`jeffosullivan.com`

DNSSEC	⚠️ Not signed
A	3.5.12.105^{🇺🇸 Amazon3.5.12.0/23 AWS S3}
		PTR	`s3-website.us-east-1.amazonaws.com`
A	3.5.12.163^{🇺🇸 Amazon3.5.12.0/23 AWS S3}
A	3.5.14.144^{🇺🇸 Amazon3.5.14.0/23 AWS S3}
A	16.15.179.181^{🇺🇸 Amazon16.15.176.0/21 EC2 Prefix}
A	16.15.183.172^{🇺🇸 Amazon16.15.176.0/21 EC2 Prefix}
A	52.217.170.101^{🇺🇸 Amazon52.217.160.0/19 AWS S3}
A	54.231.165.133^{🇺🇸 Amazon54.231.160.0/19 prefix}
A	54.231.197.101^{🇺🇸 Amazon54.231.192.0/19}
NS	`ns-215.awsdns-26.com` ⭐
		A	2600:9000:5300:d700::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-215.awsdns-26.com`
		A	205.251.192.215^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-215.awsdns-26.com`
NS	`ns-1039.awsdns-01.org`
		A	2600:9000:5304:f00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1039.awsdns-01.org`
		A	205.251.196.15^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1039.awsdns-01.org`
NS	`ns-1871.awsdns-41.co.uk`
		A	2600:9000:5307:4f00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1871.awsdns-41.co.uk`
		A	205.251.199.79^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1871.awsdns-41.co.uk`
NS	`ns-662.awsdns-18.net`
		A	2600:9000:5302:9600::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-662.awsdns-18.net`
		A	205.251.194.150^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-662.awsdns-18.net`
MX	`mail.protonmail.ch` ⭐ 🔒
		A	176.119.200.128^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mail.protonmail.ch`
		A	185.70.42.128^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mail.protonmail.ch`
		A	185.205.70.128^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mail.protonmail.ch`
MX	`mailsec.protonmail.ch`⁽²⁰⁾ 🔒
		A	176.119.200.129^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.70.42.129^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.205.70.129^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mailsec.protonmail.ch`
TXT	`protonmail-verification=11e251c14699572b8eff110f8bc6f0bfc5affe6d`
TXT	`v=spf1 include:_spf.protonmail.ch ~all`
SOA	`ns-215.awsdns-26.com`awsdns-hostmaster@amazon.com serial=1

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1771291435

Same first word

jeffosullivan.com

DNS History

50 records (14 active, 36 former)

●NSns-1039.awsdns-01.org2026-03-04 → 2026-03-08 · 3 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
● 2026-03-08 06:44:34

●NSns-1871.awsdns-41.co.uk2026-03-04 → 2026-03-08 · 3 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
● 2026-03-08 06:44:34

●NSns-215.awsdns-26.com2026-03-04 → 2026-03-08 · 3 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
● 2026-03-08 06:44:34

●NSns-662.awsdns-18.net2026-03-04 → 2026-03-08 · 3 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
● 2026-03-08 06:44:34

○NSns1.bluehost.com2019-12-16 → 2019-12-16 · 3 obs

● 2019-12-16 14:34:28
○ 2026-03-04 11:59:30
○ 2026-03-08 06:44:34

○NSns2.bluehost.com2019-12-16 → 2019-12-16 · 3 obs

● 2019-12-16 14:34:28
○ 2026-03-04 11:59:30
○ 2026-03-08 06:44:34

○MXmail.jeffosullivan.com2019-12-16 → 2019-12-16 · 3 obs

● 2019-12-16 14:34:28
○ 2026-03-04 11:59:30
○ 2026-03-08 06:44:34

●MXmail.protonmail.ch2026-03-04 → 2026-03-08 · 3 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
● 2026-03-08 06:44:34

●MXmailsec.protonmail.ch2026-03-04 → 2026-03-08 · 3 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
● 2026-03-08 06:44:34

●A16.15.179.1812026-03-08 → 2026-03-08 · 3 obs

○ 2026-03-06 23:49:40
● 2026-03-08 06:44:30
● 2026-03-08 06:44:34

○A16.15.181.1552026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-05 07:45:48
● 2026-03-06 22:46:26
○ 2026-03-06 23:49:40
○ 2026-03-08 06:44:34

●A16.15.183.1722026-03-08 → 2026-03-08 · 3 obs

○ 2026-03-06 23:49:40
● 2026-03-08 06:44:30
● 2026-03-08 06:44:34

○A16.15.183.2482026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 11:59:30
● 2026-03-05 07:45:48
○ 2026-03-06 22:46:26
○ 2026-03-08 06:44:34

○A16.15.191.1972026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 22:46:26
● 2026-03-06 23:49:40
○ 2026-03-08 06:44:30
○ 2026-03-08 06:44:34

