mathdown.net - dns.ninja

`mathdown.net`

DNSSEC	⚠️ Not signed
A	2600:1f18:16e:df01::258^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	2600:1f18:16e:df01::259^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	18.208.88.157^{🇺🇸 Amazon18.208.0.0/13 EC2 IAD prefix}
A	98.84.224.111^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
NS	`ns1.dnsimple.com` ⭐
		A	2620:111:8004::53^{🇺🇸 AS327712620:111:8004::/48 DNSimple Corporation}
		A	199.247.152.53^{🇺🇸 AS32771199.247.152.0/24 DNSimple Corporation}
NS	`ns2.dnsimple.com`
		A	2620:111:8005::53^{🇺🇸 AS327712620:111:8005::/48 Vultr Customer Route}
		A	199.247.153.53^{🇺🇸 AS32771199.247.153.0/24 Vultr Customer Route}
NS	`ns3.dnsimple.com`
		A	2620:111:8006::53^{🇺🇸 AS327712620:111:8006::/48 DNSimple Corporation}
		A	199.247.154.53^{🇺🇸 AS32771199.247.154.0/24 DNSimple Corporation}
NS	`ns4.dnsimple.com`
		A	2620:111:8007::53^{🇺🇸 AS327712620:111:8007::/48 Vultr Customer Route}
		A	199.247.155.53^{🇺🇸 AS32771199.247.155.0/24 Vultr Customer Route}
SOA	`ns1.dnsimple.com`admin@dnsimple.com serial=1439404509

`net`

	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=1785096242

Same first word

mathdown.com

mathdown.net

DNS History

66 records (8 active, 58 former)

○NScortney.ns.cloudflare.com2015-07-21 → 2015-07-21 · 3 obs

● 2015-07-21 08:11:28
○ 2015-12-03 14:49:40
○ 2026-07-26 20:26:44

○NShugh.ns.cloudflare.com2015-07-21 → 2015-07-21 · 3 obs

● 2015-07-21 08:11:28
○ 2015-12-03 14:49:40
○ 2026-07-26 20:26:44

●NSns1.dnsimple.com2015-12-03 → 2026-07-26 · 3 obs

○ 2015-07-21 08:11:28
● 2015-12-03 14:49:40
● 2026-07-26 20:26:44

●NSns2.dnsimple.com2015-12-03 → 2026-07-26 · 3 obs

○ 2015-07-21 08:11:28
● 2015-12-03 14:49:40
● 2026-07-26 20:26:44

●NSns3.dnsimple.com2015-12-03 → 2026-07-26 · 3 obs

○ 2015-07-21 08:11:28
● 2015-12-03 14:49:40
● 2026-07-26 20:26:44

●NSns4.dnsimple.com2015-12-03 → 2026-07-26 · 3 obs

○ 2015-07-21 08:11:28
● 2015-12-03 14:49:40
● 2026-07-26 20:26:44

○MXfb.mail.gandi.net2015-07-21 → 2015-07-21 · 3 obs

● 2015-07-21 08:11:28
○ 2015-12-03 14:49:40
○ 2026-07-26 20:26:44

○MXspool.mail.gandi.net2015-07-21 → 2015-07-21 · 3 obs

● 2015-07-21 08:11:28
○ 2015-12-03 14:49:40
○ 2026-07-26 20:26:44

○A13.52.188.952026-04-08 → 2026-07-26 · 80 obs

○ 2026-04-08 01:33:14
● 2026-04-08 09:25:54
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● 2026-07-26 13:48:56
○ 2026-07-26 20:26:44

●A18.208.88.1572026-03-18 → 2026-07-26 · 153 obs

○ 2018-05-25 13:38:50
● 2026-03-18 21:27:36
○ 2026-03-19 01:55:38
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○A23.22.44.1292015-07-21 → 2015-07-21 · 3 obs

● 2015-07-21 08:11:28
○ 2015-12-03 14:49:40
○ 2026-07-26 20:26:44

●A2600:1f18:16e:df01::2582026-03-18 → 2026-07-26 · 133 obs

○ 2018-05-25 13:38:50
● 2026-03-18 21:27:36
○ 2026-03-19 01:55:38
● 2026-03-22 00:47:00
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●A2600:1f18:16e:df01::2592026-03-18 → 2026-07-26 · 133 obs

○A2600:1f1c:446:4900::2582026-03-22 → 2026-07-24 · 80 obs

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○A2600:1f1c:446:4900::2592026-03-22 → 2026-07-24 · 80 obs

○A2a05:d014:58f:6200::2582026-03-19 → 2026-07-26 · 116 obs

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○A2a05:d014:58f:6200::2592026-03-19 → 2026-07-26 · 116 obs

○A34.204.22.72018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A34.206.253.532018-05-25 → 2018-05-25 · 4 obs

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○A34.206.9.962018-05-25 → 2018-05-25 · 4 obs

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○A34.224.230.2412018-05-25 → 2018-05-25 · 4 obs

