contribsys.com - dns.ninja

`contribsys.com`

DNSSEC	⚠️ Not signed
A	2606:50c0:8000::153^{🇺🇸 Fastly2606:50c0:8000::/48 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	2606:50c0:8001::153^{🇺🇸 Fastly2606:50c0:8001::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	2606:50c0:8002::153^{🇺🇸 Fastly2606:50c0:8002::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	2606:50c0:8003::153^{🇺🇸 Fastly2606:50c0:8003::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	185.199.108.153^{🇺🇸 Fastly185.199.108.0/24 GitHub - 185.199.108.0/24}
A	185.199.109.153^{🇺🇸 Fastly185.199.109.0/24 GitHub - 185.199.109.0/24}
A	185.199.110.153^{🇺🇸 Fastly185.199.110.0/24 GitHub - 185.199.110.0/24}
A	185.199.111.153^{🇺🇸 Fastly185.199.111.0/24 GitHub - 185.199.111.0/24}
NS	`ns1.dnsimple-edge.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-edge.net`
		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-edge.io`
		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-edge.org`
		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}
MX	`in1-smtp.messagingengine.com` ⭐
		A	103.168.172.216^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-01.messagingengine.com`
		A	103.168.172.217^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-02.messagingengine.com`
		A	103.168.172.218^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-03.messagingengine.com`
		A	103.168.172.219^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-04.messagingengine.com`
		A	103.168.172.220^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-05.messagingengine.com`
		A	103.168.172.221^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-06.messagingengine.com`
		A	103.168.172.222^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-07.messagingengine.com`
		A	103.168.172.223^{🇺🇸 TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`phl-mx-08.messagingengine.com`
MX	`in2-smtp.messagingengine.com`⁽²⁰⁾
		A	202.12.124.216^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-01.messagingengine.com`
		A	202.12.124.217^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-02.messagingengine.com`
		A	202.12.124.218^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-03.messagingengine.com`
		A	202.12.124.219^{TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street}
			PTR	`stl-mx-04.messagingengine.com`
TXT	`google-site-verification=VDSt2ejfmgbmkyj1Rlg_aCnOxb87W1GWhkM_KUngcK4`
TXT	`v=spf1 include:spf.messagingengine.com ?all`
SOA	`ns1.dnsimple-edge.com`admin@dnsimple.com serial=1662595931

`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=1785455412

Same first word

contribsys.com

DNS History

29 records (14 active, 15 former)

○NSbecky.ns.cloudflare.com2015-06-30 → 2020-01-10 · 4 obs

● 2015-06-30 14:24:14
● 2020-01-10 10:37:58
○ 2026-03-08 22:35:24
○ 2026-07-31 00:08:12

●NSns1.dnsimple-edge.com2026-07-24 → 2026-07-31 · 3 obs

○ 2026-05-11 22:55:00
● 2026-07-24 23:01:46
● 2026-07-31 00:08:12

○NSns1.dnsimple.com2026-03-08 → 2026-05-11 · 5 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-05-11 22:55:00
○ 2026-07-24 23:01:46
○ 2026-07-31 00:08:12

●NSns2.dnsimple-edge.net2026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

●NSns3.dnsimple-edge.io2026-07-24 → 2026-07-31 · 3 obs

○ 2026-05-11 22:55:00
● 2026-07-24 23:01:46
● 2026-07-31 00:08:12

○NSns3.dnsimple.com2026-03-08 → 2026-05-11 · 5 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-05-11 22:55:00
○ 2026-07-24 23:01:46
○ 2026-07-31 00:08:12

●NSns4.dnsimple-edge.org2026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

○NStim.ns.cloudflare.com2015-06-30 → 2020-01-10 · 4 obs

● 2015-06-30 14:24:14
● 2020-01-10 10:37:58
○ 2026-03-08 22:35:24
○ 2026-07-31 00:08:12

○MXalt1.aspmx.l.google.com2015-06-30 → 2020-01-10 · 4 obs

● 2015-06-30 14:24:14
● 2020-01-10 10:37:58
○ 2026-03-08 22:35:24
○ 2026-07-31 00:08:12

○MXalt2.aspmx.l.google.com2015-06-30 → 2020-01-10 · 4 obs

● 2015-06-30 14:24:14
● 2020-01-10 10:37:58
○ 2026-03-08 22:35:24
○ 2026-07-31 00:08:12

○MXaspmx.l.google.com2015-06-30 → 2020-01-10 · 4 obs

● 2015-06-30 14:24:14
● 2020-01-10 10:37:58
○ 2026-03-08 22:35:24
○ 2026-07-31 00:08:12

○MXaspmx2.googlemail.com2015-06-30 → 2020-01-10 · 4 obs

● 2015-06-30 14:24:14
● 2020-01-10 10:37:58
○ 2026-03-08 22:35:24
○ 2026-07-31 00:08:12

○MXaspmx3.googlemail.com2015-06-30 → 2020-01-10 · 4 obs

● 2015-06-30 14:24:14
● 2020-01-10 10:37:58
○ 2026-03-08 22:35:24
○ 2026-07-31 00:08:12

