some info collected from RIPE database (the european ip number authority)
database data shown is in 'RPSL' format ( https://en.wikipedia.org/wiki/Routing_Policy_Specification_Language ) ; basically RIPE's way of organizing their information, which is different from ICANN (american ip adress authority) (so the whois command returns differently structured info depending on where an IP or organisation is registered…)
IP ranges
ripe is all about keeping track of ip address ranges, so tried those first – ripe database website has a searchtext (though it doesnt goes to search very deep, so it's difficult to get a full overview of things)
inetnum: 80.67.181.0 - 80.67.181.255 netname: NEUTRINET-NET descr: Association Neutrinet country: BE org: ORG-NA658-RIPE admin-c: NEU4-RIPE tech-c: NEU4-RIPE status: ASSIGNED PA mnt-by: Gitoyen-NCC mnt-routes: Neutrinet-MNT mnt-routes: Gitoyen-NCC mnt-domains: Neutrinet-MNT mnt-domains: Gitoyen-NCC notify: noc@gitoyen.net notify: contact@neutrinet.be created: 2014-04-21T23:21:02Z last-modified: 2020-11-08T22:13:04Z source: RIPE
notice this IPv4 range's 'status' is 'assigned PA' : https://www.ripe.net/publications/docs/ripe-733 which is an important detail for the operation of a shared datacenter, as neutrinet cannot specify an abuse-contact to a specific ip address (or range of ip-addresses)
https://apps.db.ripe.net/db-web-ui/lookup?source=ripe&key=2001:913:1000::%2F36&type=inet6num
inet6num: 2001:913:1000::/36 netname: NEUTRINET-IPV6 descr: Neutrinet ISP Network Allocation country: BE org: ORG-NA658-RIPE admin-c: NEU4-RIPE tech-c: NEU4-RIPE status: ALLOCATED-BY-LIR mnt-by: GITOYEN-NCC mnt-by: Neutrinet-MNT mnt-routes: Gitoyen-NCC mnt-routes: Neutrinet-MNT notify: noc@gitoyen.net notify: noc@neutrinet.be created: 2014-04-21T23:21:02Z last-modified: 2020-10-28T20:00:05Z source: RIPEo
status code on this ipv6 ranges is from another can-of-worms, some info here https://www.ripe.net/publications/ipv6-info-centre/deployment-planning/obtain-and-register-ipv6 but i didnt read it.
neutrinet organisation
clicking through on the ripe database website through some fields
https://apps.db.ripe.net/db-web-ui/lookup?source=ripe&key=ORG-NA658-RIPE&type=organisation
organisation: ORG-NA658-RIPE org-name: Neutrinet ASBL org-type: OTHER address: rue des trois ponts, 108 address: 1060 Brussels address: Belgium e-mail: noc@neutrinet.be notify: noc@neutrinet.be abuse-c: AR20661-RIPE mnt-ref: Neutrinet-MNT mnt-ref: Gitoyen-NCC mnt-by: Neutrinet-MNT created: 2014-04-15T13:52:03Z last-modified: 2020-10-31T10:26:26Z source: RIPE
https://apps.db.ripe.net/db-web-ui/lookup?source=ripe&key=Neutrinet-MNT&type=mntner
mntner: Neutrinet-MNT descr: Neutrinet ASBL/VZW admin-c: NEU4-RIPE tech-c: NEU4-RIPE upd-to: noc@neutrinet.be auth: PGPKEY-CBBA86C4 auth: SSO# Filtered notify: noc@neutrinet.be mnt-by: Gitoyen-NCC mnt-by: Neutrinet-MNT created: 2014-04-15T13:48:34Z last-modified: 2020-10-28T19:46:16Z source: RIPE# Filtered
https://apps.db.ripe.net/db-web-ui/lookup?source=ripe&key=NEU4-RIPE&type=role
role: Neutrinet NOC address: rue des trois ponts, 108 address: 1060 Brussels address: Belgium e-mail: noc@neutrinet.be notify: noc@neutrinet.be nic-hdl: NEU4-RIPE mnt-by: Neutrinet-MNT mnt-by: Gitoyen-NCC created: 2020-10-28T19:35:27Z last-modified: 2020-10-31T10:24:33Z source: RIPE
https://apps.db.ripe.net/db-web-ui/lookup?source=ripe&key=AR20661-RIPE&type=role
