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Total

DNS

Email

Security

Network

100

Availability

Domainepa.gov

IPv41

IPv61

MX records1

StatusActive

Domain technical report

U.S. Environmental Protection Agency | US EPA

epa.gov

Website of the U.S. Environmental Protection Agency (EPA). EPA's mission is to protect human health and the environment.

Generated: 2026-08-08T17:44:41-05:00 · Cached result

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IPv41

IPv61

MX1

NS4

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓

IPv6 (AAAA)10 / 10 pts · Dns

1 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 propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓

MX records20 / 20 pts · Mail

1 MX record(s).

✓

SPF25 / 25 pts · Mail

SPF policy published.

✓

DMARC25 / 25 pts · Mail

DMARC policy published.

✓

DKIM20 / 20 pts · Mail

A DKIM selector was verified.

MTA-STS0 / 5 pts · Mail

Mail transport policy.

TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓

Valid TLS certificate55 / 55 pts · Security

74 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers19 / 35 pts · Security

5 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: pubweb.epa.gov

IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓

IPv6 connectivity35 / 35 pts · Network

AAAA availability.

✓

DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓

HTTP response40 / 40 pts · Availability

HTTP/2 200

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)

134.67.21.34

AAAA

1 record(s)

2620:117:506f:15::f022

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

0 usepa.mail.protection.outlook.com.

TXT

10 record(s)

"MS=ms7622314"
"{adobe-idp-site-verification=6c7001ef-8126-4fbc-8ecb-8fae83ee039b}"
"v=spf1 include:spf.protection.outlook.com include:%{i}._ip.%{h}._ehlo.%{d}._spf.valigov.email ip4:134.67.100.0/24 ip4:161.80.70.0/24 ip4:134.67.208.0/24 ip4:32.65.72.32/26 include:gseg.att.com ~all"
"00Dt0000000GzSF=1TBSJ00000005Cb"
"iContact1869815"
"google-site-verification=pYOZ4IxrkFyFrh7YCNUqyfudsUvzkm_ArW_NYp2QQfs"
"adobe-idp-site-verification=6c7001ef-8126-4fbc-8fae83ee039b"
"google-site-verification=fUmsNQhzYYZmxo4WqfmBkmwUMlk1H9ns-cGuXfwx9IM"
"mongodb-site-verification=BlMuSDOkvL0UWUVteO3W2lcTbjGdtzq7"
"adobe-sign-verification=24513cfcab0903ecf5de3fd467be1d7412df57793960e76577f9b27be8efc9ba"

NS

4 record(s)

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

SOA

1 record(s)

rtpgm.ddi.epa.gov. dnsadmin.epa.gov. 2021587101 10800 1080 2419200 900

CAA

0 record(s)

—

Not configured

DS

2 record(s)

32804 8 2 7854B03A546EE2F217436C7BE0CDC05AEBBCB46EEAFA6B9D5077338C D9A6CE23
18652 8 2 BFB539D84218F5CF4B41AC58502253B2B0F416815F876C50EFD217E1 88D1219B

DNSKEY

4 record(s)

256 3 8 AwEAAdcoA9C3ippirSTE4vWwd/pMd25P0ChYh3ZeH+GvP83KeerY+jhu EmWDJ0LwPhuWC06bXM+RlSWMfOlFj4P8BpfGesnoYpQ1V8ohGhW9uSHz eWbmfw3T7Vlj/rLvoy7zwz39S8ksi53GdVYoRHCBT2vheHkKFbYATJJ1 2+WlT2UF
256 3 8 AwEAActnTyXx+AnyTDmn4Co3PgjyJq+DRwi7NRWfPzO1efyAm1hJsTaC mrA5DpFC/TfdSRHHkoLAnZTEPfAfqgtEEAi6xUa9b9+WWjvxcYwmNYsA N6WfV52gqGv5o6eWBnURBvEflr64TOTzlBF89hmLANvHlVG1PRJxLoys M3NeOkg1
257 3 8 AwEAAdjI4t6sE/cwHHGaCYWLcV613yIMQtREbGP80XQovjWblu3gNgEF iAYMBwLelUYKmiXzHI0F+KAEBmBjIWsdlH/Ot4Lkk4ekiDJ2VbdXr6EO WuVOFGVnHGW6OxUlut5RsGXK4VBD4+YMzOnOQLanoZhkGCIZEhN8t/P7 9v7cMzZxoQ++HtXCUH3DW6gMZxu/8FM1DFwI04yBMlOQuTbz1RYzifoz Kk+PWG5yzSyfX184gANtB7zHIYV/CFWm9xHU68BLffWMorwWFFgNsPkv q0PYrR/U6m1nx97MJcoVUdVkzHatsMyotkjGT7FlKzw/8VtzUHwU7bzz svnCC0Lzstc=
257 3 8 AwEAAcXjUL8+RKOJwH0jhU6qRSb43JrOxn7EEuOCyOnVnHOND/rxP0xh ZB1yc/Vp416orRgilRwdBzHQ4q2DQVgUCojf4uH6d2aBDZNbZBcVZHI1 ZFzFD1mZeGoNiIGBJxZYN+JQCiz9rsD+1C6ycvlFLUdLpvfJJTbYbn9S zNXQLEU6DLnwDTQHI+I33JGLq/3ZFkWvzsKcmTpmz9BobbUyS5UihTXX kX8UVD1cFfqsjIP56U+bK81FL75R6lVGDrmIpWvbRgHHB+d/oCOFzcuk lxisEgGdViPhSie0qgaM4k5FAlTPu75QLAb/veigIAhbtJHrvJyhhvkg 5OIWLkqJeHk=