●MXin1-smtp.messagingengine.com2026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

●MXin2-smtp.messagingengine.com2026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

○A104.28.2.1062015-06-30 → 2020-01-10 · 4 obs

● 2015-06-30 14:24:14
● 2020-01-10 10:37:58
○ 2026-03-08 22:35:24
○ 2026-07-31 00:08:12

○A104.28.3.1062015-06-30 → 2020-01-10 · 4 obs

● 2015-06-30 14:24:14
● 2020-01-10 10:37:58
○ 2026-03-08 22:35:24
○ 2026-07-31 00:08:12

●A185.199.108.1532026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

●A185.199.109.1532026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

●A185.199.110.1532026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

●A185.199.111.1532026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

○A2400:cb00:2048:1::681c:26a2017-02-17 → 2017-02-17 · 4 obs

○ 2015-06-30 14:24:14
● 2017-02-17 02:26:28
○ 2020-01-10 10:37:58
○ 2026-07-31 00:08:12

○A2400:cb00:2048:1::681c:36a2017-02-17 → 2017-02-17 · 4 obs

○ 2015-06-30 14:24:14
● 2017-02-17 02:26:28
○ 2020-01-10 10:37:58
○ 2026-07-31 00:08:12

○A2606:4700:30::681c:26a2020-01-10 → 2020-01-10 · 4 obs

○ 2017-02-17 02:26:28
● 2020-01-10 10:37:58
○ 2026-03-08 22:35:24
○ 2026-07-31 00:08:12

○A2606:4700:30::681c:36a2020-01-10 → 2020-01-10 · 4 obs

○ 2017-02-17 02:26:28
● 2020-01-10 10:37:58
○ 2026-03-08 22:35:24
○ 2026-07-31 00:08:12

●A2606:50c0:8000::1532026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

●A2606:50c0:8001::1532026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

●A2606:50c0:8002::1532026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

●A2606:50c0:8003::1532026-03-08 → 2026-07-31 · 3 obs

○ 2020-01-10 10:37:58
● 2026-03-08 22:35:24
● 2026-07-31 00:08:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net, l.gtld-servers.net...	-
contribsys.com	ns4.dnsimple-edge.org, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns1.dnsimple-edge.com	2 records

✅ Authoritative Response

Server:199.247.152.53

NS records: ns4.dnsimple-edge.org, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns1.dnsimple-edge.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for contribsys.com (unsigned zone)

⏱️ Timing

Total: 497ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`185.199.108.153, 185.199.109.153...`
AAAA	4	`2606:50c0:8000::153, 2606:50c0:8001::153...`
NS	4	`ns1.dnsimple-edge.com, ns2.dnsimple-edge.net...`
MX	2	`in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20)`
TXT	2	`google-site-verification=VDSt2ejfmgbmkyj, v=spf1 include:spf.messagingengine.com ?`
SOA	1	`ns1.dnsimple-edge.com admin.dnsimple.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.dnsimple-edge.com, ns1.dnsimple-edge.com)

Analysis

IP Addresses

contribsys.com directs to 8 IP numbers: 185.199.108.153, 185.199.109.153, 185.199.110.153 and 5 other.

Two other host names, along with ryosakai.com, dawateislamic.github.io and mko-x.github.io, also share IP numbers with contribsys.com.

Name Servers

The NS records for contribsys.com point to four name servers: ns1.dnsimple-edge.com, ns3.dnsimple-edge.io, ns2.dnsimple-edge.net and ns4.dnsimple-edge.org.

There is at least partial name server overlap between contribsys.com and other domains — justdigitalsignage.com.au, besmartbuycheap.com, davidsmalley.com and two more among them.

These name servers frequently co-occur with the name servers ns1.dnsimple.com and ns3.dnsimple.com.

All four hostnames — ns1.dnsimple-edge.com, ns3.dnsimple-edge.io, ns2.dnsimple-edge.net and ns4.dnsimple-edge.org — resolve to two IP numbers apiece: ns1.dnsimple-edge.com to 199.247.152.53 and 2620:111:8004::53; ns3.dnsimple-edge.io to 199.247.154.53 and 2620:111:8006::53; ns2.dnsimple-edge.net to 199.247.153.53 and 2620:111:8005::53; ns4.dnsimple-edge.org to 199.247.155.53 and 2620:111:8007::53.

Mail Servers

contribsys.com is served by two mail servers, in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

Among the domains sharing a mail server setup with contribsys.com are dornbos.org, waremail.net, mail.sokradev.com and two others.

contribsys.com and other domains — tenire.com for instance — share at least some mail servers.

DNS names with 8 IP addresses:

Hostname in1-smtp.messagingengine.com directs to 103.168.172.216, 103.168.172.217 and 103.168.172.218 along with 5 other IP addresses.

Host names that resolve to four IP numbers:

in2-smtp.messagingengine.com resolves to four IP addresses — 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.