HOW.IS
?

How is sendgrid.net?

Be careful risk 40/100

Registered 18 years ago, listed on 1 blocklist, valid HTTPS, the site answered HTTP 404.

Why

02050100
finecarefulhigh risk
  • +40Listed on 1 spam/abuse blocklist(s).

Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

Site
404
32 ms
HTTPS
44 d
left on a GoDaddy.com, Inc. certificate
Age
18 years
registered 2009-04-20
Blocklists
1
listings across 5 lists

Everything we looked at

DNS records5 record types
A3.148.128.83
3.143.50.254
18.119.8.95
54.236.83.142
18.210.196.248
3.146.143.145
54.152.205.116
3.17.195.251
MX10 mx.sendgrid.net
20 mx2.sendgrid.net
NSns-1735.awsdns-24.co.uk
ns-380.awsdns-47.com
ns-1429.awsdns-50.org
ns-989.awsdns-59.net
TXTtdjhrpaflcikf52iqtn9rnggr9
utjqqjvmeadmlva41ectre9gd3
v=spf1 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 ip4:134.128.64.0/18 ip4:159.26.176.0/20 include:ab.sendgrid.net ~all
5m3r13nvilmq8tgf5foh6ki1uv
i52uk89q4nfe1mpgqv5qsmsj3j.
google-site-verification=1UEf8ey-RibUjY6gnpqIZFjWNqMknmeyeHz1zTmj0DE
cemmvnbghpsb500d7c19e35fgm
l8bqrl0r33q4joeb79q8uuj009
6ifgg010qg6mquqt5lodun8qds
p8bnb2lp424dkl3c4io1aemiei
yahoo-verification-key=TrufSXS+dfythA5AIMbLUnkX38rjr1HR93gbqHUSY74=
mailru-verification: 2e3995fa8a7d00e0
CAA{'type': 'CAA', 'issue': 'amazonaws.com', 'critical': 0}
{'type': 'CAA', 'issue': 'godaddy.com', 'critical': 0}
{'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0}
RegistrationMarkMonitor Inc.
registrarMarkMonitor Inc.
registered2009-04-20
expires2027-04-20
last changed2026-10-28
ownerREDACTED FOR PRIVACY
nameserversns-1429.awsdns-50.org
ns-1735.awsdns-24.co.uk
ns-380.awsdns-47.com
ns-989.awsdns-59.net
statusclient delete prohibited
client transfer prohibited
client update prohibited
registered 2009-04-20expires 2027-04-20
HTTPS certificate44 days left
validyes
issuerGoDaddy.com, Inc.
covers*.sendgrid.net, sendgrid.net
protocolTLSv1.2
issued 2026-05-29expires 2026-12-13
DNSSECinsecure

Domain is not signed with DNSSEC

. → net → sendgrid.net
Email authenticationexcellent
SPFpass v=spf1 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 ip4:134.128.64.0/18 ip4:159.26.176.0/20 include:ab.sendgrid.net ~all
DMARCpass policy reject
DKIMfound: s1, s2

Whether mail claiming to be from this domain can be checked as genuine.

Security scoregrade B · 150/205
Basic Security
20/40missing: DNSSEC Enabled
Record Security
45/45missing: DKIM Presence
Advanced Security
20/25missing: IPv6 Support
Domain Reputation
30/50missing: Domain Blacklist Status, Reputation Confidence Alert
Threat Detection
35/45missing: Fast-Flux Detection, Domain Age Check
Blocklists1 listing · 17 lookups
SURBL MultidomainURIBL MultidomainSpamCop35.169.45.18Barracuda35.169.45.18UCEPROTECT Level 135.169.45.18SpamCop3.146.143.145Barracuda3.146.143.145UCEPROTECT Level 13.146.143.145SpamCop44.217.133.99Barracuda44.217.133.99UCEPROTECT Level 144.217.133.99SpamCop3.17.195.251Barracuda3.17.195.251UCEPROTECT Level 13.17.195.251SpamCop18.210.196.248Barracuda18.210.196.248UCEPROTECT Level 118.210.196.248

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=sendgrid.net" \ -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=sendgrid.net"

MCP: add https://how.is/mcp to Claude, Codex or Cursor (one-line install) and ask for domain_trust on sendgrid.net. Reference: /llms.txt.

Watch sendgrid.net. 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