Robtex

Up: 81.252.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 81.253.0.0/17
Down right: 81.253.128.0/17

IP	Type	Hostname
81.253.129.137	A	ae40-0.niidf101.paris3earrondissement.francetelecom.net
81.253.131.1	A+PTR	ae42-3003.ncpap101.pointeapitre.francetelecom.net
81.253.131.10	PTR	so-5-0-3-0.ncidf205.aubervilliers.francetelecom.net
81.253.149.1	A+PTR	dns-adsl-gpe3-l.orange.fr
81.253.149.2	A+PTR	dns-adsl-gpe4-l.orange.fr
81.253.149.3	A+PTR	dns-rtc-gpe3-l.orange.fr
81.253.149.4	A	dns-rtc-gpe4-l.orange.fr
81.253.206.78	A	tvep.ena1.orange.fr
81.253.207.77	A	tvdatacollector.ena1.orange.fr
81.253.234.10	PTR	lag-2-816.nsmp1.neuilly.marne.raei.francetelecom.net
81.253.234.34	PTR	lag-2-816-orlp1.orleans.raei.francetelecom.net