domain report

Is lssu.edu a business email?

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

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

isBusinessEmail("lssu.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 exists:%{i}._spf.lssu.edu ip4:198.110.216.0/21 ip4:208.75.120.0/22 ip4:205.207.104.0/22 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 ip4:223.165.113.0/24 ip4:223.165.115.0/24 ip4:223.165.118.0/23 ip4:223.165.120.0/23 ip4:209.61.151.0/24 ip4:166.78.68.0/22 ip4:198.61.254.0/23 ip4:192.237.158.0/23 ip4:23.253.182.0/23 ip4:104.130.96.0/28 ip4:146.20.113.0/24 ip4:146.20.191.0/24 ip4:159.135.224.0/20 ip4:69.72.32.0/20 ip4:104.130.122.0/23 ip4:146.20.112.0/26 ip4:161.38.192.0/20 ip4:143.55.224.0/21 ip4:143.55.232.0/22 ip4:159.112.240.0/20 ip4:198.244.48.0/20 ip4:204.220.160.0/20 ip4:141.193.32.0/23 ip4:159.135.140.80/29 ip4:159.135.132.128/25 ip4:161.38.204.0/22 ip4:87.253.232.0/21 ip4:185.189.236.0/22 ip4:185.211.120.0/22 ip4:185.250.236.0/22 ip4:143.55.236.0/22 ip4:198.244.60.0/22 ip4:198.245.81.0/24 ip4:142.0.176.0/20 ip4:38.106.32.46/32 ip4:24.110.64.0/18 ip4:204.232.162.112/28 ip4:204.232.180.112/29 ip4:204.232.180.128/29 ip4:69.20.119.216/29 ip4:76.12.109.192/27 ip4:67.59.141.128/28 ip4:209.41.176.224/28 ip4:69.48.230.0/25 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 ip4:199.30.234.56/29 ip4:74.203.184.208/30 ip4:199.30.234.64/26 ip4:199.30.234.192/27 ip4:74.203.184.32/27 ip4:207.195.176.0/20 ip4:40.92.0.0/15 ip4:40.107.0.0/16 ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip4:199.15.212.0/22 ip4:72.3.185.0/24 ip4:72.32.154.0/24 ip4:72.32.217.0/24 ip4:72.32.243.0/24 ip4:94.236.119.0/26 ip4:37.188.97.188/32 ip4:185.28.196.0/22 ip4:192.28.128.0/18 ip4:103.237.104.0/22 ip4:130.248.172.0/24 ip4:130.248.173.0/24 ip4:75.126.84.128/26 ip4:67.228.8.0/25 ip4:67.227.149.19 ip4:64.56.208.32/27 ip4:67.228.91.90 ip4:67.228.158.174 ip4:174.36.44.116/30 ip4:50.201.66.168 ip4:63.71.8.0/21 ip4:199.30.232.0/21 ip4:63.150.153.0/28 ip4:205.186.164.205/32 ip4:74.203.184.0/23 ip4:8.31.233.165/32 ip4:207.195.160.0/19 ip4:198.187.196.100 ip4:198.187.196.130 ip4:38.106.32.22/32 ip4:199.255.192.0/22 ip4:199.127.232.0/22 ip4:54.240.0.0/18 ip4:69.169.224.0/20 ip4:23.249.208.0/20 ip4:23.251.224.0/19 ip4:76.223.176.0/20 ip4:54.240.64.0/18 ip4:76.223.128.0/19 ip4:216.221.160.0/19 ip4:206.55.144.0/20 include:_spf.google.com include:_spf.sparkpostmail.com include:_spf.salesforce.com include:secure.giftlegacy.com ~all
DMARC policy: reject

MX records for lssu.edu
Priority	MX host
1	aspmx.l.google.com
5	alt2.aspmx.l.google.com
5	alt1.aspmx.l.google.com
10	alt4.aspmx.l.google.com
10	alt3.aspmx.l.google.com

Workspace

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

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