How is instructure.com?
Looks fine
risk 0/100
Registered 29 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 91 ms.
Why
02050100
finecarefulhigh risk
- ·Nothing in the checks added risk.
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
91 ms · ends at www.instructure.com
HTTPS
24 d
left on a Certainly certificate
Age
29 years
registered 1998-02-25
Blocklists
0
listings across 5 lists
Everything we looked at
DNS records4 record types
| A | 151.101.2.132 151.101.66.132 |
|---|---|
| MX | 20 aspmx2.googlemail.com 10 alt2.aspmx.l.google.com 0 aspmx.l.google.com 10 alt1.aspmx.l.google.com 20 aspmx3.googlemail.com |
| NS | ns-2.awsdns-00.com ns-1799.awsdns-32.co.uk ns-996.awsdns-60.net ns-1354.awsdns-41.org |
| TXT | astro-domain-verification=cmbjhzn9b0c0h01pimts1v2h1 bugcrowd-verification=817deedf9414a9ea878ff255c42a9afa stripe-verification=B0532755BD8D4E0C6B601C3FCDB1DF203E57A8D2CDA9A7F9F84F8BD64E21534D 2acd5847c66f4325be05af390213b8c7.instructure.com docker-verification=7555bc65-ce7a-4ed2-8028-4bf0274d2c5b google-site-verification=Som6bbrVvI5NLh3lTcpNSbp6_0GpFezQQ9xo6CrSHOQ google-site-verification=bC89ByaBs616PDmJLrSUG5RS3fyA8agwCtXch9G0GL0 pendo-domain-verification=2l9wI_SzXdfdzA0ZCZUES4O0FS0 google-site-verification=WSlNW84_Zm6mbOaM35pQyLJUt7-OtVXNjzXe9LT-eJI adobe-idp-site-verification=4287460e7429c97ad75b995bdef6b0d7ff1c9b541946abfaf2851e676d0f4693 canva-site-verification=jiASD5n0aNnvUnfIP1w4XA jamf-site-verification=-bAufptjYdQAfzF-s7PBtQ zoho-verification=zb08654551.zmverify.zoho.com docusign=1ca86ab9-2ddb-4d63-b719-4798811390ca apple-domain-verification=8oZZjgKWADRgkWui mongodb-site-verification=UyyatYgRcdnc3W9g8StgD1OK8wfcIouE anthropic-domain-verification-4mh4xs=A4vkPXqJIA4VVi9GAbxDEPohr anthropic-domain-verification-vz61c8=kfBobb4vvH2M9xtsZhFajtKHr ZOOM_verify_Up1Opd4-S9ChtRORps16qw figma-domain-verification=848b9254b032bfe488e955a140a8a63cb345186c3c69b7200f7843eca6071ead-1759959287 openai-domain-verification=dv-wb5qFISTkDoktTMXLsDMVuZ0 MS=ms20700021 atlassian-domain-verification=pS8CbCDhL3R1mMujl07LwhltWFcJtks8mrBa7l/1uocODR9nkzF908HCisTISJqI v=spf1 include:_spf.google.com include:amazonses.com include:_spf.q4press.com include:mktomail.com include:_spf.salesforce.com ip4:64.95.144.196 ip4:23.21.109.197 ip4:23.21.109.212 ip4:147.160.167.0/26 ip4:192.174.90.242 ip4:208.117.49.186 -all google-site-verification=3SDlSr_fW_6bYm0BDDK4ZXs6I5yKtB4WyXL3GNozx8I drift-domain-verification=608941e9992460f0ccd58daa1decf1808863da188a92910658284fc6bc8bd525 zapier-domain-verification-challenge=fe79b183-171c-432c-bf5d-48b3e73fd0af sprout-social-715adb3f-6166-4bc5-b3d9-b1faf326db31 anthropic-domain-verification-pz1pr3=sZkvFuBJeSdmEXoj4KJYYQW8Z hcp-domain-verification=24de36f1e2e1ad573ac320a62707e7ec8ac0cce2dccf7985914a8d0fea08c108 canva-site-verification=jRPvv0c9AZGTaJIIPIpfAQ m6bll7f2q2d2uidl6cq273dma0 fastly-domain-delegation-jpv3oeoqr3aouxwkbhpb-00480650-2025-07-31 miro-verification=0ee36f655f5ce0499683c255714fcdbe990af0e0 anthropic-domain-verification-2pz98m=hO4bmZQTC5gutJZcanKeagAWR onetrust-domain-verification=5ef48d8081ac4ab6adce9ed80c92f4e5 |
RegistrationNameCheap, Inc.
| registrar | NameCheap, Inc. |
|---|---|
| registered | 1998-02-25 |
| expires | 2027-02-24 |
| last changed | 2026-01-25 |
| nameservers | ns-1354.awsdns-41.org ns-1799.awsdns-32.co.uk ns-2.awsdns-00.com ns-996.awsdns-60.net |
| status | client transfer prohibited |
registered 1998-02-25expires 2027-02-24
HTTPS certificate24 days left
| valid | yes |
|---|---|
| issuer | Certainly |
| covers | instructure.com |
| protocol | TLSv1.3 |
issued 2026-10-22expires 2026-11-21
DNSSECinsecure
Domain is not signed with DNSSEC
. → com → instructure.com
Email authenticationexcellent
| SPF | pass v=spf1 include:_spf.google.com include:amazonses.com include:_spf.q4press.com include:mktomail.com include:_spf.salesforce.com ip4:64.95.144.196 ip4:23.21.109.197 ip4:23.21.109.212 ip4:147.160.167.0/26 ip4:192.174.90.242 ip4:208.117.49.186 -all |
|---|---|
| DMARC | pass policy quarantine |
| DKIM | found: google, s1, s2 |
Whether mail claiming to be from this domain can be checked as genuine.
Security scoregrade B · 165/205
Basic Security20/40missing: DNSSEC Enabled
Record Security30/45missing: CAA Records, DKIM Presence
Advanced Security20/25missing: IPv6 Support
Domain Reputation50/50
Threat Detection45/45missing: Domain Age Check
Blocklists0 listings · 8 lookups
SURBL MultidomainURIBL MultidomainSpamCop151.101.66.132Barracuda151.101.66.132UCEPROTECT Level 1151.101.66.132SpamCop151.101.2.132Barracuda151.101.2.132UCEPROTECT Level 1151.101.2.132
Green: clean. Red: listed. Grey: the list did not answer.
Ask it yourself
Agents get this as data. Bought through the API, the checks behind this page cost $0.070: profile $0.025 + trust $0.020 + screenshot $0.020 + site status $0.005.
curl "https://how.is/v1/domain/trust?domain=instructure.com" \
-H "Authorization: Bearer $HOWIS_KEY"
# or pay per call in USDC (x402), no key: the 402 tells your agent the price
curl -i "https://how.is/v1/domain/profile?domain=instructure.com"
MCP: add https://how.is/mcp to Claude, Codex or Cursor
(one-line install) and ask for domain_trust on instructure.com.
Reference: /llms.txt.
Watch instructure.com. DNS read at the source every 5 minutes; certificate, blocklists and expiry every 6 hours. You get an email only when something changes.
Watch — $1 / 30 days