○A16.15.191.2512026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 11:59:30
● 2026-03-05 07:45:48
○ 2026-03-06 22:46:26
○ 2026-03-08 06:44:34

○A16.15.191.542026-03-04 → 2026-03-04 · 4 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
○ 2026-03-05 07:45:48
○ 2026-03-08 06:44:34

○A16.15.193.902026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 11:59:30
● 2026-03-05 07:45:48
○ 2026-03-06 22:46:26
○ 2026-03-08 06:44:34

○A16.15.194.582026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-05 07:45:48
● 2026-03-06 22:46:26
○ 2026-03-06 23:49:40
○ 2026-03-08 06:44:34

○A16.15.207.372026-03-04 → 2026-03-04 · 4 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
○ 2026-03-05 07:45:48
○ 2026-03-08 06:44:34

○A16.15.207.672026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 11:59:30
● 2026-03-05 07:45:48
○ 2026-03-06 22:46:26
○ 2026-03-08 06:44:34

○A16.15.217.1772026-03-04 → 2026-03-04 · 4 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
○ 2026-03-05 07:45:48
○ 2026-03-08 06:44:34

○A16.15.218.1712026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 11:59:30
● 2026-03-05 07:45:48
○ 2026-03-06 22:46:26
○ 2026-03-08 06:44:34

○A16.15.218.2532026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-05 07:45:48
● 2026-03-06 22:46:26
○ 2026-03-06 23:49:40
○ 2026-03-08 06:44:34

○A16.15.223.522026-03-04 → 2026-03-04 · 4 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
○ 2026-03-05 07:45:48
○ 2026-03-08 06:44:34

○A16.15.228.1252026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 22:46:26
● 2026-03-06 23:49:40
○ 2026-03-08 06:44:30
○ 2026-03-08 06:44:34

○A16.182.108.1892026-03-04 → 2026-03-04 · 4 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
○ 2026-03-05 07:45:48
○ 2026-03-08 06:44:34

○A16.182.41.1972026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 22:46:26
● 2026-03-06 23:49:40
○ 2026-03-08 06:44:30
○ 2026-03-08 06:44:34

○A16.182.71.2212026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 22:46:26
● 2026-03-06 23:49:40
○ 2026-03-08 06:44:30
○ 2026-03-08 06:44:34

●A3.5.12.1052026-03-08 → 2026-03-08 · 3 obs

○ 2026-03-06 23:49:40
● 2026-03-08 06:44:30
● 2026-03-08 06:44:34

●A3.5.12.1632026-03-08 → 2026-03-08 · 3 obs

○ 2026-03-06 23:49:40
● 2026-03-08 06:44:30
● 2026-03-08 06:44:34

●A3.5.14.1442026-03-08 → 2026-03-08 · 3 obs

○ 2026-03-06 23:49:40
● 2026-03-08 06:44:30
● 2026-03-08 06:44:34

○A50.87.249.502019-12-16 → 2019-12-16 · 3 obs

● 2019-12-16 14:34:28
○ 2026-03-04 11:59:30
○ 2026-03-08 06:44:34

○A52.216.140.832026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-05 07:45:48
● 2026-03-06 22:46:26
○ 2026-03-06 23:49:40
○ 2026-03-08 06:44:34

○A52.216.237.1382026-03-04 → 2026-03-04 · 4 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
○ 2026-03-05 07:45:48
○ 2026-03-08 06:44:34

○A52.216.44.1572026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-05 07:45:48
● 2026-03-06 22:46:26
○ 2026-03-06 23:49:40
○ 2026-03-08 06:44:34

○A52.216.48.452026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-05 07:45:48
● 2026-03-06 22:46:26
○ 2026-03-06 23:49:40
○ 2026-03-08 06:44:34

○A52.217.113.1812026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 22:46:26
● 2026-03-06 23:49:40
○ 2026-03-08 06:44:30
○ 2026-03-08 06:44:34

○A52.217.113.212026-03-04 → 2026-03-04 · 4 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
○ 2026-03-05 07:45:48
○ 2026-03-08 06:44:34

●A52.217.170.1012026-03-08 → 2026-03-08 · 3 obs

○ 2026-03-06 23:49:40
● 2026-03-08 06:44:30
● 2026-03-08 06:44:34

○A52.217.175.772026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-05 07:45:48
● 2026-03-06 22:46:26
○ 2026-03-06 23:49:40
○ 2026-03-08 06:44:34

○A52.217.232.932026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-05 07:45:48
● 2026-03-06 22:46:26
○ 2026-03-06 23:49:40
○ 2026-03-08 06:44:34

○A52.217.37.272026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 22:46:26
● 2026-03-06 23:49:40
○ 2026-03-08 06:44:30
○ 2026-03-08 06:44:34

