schaefer-systems.com - robtex.com

schaefer-systems.com

DNSSEC⚠️ Not signed
A2606:4700:3036::6815:4881🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:b8da🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.72.129Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.184.218🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSclyde.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b5b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclyde.ns.cloudflare.com
A2803:f800:50::6ca2:c15b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRclyde.ns.cloudflare.com
A2a06:98c1:50::ac40:215b🇺🇸 Cloudflare2a06:98c1:50::/45
PTRclyde.ns.cloudflare.com
A108.162.193.91🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclyde.ns.cloudflare.com
A172.64.33.91🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclyde.ns.cloudflare.com
A173.245.59.91🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRclyde.ns.cloudflare.com
NStreasure.ns.cloudflare.com
A2606:4700:50::a29f:2674🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtreasure.ns.cloudflare.com
A2803:f800:50::6ca2:c274🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRtreasure.ns.cloudflare.com
A2a06:98c1:50::ac40:2274🇺🇸 Cloudflare2a06:98c1:50::/45
PTRtreasure.ns.cloudflare.com
A108.162.194.116🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtreasure.ns.cloudflare.com
A162.159.38.116Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtreasure.ns.cloudflare.com
A172.64.34.116🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtreasure.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c19::1a🇺🇸 Google2607:f8b0:4004::/48
PTRbk-in-f26.1e100.net
A192.178.155.27🇺🇸 Google192.178.155.0/24
PTRyuiadrs-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c0f::1a🇨🇱 Google2800:3f0:4003::/48
A108.177.123.27🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1b🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f27.1e100.net
A172.253.116.26🇺🇸 Google172.253.116.0/24
PTRdj-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.26🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:400c:c23::1a🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f26.1e100.net
A172.253.157.26🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f26.1e100.net
TXTgoogle-site-verification=A-9lh4Xy2XLBtPR6d2-TBKiLH2d8FadQGwKvTcb5eNQ
TXTgoogle-site-verification=G5N4MMekCefIve4A0x1kxMSdzrE_Mh1ug-C89ej7nHc
TXTv=spf1 include:_spf.google.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.72.129, 172.67.184.218
IPv6 hints2606:4700:3036::6815:4881, 2606:4700:3036::ac43:b8da
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=123, name=cloudflare-ech.com
SOAclyde.ns.cloudflare.comdns@cloudflare.com serial=2406531101

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1784052362

Same first word

schaefer-systems.com

DNS History

19 records (11 active, 8 former)

200920112013201520172019202120232025NSclyde.ns.cloudflare.comtreasure.ns.cloudflare.comfriday.dns1.oregonnames.comfriday.dns2.oregonnames.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA104.21.72.129172.67.184.2182606:4700:3036::6815:48812606:4700:3036::ac43:b8da188.114.96.0188.114.97.0207.189.104.86216.162.200.2002a06:98c1:3120::2a06:98c1:3121::
●NSclyde.ns.cloudflare.com2026-02-28 → 2026-07-14 · 3 obs
○ 2015-10-14 22:08:14
● 2026-02-28 00:59:56
● 2026-07-14 18:14:14
○NSfriday.dns1.oregonnames.com2008-03-15 → 2008-03-15 · 3 obs
● 2008-03-15 21:23:42
○ 2015-10-14 22:08:14
○ 2026-07-14 18:14:14
○NSfriday.dns2.oregonnames.com2008-03-15 → 2008-03-15 · 3 obs
● 2008-03-15 21:23:42
○ 2015-10-14 22:08:14
○ 2026-07-14 18:14:14
●NStreasure.ns.cloudflare.com2026-02-28 → 2026-07-14 · 3 obs
○ 2015-10-14 22:08:14
● 2026-02-28 00:59:56
● 2026-07-14 18:14:14
●MXalt1.aspmx.l.google.com2026-02-28 → 2026-07-14 · 2 obs
● 2026-02-28 00:59:56
● 2026-07-14 18:14:14
●MXalt2.aspmx.l.google.com2026-02-28 → 2026-07-14 · 2 obs
● 2026-02-28 00:59:56
● 2026-07-14 18:14:14
●MXalt3.aspmx.l.google.com2026-02-28 → 2026-07-14 · 2 obs
● 2026-02-28 00:59:56
● 2026-07-14 18:14:14
●MXalt4.aspmx.l.google.com2026-02-28 → 2026-07-14 · 2 obs
● 2026-02-28 00:59:56
● 2026-07-14 18:14:14
●MXaspmx.l.google.com2026-02-28 → 2026-07-14 · 2 obs
● 2026-02-28 00:59:56
● 2026-07-14 18:14:14
●A104.21.72.1292026-07-01 → 2026-07-14 · 5 obs
○ 2026-05-08 10:46:06
● 2026-07-01 21:48:18
○ 2026-07-02 16:31:42
● 2026-07-14 18:14:12
● 2026-07-14 18:14:14
●A172.67.184.2182026-07-01 → 2026-07-14 · 5 obs
○ 2026-05-08 10:46:06
● 2026-07-01 21:48:18
○ 2026-07-02 16:31:42
● 2026-07-14 18:14:12
● 2026-07-14 18:14:14
○A188.114.96.02026-07-02 → 2026-07-02 · 4 obs
○ 2026-07-01 21:48:18
● 2026-07-02 16:31:42
○ 2026-07-14 18:14:12
○ 2026-07-14 18:14:14
○A188.114.97.02026-07-02 → 2026-07-02 · 4 obs
○ 2026-07-01 21:48:18
● 2026-07-02 16:31:42
○ 2026-07-14 18:14:12
○ 2026-07-14 18:14:14
○A207.189.104.862008-03-15 → 2008-03-15 · 3 obs
● 2008-03-15 21:23:42
○ 2015-10-14 22:08:14
○ 2026-07-14 18:14:14
○A216.162.200.2002026-05-08 → 2026-05-08 · 4 obs
○ 2015-10-14 22:08:14
● 2026-05-08 10:46:06
○ 2026-07-01 21:48:18
○ 2026-07-14 18:14:14
●A2606:4700:3036::6815:48812026-07-01 → 2026-07-14 · 5 obs
○ 2026-05-08 10:46:06
● 2026-07-01 21:48:18
○ 2026-07-02 16:31:42
● 2026-07-14 18:14:12
● 2026-07-14 18:14:14
●A2606:4700:3036::ac43:b8da2026-07-01 → 2026-07-14 · 5 obs
○ 2026-05-08 10:46:06
● 2026-07-01 21:48:18
○ 2026-07-02 16:31:42
● 2026-07-14 18:14:12
● 2026-07-14 18:14:14
○A2a06:98c1:3120::2026-07-02 → 2026-07-02 · 4 obs
○ 2026-07-01 21:48:18
● 2026-07-02 16:31:42
○ 2026-07-14 18:14:12
○ 2026-07-14 18:14:14
○A2a06:98c1:3121::2026-07-02 → 2026-07-02 · 4 obs
○ 2026-07-01 21:48:18
● 2026-07-02 16:31:42
○ 2026-07-14 18:14:12
○ 2026-07-14 18:14:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
schaefer-systems.comclyde.ns.cloudflare.com, treasure.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.91

