`circuitblocks.com`

DNSSEC	⚠️ Not signed
A	216.250.120.153^{🇺🇸 IONOS-AS216.250.112.0/20 1&1 Internet Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
		PTR	`perfora.net`
NS	`ns1021.ui-dns.org` ⭐
		A	2001:8d8:fe:53:0:d9a0:5315:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1021.ui-dns.org`
		A	217.160.83.21^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1021.ui-dns.org`
NS	`ns1021.ui-dns.biz`
		A	2001:8d8:fe:53:0:d9a0:5115:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1021.ui-dns.biz`
		A	217.160.81.21^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1021.ui-dns.biz`
NS	`ns1021.ui-dns.com`
		A	2001:8d8:fe:53:0:d9a0:5215:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1021.ui-dns.com`
		A	217.160.82.21^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1021.ui-dns.com`
NS	`ns1021.ui-dns.de`
		A	2001:8d8:fe:53:0:d9a0:5015:100^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns1021.ui-dns.de`
		A	217.160.80.21^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns1021.ui-dns.de`
MX	`mx00.ionos.com` ⭐
		A	74.208.5.3^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx00.perfora.net`
MX	`mx01.ionos.com` ⭐
		A	74.208.5.21^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
			PTR	`mx01.perfora.net`
TXT	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	`ns1021.ui-dns.org`hostmaster@1and1.com 2016-06-16 #3

`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=1778388046

Same first word

circuitblocks.com

DNS History

12 records (7 active, 5 former)

●NSns1021.ui-dns.biz2026-03-30 → 2026-05-10 · 3 obs

○ 2017-05-23 05:03:10
● 2026-03-30 16:35:00
● 2026-05-10 04:48:08

●NSns1021.ui-dns.com2026-03-30 → 2026-05-10 · 3 obs

○ 2017-05-23 05:03:10
● 2026-03-30 16:35:00
● 2026-05-10 04:48:08

●NSns1021.ui-dns.de2026-03-30 → 2026-05-10 · 3 obs

○ 2017-05-23 05:03:10
● 2026-03-30 16:35:00
● 2026-05-10 04:48:08

●NSns1021.ui-dns.org2026-03-30 → 2026-05-10 · 3 obs

○ 2017-05-23 05:03:10
● 2026-03-30 16:35:00
● 2026-05-10 04:48:08

○NSns57.1and1.com2015-08-16 → 2017-05-23 · 4 obs

● 2015-08-16 11:43:26
● 2017-05-23 05:03:10
○ 2026-03-30 16:35:00
○ 2026-05-10 04:48:08

○NSns58.1and1.com2015-08-16 → 2017-05-23 · 4 obs

● 2015-08-16 11:43:26
● 2017-05-23 05:03:10
○ 2026-03-30 16:35:00
○ 2026-05-10 04:48:08

○MXmx00.1and1.com2015-08-16 → 2017-05-23 · 4 obs

● 2015-08-16 11:43:26
● 2017-05-23 05:03:10
○ 2026-03-30 16:35:00
○ 2026-05-10 04:48:08

●MXmx00.ionos.com2026-03-30 → 2026-05-10 · 3 obs

○ 2017-05-23 05:03:10
● 2026-03-30 16:35:00
● 2026-05-10 04:48:08

○MXmx01.1and1.com2015-08-16 → 2017-05-23 · 4 obs

● 2015-08-16 11:43:26
● 2017-05-23 05:03:10
○ 2026-03-30 16:35:00
○ 2026-05-10 04:48:08

●MXmx01.ionos.com2026-03-30 → 2026-05-10 · 3 obs

○ 2017-05-23 05:03:10
● 2026-03-30 16:35:00
● 2026-05-10 04:48:08

●A216.250.120.1532016-09-10 → 2026-05-10 · 3 obs

○ 2016-03-20 01:06:36
● 2016-09-10 04:43:18
● 2026-05-10 04:48:08

○A74.208.169.2042015-08-16 → 2016-03-20 · 4 obs

● 2015-08-16 11:43:26
● 2016-03-20 01:06:36
○ 2016-09-10 04:43:18
○ 2026-05-10 04:48:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, d.gtld-servers.net, g.gtld-servers.net, l.gtld-servers.net...	-
circuitblocks.com	ns1021.ui-dns.de, ns1021.ui-dns.biz, ns1021.ui-dns.org, ns1021.ui-dns.com	2 records

✅ Authoritative Response

Server:217.160.80.21

NS records: ns1021.ui-dns.de, ns1021.ui-dns.biz, ns1021.ui-dns.org, ns1021.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for circuitblocks.com (unsigned zone)

⏱️ Timing

Total: 1039ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`216.250.120.153`
NS	4	`ns1021.ui-dns.de, ns1021.ui-dns.com...`
MX	2	`mx00.ionos.com (pri: 10), mx01.ionos.com (pri: 10)`
TXT	1	`v=spf1 include:_spf-us.ionos.com ~all`
SOA	1	`ns1021.ui-dns.org hostmaster.1and1.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1021.ui-dns.com, ns1021.ui-dns.com)

Analysis

IP Addresses

circuitblocks.com points to a single IP: 216.250.120.153.

Other host names, for instance malpractice-medical-insurance.com, radtopia.com, globalweb.org, vintagetopia.com and tweetnetworking.com share IP numbers with circuitblocks.com.

Name Servers

circuitblocks.com is delegated to four name servers: ns1021.ui-dns.biz, ns1021.ui-dns.com, ns1021.ui-dns.de and ns1021.ui-dns.org.

circuitblocks.com at least partially shares its name servers with other domains, for instance ultradads.com, nenewrites.com, zahnaerzte-bruehl.de, aktionsware.de and clinicaviher.com.

these name servers are commonly used together with ns1105.ui-dns.de, ns1033.ui-dns.com, ns1029.ui-dns.org and ns1099.ui-dns.de.

Host names with two IPs: ns1021.ui-dns.biz points to 2001:8d8:fe:53:0:d9a0:5115:100 and 217.160.81.21; ns1021.ui-dns.com points to 2001:8d8:fe:53:0:d9a0:5215:100 and 217.160.82.21; ns1021.ui-dns.de points to 2001:8d8:fe:53:0:d9a0:5015:100 and 217.160.80.21; ns1021.ui-dns.org points to 2001:8d8:fe:53:0:d9a0:5315:100 and 217.160.83.21.

Mail Servers

Two mail servers mx00.ionos.com and mx01.ionos.com handle circuitblocks.com.

circuitblocks.com uses the same mail server setup as other domains such as postygo.com, crownlaw.legal, smasherball.com, biblebasis.org and juice-man-delivery.com.

Host names with a single IP:

mx00.ionos.com resolves to 74.208.5.3.

mx01.ionos.com resolves to 74.208.5.21.

circuitblocks.com - robtex.com