role: Abuse-C Role nic-hdl: AR20661-RIPE org: ORG-NA658-RIPE abuse-mailbox: abuse@neutrinet.be mnt-by: Neutrinet-MNT address: 31 Rue de Nieuwenhove address: 1180 Brussels address: Belgium e-mail: abuse@neutrinet.be created: 2014-04-15T13:57:32Z last-modified: 2014-04-15T13:57:32Z source: RIPE
people
https://apps.db.ripe.net/db-web-ui/lookup?source=ripe&key=THA23-RIPE&type=person
person: Frederic Durieux - Tharyrok address: rue de wautier 121 address: 1020 Laken (Belgium) phone: +32470828135 nic-hdl: THA23-RIPE mnt-by: Neutrinet-MNT created: 2020-10-16T20:56:30Z last-modified: 2020-10-17T09:08:02Z source: RIPE
https://apps.db.ripe.net/db-web-ui/lookup?source=ripe&key=PGPKEY-CBBA86C4&type=key-cert
key-cert: PGPKEY-CBBA86C4 method: PGP owner: Frédéric Durieux <frederic.durieux@gaatech.be> owner: Tharyrok <lghs@tharyrok.eu> owner: Tharyrok <dev@tharyrok.eu> owner: Frédéric Durieux <fred@gaatech.be> owner: Tharyrok <contact@tharyrok.eu> owner: Frédéric Durieux <frederic.durieux@tharyrok.eu> owner: Tharyrok <neutrinet@tharyrok.eu> owner: Frédéric Durieux <frederic.durieux@goldenpalace.be> fingerpr: 1E65 A343 3078 EDDB D41F 26A2 E373 9989 CBBA 86C4 admin-c: THA23-RIPE mnt-by: Neutrinet-MNT created: 2020-10-16T21:05:31Z last-modified: 2020-10-16T21:05:31Z source: RIPE certif: -----BEGIN PGP PUBLIC KEY BLOCK----- certif: certif: mQINBFq3bawBEAC5xpzEwOAVSBCyp9pk9595702fMzyYh5RNscYdZkNORnpLBFe7 certif: R5VWwG5MWBfzDOf7FODqqaCu12KLZu5w80PDngGapV7AAtrbvHkok2gnA7Sn9dIO certif: 0tDUpCzzEihZSENXVrv7LweLhmUejAjkHdS/vLxWBFI7qncd+IGSskUVuxE0cGQK certif: OU3osithMOrozO6YCAG/UTQUDuSvfhqUTXZ0FJHjqgcGtECS+z0zHhrS9gtGIXe8 certif: Pg7yN69+iVBVEluZIsO7HbNOe5sJChBVCIyVp8vmvuAAD2XFnh5RfmfDcgyNp8Js certif: A8ZBTmNQM3XACzD1Dlxrqh706dyMTAT4jd0E7qPV4+x2uzPyhdTRsIV7zT4tDAhH
https://apps.db.ripe.net/db-web-ui/lookup?source=ripe&key=WDS20-RIPE&type=person
person: Wannes De Smet address: Gebroeders Vandeveldestraat 1D address: 9000 Gent address: Belgium phone: +32 1 00 00 00 e-mail: wannes@neutrinet.be nic-hdl: WDS20-RIPE mnt-by: Neutrinet-MNT created: 2014-04-15T13:48:34Z last-modified: 2014-04-15T14:09:05Z source: RIPE
reverse dns lookup
RIPE maintains the .arpa DNS domain to allow for reverse dns lookups;
https://apps.db.ripe.net/db-web-ui/lookup?source=ripe&key=181.67.80.in-addr.arpa&type=domain
domain: 181.67.80.in-addr.arpa descr: Neutrinet reverse IPv4 admin-c: WDS20-RIPE tech-c: WDS20-RIPE zone-c: WDS20-RIPE nserver: ns1.neutrinet.be nserver: ns2.neutrinet.be mnt-by: Neutrinet-MNT created: 2015-01-26T00:38:52Z last-modified: 2015-01-26T00:38:52Z source: RIPE
https://apps.db.ripe.net/db-web-ui/lookup?source=ripe&key=1.3.1.9.0.1.0.0.2.ip6.arpa&type=domain
domain: 1.3.1.9.0.1.0.0.2.ip6.arpa descr: Neutrinet reverse IPv6 admin-c: WDS20-RIPE tech-c: WDS20-RIPE zone-c: WDS20-RIPE nserver: ns1.neutrinet.be nserver: ns2.neutrinet.be mnt-by: Neutrinet-MNT created: 2015-01-26T00:43:07Z last-modified: 2015-01-26T00:43:07Z source: RIPE
some notes
RIPE checks dns server ip's
https://www.ripe.net/manage-ips-and-asns/db/support/configuring-reverse-dns
configure your DNS servers in such a way that you will pass all the tests that we will perform. Here are some recommendations to help you:
- Make sure you set up at least two name servers that are authoritative for the zone
- Ensure that the servers are at least in different subnets, but preferably in different networks that are geographically distributed
reverse lookup still lists wannes as contact;
don't know if WDS20-RIPE still reads his emails ? 
but changing reverse ip info needs second nameserver up & running (in a different subnet..) / TODO: check wth tharyrok if i understood this correctly…