Email authentication

bgp.tools SPF validation

Cached SPF record analysis for this domain.

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SPF validation

Record found

Valid SPF record

Query name

bgp.tools

Terminal all

DNS lookup count

SPF record count

SPF record

v=spf1 ip4:194.33.11.33/32 ip4:185.230.223.0/24 ip6:2a0c:2f07::/32 ip6:2001:baa:5004::1/128 include:_spf.google.com -all

Mechanisms

+ip4:194.33.11.33/32+ip4:185.230.223.0/24+ip6:2a0c:2f07::/32+ip6:2001:baa:5004::1/128+include:_spf.google.com-all

Recommendations

pair with DMARC Analyzer and DKIM Validator before tightening mail authentication enforcement

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Same target (bgp.tools) — open the next tool without retyping.

Email Auth CheckerSame targetRun SPF, DMARC, and DKIM checks in one auditbgp.toolsOpen
DMARC AnalyzerSame targetDMARC policy, alignment and reporting checksbgp.toolsOpen
DKIM ValidatorSame targetDKIM selector lookup and record validationbgp.toolsOpen
DNS CheckerSame targetAll major record types in one passbgp.toolsOpen
DIGSame targetOne record type, resolver-style answerbgp.toolsOpen
Domain IP LookupSame targetA and AAAA IP addresses for a domainbgp.toolsOpen
Domain Age CheckerSame targetCreation date, age, registrar and expirybgp.toolsOpen
WHOISSame targetRegistrar, expiry and domain statusbgp.toolsOpen
HTTP Header CheckerSame targetResponse headers, redirects and cachingbgp.toolsOpen
HTTP/2 TesterSame targetHTTP/2 support, ALPN and TLS negotiationbgp.toolsOpen
SSL Certificate CheckerSame targetCertificate chain, SAN and TLS versionbgp.toolsOpen
CAA Record CheckerSame targetCheck CAA DNS records, authorized CAs, issuewild and iodefbgp.toolsOpen
Blacklist CheckerSame targetDNSBL reputation for IP and domainbgp.toolsOpen
Punycode ConverterSame targetUnicode ↔ Punycode for IDN domainsbgp.toolsOpen
URL SplitterSame targetBreak a URL into parts and query paramshttps://bgp.tools/Open
Base64 CodecEncode and decode Base64 textOpen
Password GeneratorStrong random passwords for ops workOpen
Password Strength CheckerEntropy, crack time and password suggestionsOpen
Passphrase GeneratorMemorable random word phrases for safer sharing testsOpen
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Browser Update CheckerBrowser version, update status and Client HintsOpen

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Guides

Practical guides for common SPF Validator tasks — DNS records, troubleshooting steps, and links to our free tools.

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SPF TXT record basics at the domain apex
SPF TXT record basics at the domain apex. SPF authorizes mail senders through a single v=spf1 TXT record published at the domain apex, not at _dmarc or DKIM selectors. DN01 returns parsed mechanisms, lookup estimates, warnings, and a shareable result URL for the same domain after DNS changes.
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Include mechanisms and third-party senders
Include mechanisms and third-party senders. SPF authorizes mail senders through a single v=spf1 TXT record published at the domain apex, not at _dmarc or DKIM selectors. DN01 returns parsed mechanisms, lookup estimates, warnings, and a shareable result URL for the same domain after DNS changes.
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Terminal all qualifiers: pass, fail, softfail, neutral
Terminal all qualifiers: pass, fail, softfail, neutral. SPF authorizes mail senders through a single v=spf1 TXT record published at the domain apex, not at _dmarc or DKIM selectors. DN01 returns parsed mechanisms, lookup estimates, warnings, and a shareable result URL for the same domain after DNS changes.
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SPF DNS lookup limit and flattening
SPF DNS lookup limit and flattening. SPF authorizes mail senders through a single v=spf1 TXT record published at the domain apex, not at _dmarc or DKIM selectors. DN01 returns parsed mechanisms, lookup estimates, warnings, and a shareable result URL for the same domain after DNS changes.
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SPF alignment with DMARC enforcement
SPF alignment with DMARC enforcement. SPF authorizes mail senders through a single v=spf1 TXT record published at the domain apex, not at _dmarc or DKIM selectors. DN01 returns parsed mechanisms, lookup estimates, warnings, and a shareable result URL for the same domain after DNS changes.
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Shareable SPF validator result pages
Shareable SPF validator result pages. SPF authorizes mail senders through a single v=spf1 TXT record published at the domain apex, not at _dmarc or DKIM selectors. DN01 returns parsed mechanisms, lookup estimates, warnings, and a shareable result URL for the same domain after DNS changes.
Read article →

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SPF validation

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Related articles

SPF TXT record basics at the domain apex

Include mechanisms and third-party senders

Terminal all qualifiers: pass, fail, softfail, neutral

SPF DNS lookup limit and flattening

SPF alignment with DMARC enforcement

Shareable SPF validator result pages