domain report

Is valpo.edu a business email?

valpo.edu is an education domain: a school, college or university.

GET /v1/check?domain=valpo.educhecked 18 Oct 2026

isBusinessEmail("valpo.edu")

true

Education domain — a school or university.

category: education
recommendation: allow
confidence: 93%

Google Workspace: detected
Microsoft tenant: detected

reasons

Mail setup

Receives mail: Yes
Mail provider: google workspace
SPF: v=spf1 ip4:104.45.175.206 ip4:52.224.142.128 ip4:52.180.90.234 ip4:208.117.61.155 ip4:152.228.3.112 ip4:3.222.165.21 ip4:165.193.255.91 ip4:152.228.22.50 ip4:152.228.3.110 ip4:152.228.3.111 ip4:152.228.3.20 ip4:109.199.105.184 ip4:184.106.19.120 ip4:173.203.22.150 ip4:72.14.161.10 ip4:176.31.145.254 ip4:209.112.4.10 ip4:216.24.224.0/20 ip4:216.27.12.144/28 ip4:216.27.14.0/26 ip4:216.27.14.64/27 ip4:216.27.8.32/28 ip4:216.27.20.128/27 ip4:216.27.22.160/27 ip4:216.27.22.192/27 ip4:185.131.228.0/25 ip4:185.131.228.128/25 ip4:185.131.229.0/25 ip4:65.98.250.0/24 ip4:65.98.206.0/24 ip4:65.98.214.0/24 ip4:65.98.146.0/24 ip4:65.98.228.0/24 ip4:69.63.150.0/23 ip4:52.138.7.134/32 ip4:139.146.146.128/25 ip4:139.146.160.0/25 ip4:135.26.252.0/26 ip4:54.88.39.81 ip4:40.92.0.0/15 ip4:40.107.0.0/16 ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip4:198.245.81.0/24 ip4:136.147.176.0/24 ip4:13.111.0.0/16 ip4:136.147.182.0/24 ip4:136.147.135.0/24 ip4:199.122.123.0/24 ip4:167.89.0.0/17 ip4:208.117.48.0/20 ip4:50.31.32.0/19 ip4:198.37.144.0/20 ip4:198.21.0.0/21 ip4:192.254.112.0/20 ip4:168.245.0.0/17 ip4:149.72.0.0/16 ip4:159.183.0.0/16 ip4:103.151.192.0/23 ip4:185.12.80.0/22 ip4:188.172.128.0/20 ip4:192.161.144.0/20 ip4:216.198.0.0/18 ip4:208.76.56.0/21 ip4:216.146.32.0/20 ip4:80.231.25.0/24 ip4:80.231.219.0/24 ip4:103.11.200.0/22 ip4:199.19.0.0/21 ip4:204.13.248.0/22 ip4:208.78.68.0/22 ip4:162.88.36.0/23 ip4:162.88.4.0/23 ip4:162.88.24.0/24 ip4:162.88.28.0/24 ip4:10.144.155.128/26 ip4:129.148.164.0/25 ip4:129.148.215.0/25 ip4:129.149.6.0/25 ip4:129.149.38.0/25 ip4:138.1.170.0/24 ip4:147.154.32.0/25 ip4:147.154.63.0/24 ip4:147.154.126.0/24 ip4:147.154.191.0/24 ip4:162.88.24.0/21 ip4:192.29.72.0/25 ip4:192.29.88.0/25 ip4:192.29.103.128/25 ip4:192.29.134.0/25 ip4:155.248.148.0/25 ip4:131.186.12.0/25 ip4:138.1.156.112 ip4:130.35.132.195 ip4:38.106.32.22/32 ip4:38.106.32.46/32 ip4:223.165.113.0/24 ip4:223.165.115.0/24 ip4:223.165.118.0/23 ip4:223.165.120.0/23 ip6:2a01:111:f400::/48 ip6:2a01:111:f403::/49 ip6:2a01:111:f403:8000::/50 ip6:2a01:111:f403:c000::/51 ip6:2a01:111:f403:f000::/52 include:9161127.spf05.hubspotemail.net include:_spf.messagegears.net include:amazonses.com include:_spf.google.com exists:%{i}._spf.mta.salesforce.com include:spf.wbm.ai ip4:206.107.42.249 ip4:206.107.42.254 ip4:139.60.0.0/24 ip4:139.60.1.0/24 ip4:139.60.2.0/24 ip4:139.60.3.0/24 ~all
DMARC policy: none

MX records for valpo.edu
Priority	MX host
10	aspmx.l.google.com
20	alt1.aspmx.l.google.com
20	alt2.aspmx.l.google.com
20	alt3.aspmx.l.google.com
20	alt4.aspmx.l.google.com
30	aspmx2.googlemail.com
30	aspmx3.googlemail.com
30	aspmx4.googlemail.com
30	aspmx5.googlemail.com

Workspace

Google WorkspaceDetected
Microsoft 365Tenant only: Microsoft sign-in works, email runs elsewhere · region NA · managed sign-in

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 valpo.edu 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. valpo.edu receives mail through aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and more.