○A52.217.68.432026-03-04 → 2026-03-04 · 4 obs

○ 2019-12-16 14:34:28
● 2026-03-04 11:59:30
○ 2026-03-05 07:45:48
○ 2026-03-08 06:44:34

○A52.217.71.1392026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 22:46:26
● 2026-03-06 23:49:40
○ 2026-03-08 06:44:30
○ 2026-03-08 06:44:34

○A52.217.74.2292026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 11:59:30
● 2026-03-05 07:45:48
○ 2026-03-06 22:46:26
○ 2026-03-08 06:44:34

○A52.217.92.2032026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 11:59:30
● 2026-03-05 07:45:48
○ 2026-03-06 22:46:26
○ 2026-03-08 06:44:34

○A54.231.129.2452026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 22:46:26
● 2026-03-06 23:49:40
○ 2026-03-08 06:44:30
○ 2026-03-08 06:44:34

○A54.231.164.1892026-03-05 → 2026-03-05 · 4 obs

○ 2026-03-04 11:59:30
● 2026-03-05 07:45:48
○ 2026-03-06 22:46:26
○ 2026-03-08 06:44:34

●A54.231.165.1332026-03-08 → 2026-03-08 · 3 obs

○ 2026-03-06 23:49:40
● 2026-03-08 06:44:30
● 2026-03-08 06:44:34

●A54.231.197.1012026-03-08 → 2026-03-08 · 3 obs

○ 2026-03-06 23:49:40
● 2026-03-08 06:44:30
● 2026-03-08 06:44:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, c.gtld-servers.net, a.gtld-servers.net, e.gtld-servers.net...	-
jeffosullivan.com	ns-215.awsdns-26.com, ns-662.awsdns-18.net, ns-1039.awsdns-01.org, ns-1871.awsdns-41.co.uk	1 record

✅ Authoritative Response

Server: 205.251.192.215

NS records: ns-215.awsdns-26.com, ns-662.awsdns-18.net, ns-1039.awsdns-01.org, ns-1871.awsdns-41.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jeffosullivan.com (unsigned zone)

⏱️ Timing

Total: 517ms | Queries: -

📄 Records

Type	Count	Sample Data
A	7	`52.216.33.189, 52.216.49.61...`
NS	4	`ns-1039.awsdns-01.org, ns-1871.awsdns-41.co.uk...`
MX	2	`mail.protonmail.ch (pri: 10), mailsec.protonmail.ch (pri: 20)`
TXT	2	`protonmail-verification=11e251c14699572b, v=spf1 include:_spf.protonmail.ch ~all`
SOA	1	`ns-215.awsdns-26.com awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-215.awsdns-26.com)

Analysis

IP Addresses

jeffosullivan.com resolves to eight IP numbers: 3.5.12.105, 3.5.12.163, 3.5.14.144, 16.15.179.181, 16.15.183.172, 52.217.170.101, 54.231.165.133 and 54.231.197.101.

Other host names, for instance joshmoehle.com, installxpress.com, devopsdaysmsn.info, bellroy.rs and semana.co share IP numbers with jeffosullivan.com.

Name Servers

jeffosullivan.com delegates to four name servers: ns-215.awsdns-26.com, ns-662.awsdns-18.net, ns-1039.awsdns-01.org and ns-1871.awsdns-41.co.uk.

jeffosullivan.com at least partially shares name servers with other domains, including apigateway.ap-south-1.amazonaws.com, awsloft.tokyo, asus.gallery, essecielettrica.it and atabix.com.

Host names with two IP numbers: ns-215.awsdns-26.com points to 2600:9000:5300:d700::1 and 205.251.192.215; ns-662.awsdns-18.net points to 2600:9000:5302:9600::1 and 205.251.194.150; ns-1039.awsdns-01.org points to 2600:9000:5304:f00::1 and 205.251.196.15; ns-1871.awsdns-41.co.uk points to 2600:9000:5307:4f00::1 and 205.251.199.79.

Mail Servers

jeffosullivan.com is served by two mail servers mail.protonmail.ch and mailsec.protonmail.ch.

jeffosullivan.com shares the same mail server setup as other domains, for instance afmarini.net, jpg.dk, lexlow.com, zeropager.com and citadelsystems.co.

jeffosullivan.com shares at least some mail servers with other domains, for example frackmacker.com, plusw.de, johnsontec.com, markwald.org and thenaturaldoctors.com.

Host names with three IP numbers:

The host name mail.protonmail.ch resolves to 176.119.200.128, 185.70.42.128 and 185.205.70.128.

The host name mailsec.protonmail.ch resolves to 176.119.200.129, 185.70.42.129 and 185.205.70.129.

jeffosullivan.com - robtex.com