RRSIG

11 record(s)

SOA 8 2 3600 20260812175943 20260808165943 33264 epa.gov. uUMRejyZWMf2vn3JnQ0kZ2pSXCdVuXGAy53ypLdDiAGxRgi6GF7aXpOS mUZA3OEQ5xJ5DlG6nUr3D09EGUHZYz9s5KMcT4pNl3C1a15AmuUYBNB3 2buuXaO9V4Z9OwHP7yUH3Z1a8tNcSZbWPZ/4W9/u8YTxmfRscHU4+Po0 GLU=
NS 8 2 3600 20260812015842 20260808010415 33264 epa.gov. tUbsmhA9zP1RK2R1kM8ohwpiCZOxptXF3Lov5vRzxgGtA6SCSWtqzHFJ qbzWgE1N/OzERyWelUtudzzeMAn0zhR9xnKZ8NHxp8fnqMeaBT6745RE h8FarDQDSJ1GJf8G4trbpDk/F1KZwmlq4L4oYh6Im5D1Sv45YNbmvdIr H2w=
AAAA 8 2 3600 20260811232359 20260807231518 33264 epa.gov. jA/Kki/wHaBUQsw00NrPjxgn/5GNKzAfIgyDQ0XY4wXWoFnGMSrvYRma VSdCn6zy11evSuNbnJH7zeN9+7u3EvCsnUIv0/f6DNg5nOIMiNWka5Lc YueMIPohwe3kOJGl5Di6uvTu65yMML20OuCVRaRBqyX2LbJcfpzq/Pe+ cPw=
DNSKEY 8 2 172800 20260812095723 20260808094942 33264 epa.gov. jIEHLNtZYj5eAuHhMuTLNd80nez3Tvazqpn2VlWzFi3r/PIOo+6uiMc7 5wGg4JDQiggarcfZrg0f72yhJuN+3Cg/j+0H3JggaIkQO2vspoEBPcJy l4nCix9kHOXtzTSD4/kjKsYfe1gtseRCncFhNEvHJ9zvbl/YEIzSfGFi /00=
DNSKEY 8 2 172800 20260812095723 20260808094942 32804 epa.gov. ADh3WyClwHfoM1GSroEgHex2SXjkzstGGqDhlQizrFg8Rk95G7QwqQKC MMsgnJdnLQ6iT812F0NLZX51z3W0MPobyQ+7ho9FAiWFwsQumufYac/I S23iiwW7SsB8LCtzwtE4PveWlXGVDWOoQmmt3xVMZhID1LpRfzMJ29jW jnIUE+kA75WZesOONa/SYyQh3rkmSlr+xlDVLrZAT3UQZl12+q6DCzYS dkADlnZ4PlQVtgtjq9RF9p+nju1OVKkZckT5WeQxH6q0ikqsROmsVQnY kFOITbNly5dSyAEqoibtX0roY+fc2p5dFEpeEEeJxuyXLm4uwunHaog3 QnyYbw==
DNSKEY 8 2 172800 20260812095723 20260808094942 18652 epa.gov. zTgcnr8gXKdrv50pPcBPcAhajdDsEzd9+qV0EUkfmhGXsRwMbqtku82q MAgLt3WBud3U/XdADQtRQM7syOt7d+k16nf/eVx8ntY4H9KkPjvh12Jz 6W5Gk99JSWxlfQ+GPfw8JBXMmqxbb30i8KkWJMIHQ1XY3VSP2w02tQee 8PAL4yToO1Xj5h6ijCUXCuj+J38XTkPRRn9bO20l95DmmOXqiZZKimWY AGf04Hdp2k0JL1jIGaNJcBad64k/vncSKNM54J9qqgsGFORNdrsd5ioh LMYZQ/rh5s1MsVMCMW//xrWv5Vwhc6hE/KulZeoT9iJzGNRT/iUy1iJQ tniCjA==
TXT 8 2 600 20260812015842 20260808010415 33264 epa.gov. BUg6724HVXARGFJvnWVY6LVPBlQIWOHErUXyLRCLIuGRS4UqAysO4BkM 4XMhsBN+CDWviz7CnE0RC8WEocezPJwXYnFSbEuf7xYiF2BJM1hnHvIx S4qifzRsZ3GktNVHaEX075v9JqMuTWH49rtjl3+2fz2+vrSBiBhhioTg xQ4=
A 8 2 3600 20260812015842 20260808010415 33264 epa.gov. U3jbKci5OMPdDp9N4wyfW0oNoa9ZvLL3Hx3r6/5YmSgVXn/6GGWihQrh Iza93ZViafskwp+NUUbvnCfrVMNOjofd18auASjhe6pFKGxneplE6OZs hRpsNQEEqm9NqRYtuLd1agL9O1lDwC6TZMyizL2ourCYWbBDY4Iu2rAs PeY=
MX 8 2 300 20260811235835 20260807232915 33264 epa.gov. iigyPFO014NVTH8A4dDQz42zfX9p2UaW6DG0iVePuRDhEa3kdajgOrA3 1dobyR5wQVlHcQ3ZfgQjsfgpe5eKzi8T0XL0cFObyjlqn+5Ko1YIaHoG djoCGF6FbAk9Yk+pfjriRNlcu87TqIdHg/VjTTK0lBz7KPBcgRmPjWwJ JNQ=
DS 13 2 3600 20260809234337 20260807214337 35496 gov. Cda+HTy/4ky/JVQsJuKNOdJ5ohTj1LM6Jj03lzN/GM2gvloIoxH1aNPs o2T4u77nhCRSBGaBFx5HaQO6Idt8AA==
NSEC3PARAM 8 2 900 20260812022001 20260808013954 33264 epa.gov. YjBvu/Jb+mcqJaSLGEAzBPf2pEq+g7pTxr1UCD2SXnduQVL+Qc3jUQlI vNbQVb9VYLqSP7iujBqz3cQ2GgOvVZcCXVIeKsWj97sBjDmTcUDFoQZP ifUqGHCj0o7WdHT+YrSZq+pQNAOiz7fo3Q9xsAn7Beys3QNHSX9CSDjk jlc=

