isthmus.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-14 · ok HTTP/1.1 200 997 ms crawled 2026-05-19

US · 75.101.132.169 · AS14618 Amazon.com, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

Registration

Registrar

GoDaddy.com, LLC

Created

1995-01-25

Expires

2029-01-26 982 days left

Updated

2022-10-17

Name servers

ns1.supercp.com
ns2.supercp.com
ns3.supercp.com
ns4.supercp.com

DNS records live

NS

ns1.supercp.com
ns2.supercp.com
ns3.supercp.com
ns4.supercp.com

MX

1 aspmx.l.google.com
10 alt3.aspmx.l.google.com
20 alt4.aspmx.l.google.com
5 alt2.aspmx.l.google.com
5 aspmx.l.google.com

TXT

google-site-verification=usqO5x0C1Yue8PTmtjA0Gvv7huzH3G9lYbTLZ0gPm1M
v=DMARC1; p=none; pct=100;
google-site-verification=2EDULM0ovKOv7SxQyZsbT6xT70Mx__N-fsYquD6PQsI

Email authentication partial

SPF

v=spf1 ip4:70.32.23.65 include:spf.supercp.com ip4:173.229.1.82 +a +mx +ip4:208.66.128.194/32 +ip4:69.11.255.94/32 +include:_spf.google.com +include:thedailypage.com include:emsd1.com ~all

softfail (~all)

DMARC

v=DMARC1; p=none; pct=100;

policy: none (monitoring only)

DKIM

default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv6qdwqfM7W2AjqoDFSNkhHIH/Y//30d5fItw3iPBbfM5QNIIDCaORGT1D2ex7Knyyka/aNBHpEunZC…

selectors probed

Certificate (current)

R12

from 2026-04-10 to 2026-07-09

Expires in 50 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://isthmus.com/

present

x-frame-options

findings

missing HSTS
missing Content Security Policy
missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

x-frame-options: SAMEORIGIN