`mathematics-weekly.org`

DNSSEC	⚠️ Not signed
A	2606:50c0:8001::153^{🇺🇸 Fastly2606:50c0:8001::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	185.199.109.153^{🇺🇸 Fastly185.199.109.0/24 GitHub - 185.199.109.0/24}
NS	`docks04.rzone.de` ⭐
		A	2001:8d8:fe:53:5747:2a74:d:4^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`docks04.rzone.de`
		A	217.160.80.131^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`docks04.rzone.de`
NS	`shades12.rzone.de`
		A	2607:f1c0:fe:53:185:132:34:139^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`shades12.rzone.de`
		A	185.132.34.139^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`shades12.rzone.de`
MX	`smtpin.rzone.de` ⭐
		A	2a01:238:20a:202:50f0::1097^{🇩🇪 STRATO2a01:238:20a::/48 Strato AG}
			PTR	`smtpin.rzone.de`
		A	81.169.145.97^{🇩🇪 STRATO81.169.144.0/22 AG}
			PTR	`smtpin.rzone.de`
SOA	`docks04.rzone.de`hostmaster@strato-rz.de 2025-01-01 #30

`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=1776101537

Same first word

mathematics-weekly.org

DNS History

5 records (5 active, 0 former)

●NSdocks04.rzone.de2026-04-06 → 2026-04-13 · 2 obs

● 2026-04-06 15:06:10
● 2026-04-13 17:59:48

●NSshades12.rzone.de2026-04-06 → 2026-04-13 · 2 obs

● 2026-04-06 15:06:10
● 2026-04-13 17:59:48

●MXsmtpin.rzone.de2026-04-06 → 2026-04-13 · 2 obs

● 2026-04-06 15:06:10
● 2026-04-13 17:59:48

●A185.199.109.1532026-04-06 → 2026-04-13 · 2 obs

● 2026-04-06 15:06:10
● 2026-04-13 17:59:48

●A2606:50c0:8001::1532026-04-06 → 2026-04-13 · 2 obs

● 2026-04-06 15:06:10
● 2026-04-13 17:59:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
mathematics-weekly.org	docks04.rzone.de, shades12.rzone.de	-

✅ Authoritative Response

Server:217.160.80.131

NS records: docks04.rzone.de, shades12.rzone.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathematics-weekly.org (unsigned zone)

⏱️ Timing

Total: 611ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.199.109.153`
AAAA	1	`2606:50c0:8001::153`
NS	2	`shades12.rzone.de, docks04.rzone.de`
MX	1	`smtpin.rzone.de (pri: 5)`
SOA	1	`docks04.rzone.de hostmaster.strato-rz.de`

Analysis

IP Addresses

mathematics-weekly.org resolves to two IP numbers: 2606:50c0:8001::153 and 185.199.109.153.

other host names including duckfacts.com, omkarvelonde.github.io, www.aath0.github.io, gocircuit.github.io and www-netflix-sign.github.io share IP numbers with mathematics-weekly.org.

Name Servers

mathematics-weekly.org is delegated to two name servers docks04.rzone.de and shades12.rzone.de.

mathematics-weekly.org shares the same name server setup as other domains, for instance poel-online.de, rastafarich.de, ra-graebnernet.de, quindo.nl and fahrschulefun.com.

mathematics-weekly.org at least partially shares name servers with other domains, for instance huygensapotheek.nl, care-royal.de, c-sub.de, irish-fiddler-dresden.de and jeozen.de.

These name servers are commonly used with the following name servers: shades07.rzone.de, docks17.rzone.de, shades11.rzone.de, shades18.rzone.de, shades05.rzone.de, shades19.rzone.de, docks08.rzone.de, docks15.rzone.de, shades13.rzone.de and shades02.rzone.de.

Host names with two IP numbers:

The host name docks04.rzone.de points to 2001:8d8:fe:53:5747:2a74:d:4 and 217.160.80.131; the host name shades12.rzone.de points to 2607:f1c0:fe:53:185:132:34:139 and 185.132.34.139.

Mail Servers

mathematics-weekly.org is handled by a single mail server, smtpin.rzone.de.

mathematics-weekly.org shares the same mail server setup as other domains, for instance hcs24.eu, kaross.de, paul-huber.de, prorendite.com and senseful.de.

smtpin.rzone.de resolves to two IP numbers: 2a01:238:20a:202:50f0::1097 and 81.169.145.97.

mathematics-weekly.org - robtex.com