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:spf.protection.outlook.com include:%{i}._ip.%{h}._ehlo.%{d}._spf.valigov.email ip4:134.67.100.0/24 ip4:161.80.70.0/24 ip4:134.67.208.0/24 ip4:32.65.72.32/26 include:gseg.att.com ~all

DMARC

Configured

v=DMARC1; p=reject; rua=mailto:dmarc_agg@valigov.email,mailto:5373cc68@mxtoolbox.dmarc-report.com,mailto:dmarc_rua_epa.gov@epa.gov,mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:5373cc68@forensics.dmarc-report.com,mailto:dmarc_ruf_epa.gov@epa.gov; fo=1

DKIM

Selector default

v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC83V/HwP5cxFaA1+vdEIXZw8Qoo8o9LxgniE69XbBtKyXpPzTwG7Lssc7tc0qxGBOROEnQpZyAPdUh9IbZMiqW2DSPw1ZjxTK4RICk/yiY6wDJWjVAabPN6ANuldKk7XTQhfy54y/eAaQVkMIxV2yrIqxwBOZcGSRpdzF+IPHttwIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

U.S. Environmental Protection Agency | US EPA

Description

Website of the U.S. Environmental Protection Agency (EPA). EPA's mission is to protect human health and the environment.

Final URL

https://www.epa.gov/

HTTP status

200

HTTP

Status

HTTP/2 200

Final URL

https://www.epa.gov/

Version

Server

nginx

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

DigiCert Inc

*.epa.gov

Valid from

2026-04-15T19:00:00-05:00

Valid until

2026-10-21T18:59:59-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

5 active

✓

HSTSImplemented

✓

Content Security PolicyImplemented

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

✓

Referrer PolicyImplemented

—

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

Consistent

✓

Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

134.67.21.34

98,98 ms

Cloudflare

1.1.1.1

134.67.21.34

46,37 ms

Quad9

9.9.9.9

134.67.21.34

50,49 ms

OpenDNS

208.67.222.222

134.67.21.34

45,57 ms

AdGuard

94.140.14.14

134.67.21.34

80,07 ms

IP, geolocation and ASNAssociated network information

134.67.21.34

No data

success

country

region

city

asn

organization

isp

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

usepa.mail.protection.outlook.com

Port 25: Closed/unreachable - 38.7 ms - 
Port 465: Closed/unreachable - 4026.1 ms - 
Port 587: Closed/unreachable - 4046.8 ms -

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