mathprograms.org - dns.ninja

`mathprograms.org`

DNSSEC	⚠️ Not signed
A	152.3.99.226^{🇺🇸 DUKE-INTERCHANGE152.3.0.0/16 Duke 152.3.0.0/16}
		PTR	`nero2.math.duke.edu`
NS	`dns-auth-01.oit.duke.edu` ⭐
		A	152.3.103.93^{🇺🇸 DUKE-INTERCHANGE152.3.0.0/16 Duke 152.3.0.0/16}
			PTR	`dns-auth-01.oit.duke.edu`
NS	`dns-auth-02.oit.duke.edu`
		A	152.3.105.232^{🇺🇸 DUKE-INTERCHANGE152.3.0.0/16 Duke 152.3.0.0/16}
			PTR	`dns-auth-02.oit.duke.edu`
NS	`dns-nc1-01.oit.duke.edu`
		A	67.159.96.12^{🇺🇸 DUKE-INTERCHANGE67.159.64.0/18 Duke 67.159.64.0/18}
			PTR	`dns-nc1-01.oit.duke.edu`
MX	`mathprograms-org.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::4^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj0pr03cu01504.inbound.protection.outlook.com`
		A	2a01:111:f403:c931::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sa9pr03cu00201.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch4pr04cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:f90a::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn8pr03cu00201.inbound.protection.outlook.com`
		A	52.101.9.17^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
		A	52.101.11.7^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sa9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.194.0^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch5pr02cu00200.inbound.protection.outlook.com`
		A	52.101.194.4^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch4pr04cu00104.inbound.protection.outlook.com`
TXT	`v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ip4:152.3.99.226 ip4:...`
TXT	`MS=ms65764357`
TXT	`0ed1fe018aeea3bf39941447dfb934b7e1ddd6e491`
SOA	`dns-auth-01.oit.duke.edu`datacom-hostmaster@duke.edu serial=758822949

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1780960239

WOT: SAFE (74/100)

Subdomains

www.mathprograms.org

Same first word

mathprograms.org

DNS History

9 records (5 active, 4 former)

●NSdns-auth-01.oit.duke.edu2026-02-15 → 2026-06-08 · 3 obs

○ 2018-07-25 13:40:44
● 2026-02-15 10:11:04
● 2026-06-08 23:35:12

●NSdns-auth-02.oit.duke.edu2026-02-15 → 2026-06-08 · 3 obs

○ 2018-07-25 13:40:44
● 2026-02-15 10:11:04
● 2026-06-08 23:35:12

●NSdns-nc1-01.oit.duke.edu2026-02-15 → 2026-06-08 · 3 obs

○ 2018-07-25 13:40:44
● 2026-02-15 10:11:04
● 2026-06-08 23:35:12

○NSns1.r4l.com2015-07-22 → 2018-07-25 · 4 obs

● 2015-07-22 06:46:30
● 2018-07-25 13:40:44
○ 2026-02-15 10:11:04
○ 2026-06-08 23:35:12

○NSns2.r4l.com2015-07-22 → 2018-07-25 · 4 obs

● 2015-07-22 06:46:30
● 2018-07-25 13:40:44
○ 2026-02-15 10:11:04
○ 2026-06-08 23:35:12

○MXaugustus.math.duke.edu2015-07-22 → 2018-07-25 · 4 obs

● 2015-07-22 06:46:30
● 2018-07-25 13:40:44
○ 2026-02-15 10:11:04
○ 2026-06-08 23:35:12

●MXmathprograms-org.mail.protection.outlook.com2026-02-15 → 2026-06-08 · 3 obs

○ 2018-07-25 13:40:44
● 2026-02-15 10:11:04
● 2026-06-08 23:35:12

○A152.3.25.2442015-07-22 → 2018-07-25 · 4 obs

● 2015-07-22 06:46:30
● 2018-07-25 13:40:44
○ 2026-02-15 10:11:04
○ 2026-06-08 23:35:12

●A152.3.99.2262026-02-15 → 2026-06-08 · 3 obs

○ 2018-07-25 13:40:44
● 2026-02-15 10:11:04
● 2026-06-08 23:35:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
mathprograms.org	dns-auth-02.oit.duke.edu, dns-auth-01.oit.duke.edu, dns-nc1-01.oit.duke.edu	-

✅ Authoritative Response

Server:67.159.96.12

NS records: dns-auth-02.oit.duke.edu, dns-auth-01.oit.duke.edu, dns-nc1-01.oit.duke.edu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathprograms.org (unsigned zone)

⏱️ Timing

Total: 470ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`152.3.99.226`
NS	3	`dns-auth-01.oit.duke.edu, dns-nc1-01.oit.duke.edu...`
MX	1	`mathprograms-org.mail.protection.outlook`
TXT	3	`v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}., MS=ms65764357...`
SOA	1	`dns-auth-01.oit.duke.edu datacom-hostmas`

Analysis

Hierarchy

mathprograms.org is the parent zone for www.mathprograms.org.

IP Addresses

mathprograms.org has exactly one IP address — 152.3.99.226.

nero2.math.duke.edu, academicjobsonline.org, mathjobs.org plus two other host names have IP numbers in common with mathprograms.org.

Name Servers

mathprograms.org is served by three name servers: dns-auth-01.oit.duke.edu, dns-auth-02.oit.duke.edu and dns-nc1-01.oit.duke.edu.

mathprograms.org partially shares its NS delegation with several other domains, including auxserv.duke.edu, catholic.duke.edu, papyri.info and two others.

dns-auth-01.oit.duke.edu has IP address 152.3.103.93, dns-auth-02.oit.duke.edu has IP address 152.3.105.232 and dns-nc1-01.oit.duke.edu has IP address 67.159.96.12 — one address each.

Mail Servers

mathprograms.org uses one mail server — mathprograms-org.mail.protection.outlook.com.

The hostname mathprograms-org.mail.protection.outlook.com has 8 IP addresses: 52.101.9.17, 52.101.11.7, 52.101.194.0 and five others.