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Total

DNS

Email

Security

Network

Availability

Domainairnow.gov

IPv40

IPv60

MX records0

StatusActive

Domain technical report

airnow.gov

Generated: 2026-08-09T18:17:41-05:00 · Cached result

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IPv40

IPv60

MX0

NS4

DiagnosticsMain findings and recommendations

IPv4 (A)0 / 30 pts · Dns

0 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

4 NS record(s); 2 or more required.

✓

SOA record10 / 10 pts · Dns

Authoritative zone record.

✓

DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

CAA policy0 / 5 pts · Dns

Certificate authority restriction.

DNS propagation0 / 10 pts · Dns

Agreement between public resolvers.

MX records0 / 20 pts · Mail

0 MX record(s).

✓

SPF25 / 25 pts · Mail

SPF policy published.

✓

DMARC25 / 25 pts · Mail

DMARC policy published.

DKIM0 / 20 pts · Mail

No tested DKIM selector responded.

MTA-STS0 / 5 pts · Mail

Mail transport policy.

TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

Valid TLS certificate0 / 55 pts · Security

No valid certificate was retrieved.

Certificate lifetime0 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers0 / 35 pts · Security

0 of 9 evaluated headers detected.

PTR reverse DNS0 / 30 pts · Network

PTR not detected.

IPv4 diversity0 / 35 pts · Network

Two or more IPv4 addresses receive full points.

IPv6 connectivity0 / 35 pts · Network

AAAA availability.

DNS resolution0 / 40 pts · Availability

At least one address family must resolve.

HTTP response0 / 40 pts · Availability

No successful HTTP response.

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

0 record(s)

—

Not configured

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

0 record(s)

—

Not configured

TXT

2 record(s)

"v=spf1 include:_epamail.epa.gov include:spf.protection.outlook.com include:gseg.att.com -all"
"j50c0kjzvvd0y6pvcjdykrvd8kq713f7"

NS

4 record(s)

dcns2.epa.gov.
nccns1.epa.gov.
dcns1.epa.gov.
nccns2.epa.gov.

SOA

1 record(s)

rtpgm.ddi.epa.gov. dnsadmin.epa.gov. 2021129121 10800 1080 2419200 900

CAA

0 record(s)

—

Not configured

DS

2 record(s)

21100 8 2 CD16197227BEA526E1506D3E90731352EA6AE9E6A0B3C0DFB429C7A2 46C695EA
13009 8 2 3153A088767DFF5F4411037DCA8DC1CBFDB8880E7151DE61C91EBA61 75A580C9

DNSKEY

4 record(s)

257 3 8 AwEAAZv34belJ387LywtJMlGDsWKbw0C19UPJST6pXkAKOvb+95N+HzA nw1uzq3Mrd95HOX5pjY1GUeXg8eU8mqzFoirgN2Kp7tOfrtVnmSoEEMP eH6iQIlOPj1Yybe/PrOG8V/RI4lMJQOpg83agbXiIMdoWpDL9gvVHEuX M4x3+fllJ7bSCxEocfAXj8nCuc2qz9fiE/m0wjC4BMfUuz2Zsx84nK4v vO7s/rXnZp0FBQ31qOzSTDllbapIYPLSt9Q8DJwJ3fcG4eKL+equjP/N 23wu9/l5okm20soQCjr4LWRUiqlxbKnG7cxsLmLWRtctnXTEyoPKQnfB sqJSb1Ws3ic=
257 3 8 AwEAAdDhmB/gcw12Toqwh+oX7jNMnpk7KNPMTo+pojHVhRUq2hafaMTL IvzdjwafjbKz4wm4tIgx87DwmnFs47tOwVrgna1/RVw3mOYQgKGswb9C 4Zv0HrOOaFyUQWCm/qDQqa3NyO0D7fp8FjDamSOhh5o15uUlanonvqg1 slNnHaEJj8jh/49Ha6sUbRH1BlWAWB8YB04QQG/thnrq/TLLuLgJp1xM Rev7fYcmng8nlmZPyDcI7bGbEHzywrylwej0lsoZ8xvaD/Jy79/eFFLW nTjbS9piqOnp4ODVF6/xPQ8pI3Piynru2d/OzHeyhkpqDyhMkigemZr0 eGIcsmGzzdU=
256 3 8 AwEAAaHE74JhQv2UIH8E/kATSZMwvPY5WW/6ha4mDkjAgV1Ob19NZAZ+ OfhD4deRs1f7RvoZO29iwq/O/TczEENSslNgkd6+bYPW54sF04TPLntW CZCao0qABuJz+Zn7vWTSOijJ2NhDyZFwajQmtfLztXJsV1vB0ts/ePqa g6yI9er/
256 3 8 AwEAAZvk9Om43A920i1ikw1Bk6ULJ9qfvnUBi1TsXEQ9z5KIq4IJ1rdE 0ZiyfIHzEEqmXm7+x9JZ3VuIUEIErKOBspzqQTQxu0FOnBKxbhLab2Ml uQwZGR4ezrsi8kZwJJFlCk/YMNVQjS6dkjkTK7y8Om04iWR6mZ4Ia8tj nLPVY01v

RRSIG

1 record(s)

DS 13 2 3600 20260811001737 20260808221737 35496 gov. zlddtckTdHb9qOZyFyQv9QUokP9SFzgfdPBKCMqZ6lhdTh/WXVGdBTBS /bTC+d4ek3kDOJ5/NvUrpT5IPKoi6w==

NSEC

0 record(s)

—

Not configured

NSEC3

0 record(s)

—

Not configured

SRV

0 record(s)

—

Not configured

NAPTR

0 record(s)

—

Not configured

TLSA

0 record(s)

—

Not configured

SSHFP

0 record(s)

—

Not configured

SPF

Configured

v=spf1 include:_epamail.epa.gov include:spf.protection.outlook.com include:gseg.att.com -all

DMARC

Configured

v=DMARC1;p=reject;pct=100;rua=mailto:DMARC_RUA_airnow.gov@epa.gov;ruf=mailto:DMARC_RUF_airnow.gov@epa.gov;rua=mailto:reports@dmarc.cyber.dhs.gov;fo=1

DKIM

Not found

—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

No data

Title

Description

Final URL

https://airnow.gov/

HTTP status

HTTP

Status

Final URL

https://airnow.gov/

Version

Server

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Unavailable

Available

Issuer

Valid from

Valid until

Days remaining

Protocol

Cipher

Security headers

0 active

—

HSTSNot detected

—

Content Security PolicyNot detected

—

X-Content-Type-OptionsNot detected

—

X-Frame-OptionsNot detected

—

Referrer PolicyNot detected

—

Permissions PolicyNot detected

—

Cross-Origin-Opener-PolicyNot detected

—

Cross-Origin-Embedder-PolicyNot detected

—

Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Review

Differences detected

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

49,93 ms

Cloudflare

1.1.1.1

48,65 ms

Quad9

9.9.9.9

57,07 ms

OpenDNS

208.67.222.222

52,84 ms

AdGuard

94.140.14.14

56,71 ms

IP, geolocation and ASNAssociated network information

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

airnow.gov

Port 25: Closed/unreachable - 31.2 ms - 
Port 465: Closed/unreachable - 1.4 ms - 
Port 587: Closed/unreachable - 1.4 ms -

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