Robtex

Up: 64.98.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 64.99.0.0/17
Down right: 64.99.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.99.0.34	PTR	ffw01b-v200.bra.tucows.net
64.99.0.133	A	lb01.bra.tucows.net
64.99.0.135	A	lb10.bra.tucows.net
64.99.0.137	A	lb10b.bra.tucows.net
64.99.0.188	A	lb01.c.prod.tucows.net
64.99.1.1	A+PTR	ffw02a-v439.bra.tucows.net
64.99.1.5	A+PTR	zabbix.prod.tucows.net
64.99.1.12	A+PTR	zabbix.qa.tucows.net
64.99.1.35	A	daktu.com
64.99.4.11	A+PTR	footprints-outbound.tucows.com
64.99.8.2	PTR	csr01.bra.tucows.net
64.99.20.30	A	earthranger.org
64.99.36.33	A	raproxy-2.opensrs.net
64.99.36.37	A	hover.pp-2.tucows.com
64.99.49.64	A	registerca.registrarmail.net
64.99.49.80	A	tradeindia.registrarmail.net
64.99.49.88	A	tendollarca.registrarmail.net
64.99.49.94	A	switchmedia.registrarmail.net
64.99.51.31	A	yummienames.com
64.99.51.31	A	opensrs.tv
64.99.51.31	A	yummynames.biz
64.99.51.32	PTR	ssl-certificate.info
64.99.51.33	PTR	referrals.tucwos.com
64.99.51.41	PTR	www.tucowsdomains.com
64.99.53.64	A+PTR	endurance.opensrs.net
64.99.53.64	A	whois.domain.com
64.99.53.64	A	endurance.registrarmail.net
64.99.53.65	PTR	domainprivacygroup.com
64.99.53.65	A	www.domainprivacygroup.com
64.99.53.70	PTR	endurance.registrarmail.net
64.99.58.10	A	limitedsports.com
64.99.58.10	A	*.mp3-charts.com
64.99.58.10	A	zf7.com
64.99.60.10	A+PTR	kpnims.opensrs.net
64.99.60.11	A+PTR	kpncm.opensrs.net
64.99.60.12	A+PTR	kpnkio.opensrs.net
64.99.60.13	PTR	easyspace.opensrs.net
64.99.60.13	A	transfers.easyspace.com
64.99.62.11	A+PTR	whois.opensrs.net
64.99.62.11	A	whois.big-dns.com
64.99.62.35	A+PTR	contactprivacy.email
64.99.62.35	A	www.contactprivacy.email
64.99.63.12	A+PTR	papaki.opensrs.net
64.99.63.12	A	whois.papaki.gr
64.99.63.14	A	admin.mindsandmachines.com
64.99.63.15	A+PTR	paragon.opensrs.net
64.99.64.3	A	slambuster.com
64.99.64.5	A	bigip3snat.tucows.com
64.99.64.31	A	weavver.net
64.99.64.31	A	404tech.com
64.99.64.32	PTR	sfwebfor.tucows.com
64.99.66.11	A+PTR	domainshop-1.dk
64.99.66.14	A	order-area.com
64.99.66.16	A	domains.hostdime.com
64.99.66.18	A	hostpapadomains.com
64.99.67.52	A+PTR	pte.opensrs.net
64.99.80.17	A	www.aeolosgr.com
64.99.80.21	A	ksmith.me
64.99.80.21	A	api.ted.hover.com
64.99.80.22	A	ted.hover.com
64.99.81.21	PTR	bfcs.tucows.com
64.99.82.99	PTR	64-99-82-99.rev.tucows.net
64.99.96.33	A	ns3.hover.com
64.99.96.33	A	dns3.hover.com
64.99.96.33	A	ns3.masanet.org
64.99.96.34	A	ns3.mdnsservice.com
64.99.97.32	A+PTR	ns3.tucows.com
64.99.97.32	A	dns3.tucows.com
64.99.97.32	A	ns3.he.tucows.com
64.99.97.34	PTR	ns3.mdnsservice.com
64.99.97.37	A	ld1.mdnsservice.com
64.99.100.11	A	ns3.securebusinessservices.com
64.99.100.11	A	ns3.transfer-approval.com
64.99.100.11	A	dns3.transfer-approval.com
64.99.119.43	A	dipededesigngroup.ca
64.99.128.5	PTR	lb12a.c.tucows.com
64.99.128.5	A	linuxberg.tucows.com
64.99.128.5	A	upload.tucows.com
64.99.128.6	PTR	lb12a.c.tucows.com
64.99.128.7	PTR	lb12a.c.tucows.com
64.99.128.8	PTR	lb12a.c.tucows.com
64.99.132.250	PTR	mx.abuse.tucows.com
64.99.135.10	A+PTR	tracking.domainadmin.com
64.99.136.142	A	smtprelay-virgin0142.hostedemail.com
64.99.136.143	A	smtprelay-virgin0143.hostedemail.com
64.99.136.163	A	smtprelay-virgin0163.hostedemail.com
64.99.136.164	A	smtprelay-virgin0164.hostedemail.com
64.99.160.198	A+PTR	ns1.qa.systemdns.com
64.99.160.200	PTR	resellers2.qa.tucows.net
64.99.161.198	A+PTR	ns2.qa.systemdns.com
64.99.165.5	A	www.tucows.content.dev.tucows.net
64.99.165.7	PTR	static.dev.tucows.com
64.99.165.7	A+PTR	static.content.dev.tucows.net
64.99.165.10	A	openx.dev.tucows.com
64.99.176.10	PTR	manage.opensrs.net
64.99.176.10	A	manage.opensrs.com
64.99.176.20	A+PTR	approve.domainadmin.com
64.99.176.20	A	domain-verification.squarespace.com
64.99.176.20	A	approvedomainadmin.com
64.99.178.10	A+PTR	farm.domainadmin.com
64.99.178.10	A	randy-maugans-i-iz-a-netelligent-limestone-geekstorage-whore.domainadmin.com
64.99.178.10	A	getgomobi.domainadmin.com
64.99.178.12	PTR	domainadmin.pre.tucows.com
64.99.180.18	A+PTR	smtprelay018.registrarmail.net
64.99.180.19	A+PTR	smtprelay019.registrarmail.net
64.99.180.22	A+PTR	smtprelay022.registrarmail.net
64.99.195.97	PTR	hs-nc-5f6d2ea977-29766-1.tingfiber.com
64.99.222.47	A	lewiscasingcrews.com
64.99.222.48	A	lewiscasingcrews.com
64.99.225.198	A+PTR	c-va-74495bdd55-7752-1.tingfiber.com
64.99.226.125	A+PTR	c-va-de46d13330-110313-1.tingfiber.com
64.99.226.125	A	warsier.com
64.99.238.114	A+PTR	c-va-417c131a4e-15644-1.tingfiber.com