domain report

Is aut.ac.nz a business email?

aut.ac.nz is an education domain: a school, college or university.

GET /v1/check?domain=aut.ac.nzchecked 18 Oct 2026

isBusinessEmail("aut.ac.nz")

true

Education domain — a school or university.

category: education
recommendation: allow
confidence: 93%

Google Workspace: not detected
Microsoft tenant: detected

reasons

Mail setup

Receives mail: Yes
Mail provider: —
SPF: v=spf1 ip4:156.62.0.0/16 ip4:103.151.192.0/23 ip4:103.197.63.200 ip4:103.237.104.0/22 ip4:103.250.241.203 ip4:103.250.241.204 ip4:103.250.242.12 ip4:104.18.20.88 ip4:104.18.21.88 ip4:104.47.0.0/17 ip4:119.9.150.15 ip4:124.198.189.215 ip4:13.238.15.140 ip4:13.238.153.161 ip4:13.54.115.166 ip4:13.54.130.0 ip4:13.54.68.90 ip4:13.55.105.237 ip4:13.55.8.26 ip4:13.75.174.156 ip4:130.248.172.0/24 ip4:130.248.173.0/24 ip4:134.128.64.0/19 ip4:134.128.96.0/19 ip4:139.60.152.0/22 ip4:148.105.0.0/16 ip4:149.72.0.0/16 ip4:15.200.201.185 ip4:15.200.21.50 ip4:15.200.44.248 ip4:150.242.40.93 ip4:157.55.136.93 ip4:159.183.0.0/16 ip4:160.1.62.192 ip4:162.247.216.0/22 ip4:167.89.0.0/17 ip4:168.245.0.0/17 ip4:18.200.192.158 ip4:185.12.80.0/22 ip4:185.225.161.0/24 ip4:185.249.220.0/24 ip4:185.28.196.0/22 ip4:188.172.128.0/20 ip4:192.161.144.0/20 ip4:192.254.112.0/20 ip4:192.28.128.0/18 ip4:198.2.128.0/18 ip4:198.21.0.0/21 ip4:198.37.144.0/20 ip4:199.127.232.0/22 ip4:199.15.212.0/22 ip4:199.255.192.0/22 ip4:202.49.242.1 ip4:202.49.243.52 ip4:202.78.240.226 ip4:202.9.94.90 ip4:204.13.9.184 ip4:204.13.9.185 ip4:204.8.10.114 ip4:205.139.104.0/22 ip4:205.139.105.48/29 ip4:205.201.128.0/20 ip4:206.55.144.0/20 ip4:206.79.6.128/26 ip4:208.117.48.0/20 ip4:208.40.241.140/30 ip4:216.198.0.0/18 ip4:216.221.160.0/19 ip4:216.235.195.0/24 ip4:216.235.196.0/22 ip4:216.235.197.198 ip4:216.235.200.0/21 ip4:216.37.18.6 ip4:223.165.113.0/24 ip4:223.165.115.0/24 ip4:223.165.118.0/23 ip4:223.165.120.0/23 ip4:23.249.208.0/20 ip4:23.251.224.0/19 ip4:24.110.64.0/18 ip4:3.105.94.134 ip4:34.252.205.76 ip4:37.188.97.188 ip4:40.107.0.0/16 ip4:40.92.0.0/15 ip4:50.31.32.0/19 ip4:51.132.24.176 ip4:52.100.0.0/15 ip4:52.102.0.0/16 ip4:52.103.0.0/17 ip4:52.19.235.69 ip4:52.19.41.236 ip4:52.222.62.51 ip4:52.222.73.120 ip4:52.222.73.83 ip4:52.222.75.85 ip4:52.222.89.228 ip4:52.61.91.9 ip4:52.64.34.69 ip4:54.186.193.102 ip4:54.206.1.219 ip4:54.240.0.0/18 ip4:54.240.64.0/18 ip4:54.252.156.126 ip4:54.252.177.62 ip4:54.252.177.71 ip4:54.252.191.67 ip4:54.79.12.56 ip4:64.209.141.221 ip4:64.69.212.0/24 ip4:69.169.224.0/20 ip4:69.5.28.106 ip4:72.3.137.166 ip4:72.3.137.170 ip4:72.3.137.172 ip4:72.3.137.175 ip4:72.3.185.0/24 ip4:72.32.154.0/24 ip4:72.32.177.42 ip4:72.32.217.0/24 ip4:72.32.243.0/24 ip4:76.223.128.0/19 ip4:76.223.176.0/20 ip4:94.236.119.0/26 ip4:98.97.248.0/21 ip6:2404:130:4080::4 ip6:2a01:111:f400::/48 ip6:2a01:111:f403:8000::/51 ip6:2a01:111:f403::/49 ip6:2a01:111:f403:c000::/51 ip6:2a01:111:f403:f000::/52 exists:%{i}._spf.sparkpostmail.com -all
DMARC policy: quarantine

MX records for aut.ac.nz
Priority	MX host
10	kromog2.aut.ac.nz
20	kromog3.aut.ac.nz
30	kromog1.aut.ac.nz

Workspace

Google WorkspaceNot detected
Microsoft 365Tenant only: Microsoft sign-in works, email runs elsewhere · region OC · federated sign-in · IdP other

Detected per company domain from public DNS and Microsoft's documented tenant discovery — never per person.

Why this verdict

Confidence 93% · recommendation allow under the default b2b policy.

What this means

Addresses at aut.ac.nz belong to an institution's own domain, so isBusinessEmail treats them as organizational: is_business is true and the recommendation is allow under every policy. It is on our education domains list.

Students and staff use these addresses, which makes them useful for academic discounts and verification. aut.ac.nz receives mail through kromog2.aut.ac.nz, kromog3.aut.ac.nz, kromog1.aut.ac.nz.