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○A34.225.24.2302018-05-25 → 2018-05-25 · 4 obs

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○A34.231.150.1162018-05-25 → 2018-05-25 · 4 obs

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○A34.232.181.1062018-05-25 → 2018-05-25 · 4 obs

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○A34.236.164.472018-05-25 → 2018-05-25 · 4 obs

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○A34.238.48.572018-05-25 → 2018-05-25 · 4 obs

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○A34.239.63.982018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A35.157.26.1352026-03-19 → 2026-07-26 · 117 obs

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○A52.0.104.1442018-05-25 → 2018-05-25 · 4 obs

○ 2017-03-20 21:41:46
● 2018-05-25 13:38:50
○ 2026-03-18 21:27:36
○ 2026-07-26 20:26:44

○A52.1.117.852018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
○ 2026-03-18 21:27:36
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○A52.1.35.1842018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○ 2026-07-26 20:26:44

○A52.1.65.1992018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○ 2026-07-26 20:26:44

○A52.20.145.1212018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○ 2026-07-26 20:26:44

○A52.204.188.972018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.207.5.1582018-05-25 → 2018-05-25 · 4 obs

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○A52.21.108.2482018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.22.127.2242018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.22.2.1492018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.22.213.1572018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.23.126.2232018-05-25 → 2018-05-25 · 4 obs

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○A52.3.63.22018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.4.95.482018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.44.144.1992018-05-25 → 2018-05-25 · 4 obs

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○A52.44.230.612018-05-25 → 2018-05-25 · 4 obs

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○A52.44.53.642018-05-25 → 2018-05-25 · 4 obs

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○A52.5.182.1762018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.52.192.1912026-04-08 → 2026-07-26 · 80 obs

○A52.71.238.1022018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.72.251.1642018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.72.80.1902018-05-25 → 2018-05-25 · 4 obs

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○A52.73.140.1272018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.86.186.1822018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A52.87.35.922018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A54.152.208.692018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A54.156.237.2492018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A54.164.206.442018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A54.172.170.1602018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○ 2026-07-26 20:26:44

○A54.173.32.2122018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A54.174.44.1912018-05-25 → 2018-05-25 · 4 obs

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● 2018-05-25 13:38:50
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○A54.175.98.1372018-05-25 → 2018-05-25 · 4 obs

○ 2017-03-20 21:41:46
● 2018-05-25 13:38:50
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○A54.209.18.852018-05-25 → 2018-05-25 · 4 obs

○ 2017-03-20 21:41:46
● 2018-05-25 13:38:50
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○A54.209.180.892018-05-25 → 2018-05-25 · 4 obs

○ 2017-03-20 21:41:46
● 2018-05-25 13:38:50
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○A54.209.64.712018-05-25 → 2018-05-25 · 4 obs

○ 2017-03-20 21:41:46
● 2018-05-25 13:38:50
○ 2026-03-18 21:27:36
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○A54.84.62.102015-12-03 → 2017-03-20 · 5 obs

○ 2015-07-21 08:11:28
● 2015-12-03 14:49:40
● 2017-03-20 21:41:46
○ 2018-05-25 13:38:50
○ 2026-07-26 20:26:44

○A63.176.8.2182026-03-19 → 2026-07-26 · 117 obs

●A98.84.224.1112026-03-18 → 2026-07-26 · 153 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	m.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net...	-
mathdown.net	ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com, ns4.dnsimple.com	-

✅ Authoritative Response

Server:199.247.154.53

NS records: ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com, ns4.dnsimple.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathdown.net (unsigned zone)

⏱️ Timing

Total: 494ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`18.208.88.157, 98.84.224.111`
AAAA	2	`2600:1f18:16e:df01::258, 2600:1f18:16e:df01::259`
NS	4	`ns1.dnsimple.com, ns2.dnsimple.com...`
SOA	1	`ns1.dnsimple.com admin.dnsimple.com`

Analysis

IP Addresses

mathdown.net resolves to four IP addresses: 18.208.88.157, 98.84.224.111, 2600:1f18:16e:df01::258 and 2600:1f18:16e:df01::259.

autodiscover.jhwebdev.com, bauke.xyz, imaginarybeasts.net plus two other host names have IP numbers in common with mathdown.net.

Name Servers

Four name servers handle the delegation for mathdown.net: ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com and ns4.dnsimple.com.

mathdown.net partially shares its NS delegation with several other domains, including passionivicine.com, useampmediasales.org, promedcert.com and two others.

In DNS configurations, these name servers often share authority with ns4.dnsimple-edge.org, ns2.dnsimple-edge.net, ns1.ordereze.net and 3 other name servers.

ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com and ns4.dnsimple.com each carry two IP addresses. ns1.dnsimple.com has 199.247.152.53 and 2620:111:8004::53; ns2.dnsimple.com has 199.247.153.53 and 2620:111:8005::53; ns3.dnsimple.com has 199.247.154.53 and 2620:111:8006::53; ns4.dnsimple.com has 199.247.155.53 and 2620:111:8007::53.