NS records: clyde.ns.cloudflare.com, treasure.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for schaefer-systems.com (unsigned zone)

⏱️ Timing

Total: 290ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.184.218, 104.21.72.129
AAAA22606:4700:3036::6815:4881, 2606:4700:3036::ac43:b8da
NS2clyde.ns.cloudflare.com, treasure.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT3google-site-verification=A-9lh4Xy2XLBtPR, google-site-verification=G5N4MMekCefIve4...
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1clyde.ns.cloudflare.com dns.cloudflare.c

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (clyde.ns.cloudflare.com, clyde.ns.cloudflare.com, clyde.ns.cloudflare.com...)

Analysis

IP Addresses

schaefer-systems.com resolves to four IP addresses: 104.21.72.129, 172.67.184.218, 2606:4700:3036::6815:4881 and 2606:4700:3036::ac43:b8da.

Among the host names that share IP numbers with schaefer-systems.com are hughgw.ahmridn.vatffelveo.com, changsha.vatffelveo.com, 1003a6.vatffelveo.com and two others.

Name Servers

The NS records for schaefer-systems.com delegate to clyde.ns.cloudflare.com and treasure.ns.cloudflare.com.

schaefer-systems.com has the same name server delegation as a number of other domains, such as mfreeth.com, rupieciarnia.com.pl, houstonmedic.com and two more.

schaefer-systems.com has at least partial name server overlap with other domains, such as diyatiantian.com, livestax.com, medicinadisegnale.it and two others.

It is common to see these name servers used together with name servers mike.ns.cloudflare.com and titan.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

clyde.ns.cloudflare.com maps to 108.162.193.91, 172.64.33.91, 173.245.59.91 and 3 additional IP addresses.

treasure.ns.cloudflare.com maps to 108.162.194.116, 162.159.38.116, 172.64.34.116 and 3 additional IP addresses.

Mail Servers

schaefer-systems.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

schaefer-systems.com shares at least some of its mail servers with other domains — for example ns500821.ns500821.ns500794.ns500841.ns500794.ns500821.ns500795.ns500821.ns500795.lustypartnersfinder.com, ns500758.ns500758.ns500758.ns500759.ns500758.ns500698.ns500698.ns500735.ns500735.ns500708.ns500576.ns500576.ns500686.ns500576.trackreceptor.com, ns500758.ns500759.ns500759.ns500758.ns500698.ns500758.ns500736.ns500735.ns500735.ns500736.ns500576.ns500708.ns500576.trackreceptor.com and two more.

It is common to find these mail servers paired with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 more.

Hosts with two IP numbers each:

The A records for aspmx.l.google.com return 192.178.155.27 and 2607:f8b0:4004:c19::1a.

The A records for alt1.aspmx.l.google.com return 108.177.123.27 and 2800:3f0:4003:c0f::1a.

The A records for alt2.aspmx.l.google.com return 172.253.116.26 and 2a00:1450:400b:c02::1b.

The A records for alt3.aspmx.l.google.com return 192.178.223.26 and 2a00:1450:4009:c0f::1a.

The A records for alt4.aspmx.l.google.com return 172.253.157.26 and 2a00:1450:400c:c23::1a.