csi4u.com - robtex.com
csi4u.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2607:f1c0:100f:f000::2e2🇺🇸 IONOS-AS2607:f1c0::/32 1&1 Internet Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US | ||||||
| PTR | 2607-f1c0-100f-f000-0000-0000-0000-02e2.elastic-ssl.ui-r.com | ||||||
| A | 74.208.236.167🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc. | ||||||
| NS | ns57.1and1.com ⭐ | ||||||
| A | 2001:8d8:fe:53:0:d9a0:5220:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific | ||||||
| PTR | ns1032.ui-dns.com | ||||||
| A | 217.160.82.32🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific | ||||||
| PTR | ns1032.ui-dns.com | ||||||
| NS | ns58.1and1.com | ||||||
| A | 2001:8d8:fe:53:0:d9a0:531f:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific | ||||||
| PTR | ns1031.ui-dns.org | ||||||
| A | 217.160.83.31🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific | ||||||
| PTR | ns1031.ui-dns.org | ||||||
| MX | mx00.1and1.com ⭐ | ||||||
| A | 74.208.5.3🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc. | ||||||
| PTR | mx00.perfora.net | ||||||
| MX | mx01.1and1.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 | ns57.1and1.comhostmaster@1and1.com 2017-06-07 #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.netnstld@verisign-grs.com serial=1774402057 | ||||||
Subdomains
www.csi4u.com |
Same first word
Similar names
isc4u.de |
sci4u.eu |
sci4u.biz |
ics4u.eu |
sci4u.org |
sci4u.com |
sci4u.us |
sci4u.ru |
ics4u.com |
isc4u.net |
i4cus.co |
sci4u.de |
i4cus.tech |
sci4u.net |
i4cus.com |
isc4u.co.uk |
sci4u.info |
DNS History
8 records (6 active, 2 former)
○A108.175.13.982015-08-07 → 2016-09-15 · 4 obs
● 2016-09-15 12:16:10
○ 2017-07-17 18:09:56
○ 2026-03-25 01:31:40
○A2607:f1c0:1000:c04e:e561:353e:401d:18392015-08-07 → 2016-09-15 · 4 obs
● 2016-09-15 12:16:10
○ 2017-07-17 18:09:56
○ 2026-03-25 01:31:40
●A2607:f1c0:100f:f000::2e22017-07-17 → 2026-03-25 · 3 obs
● 2017-07-17 18:09:56
● 2026-03-25 01:31:40
●A74.208.236.1672017-07-17 → 2026-03-25 · 3 obs
● 2017-07-17 18:09:56
● 2026-03-25 01:31:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, d.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net... | - |
| csi4u.com | ns57.1and1.com, ns58.1and1.com | 4 records |
✅ Authoritative Response
Server:217.160.82.32
NS records: ns57.1and1.com, ns58.1and1.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for csi4u.com (unsigned zone)
⏱️ Timing
Total: 240ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 74.208.236.167 |
| AAAA | 1 | 2607:f1c0:100f:f000::2e2 |
| NS | 2 | ns58.1and1.com, ns57.1and1.com |
| MX | 2 | mx00.1and1.com (pri: 10), mx01.1and1.com (pri: 10) |
| TXT | 1 | v=spf1 include:_spf-us.ionos.com ~all |
| SOA | 1 | ns57.1and1.com hostmaster.1and1.com |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns57.1and1.com, ns57.1and1.com, ns58.1and1.com...)
Analysis
Hierarchy
The parent of www.csi4u.com is csi4u.com.
IP Addresses
csi4u.com resolves to two IP numbers: 2607:f1c0:100f:f000::2e2 and 74.208.236.167.
Other host names, for instance weatherlyimages.com, bodark.net, crowddiet.com, coilreplacements.com and planetbazaar.com share IP numbers with csi4u.com.
Name Servers
Two name servers ns57.1and1.com and ns58.1and1.com handle delegation for csi4u.com.
csi4u.com uses the same name server setup as other domains, for example whitekingandthedoctor.com, isdt.com, telcoman.com, avenuebroadband.com and teamcrazy88.com.
csi4u.com partially shares name servers with other domains; examples include jem-elec.com, massp.org, globalfluency.biz, ilan.com and pocosin.com.
These name servers are often used with ns1045.ui-dns.biz, ns1045.ui-dns.com, ns1045.ui-dns.de, ns1045.ui-dns.org, ns-us.1and1-dns.com, ns-us.1and1-dns.de, ns-us.1and1-dns.org and ns-us.1and1-dns.us.
Host names with two IP numbers:
ns57.1and1.com points to: 2001:8d8:fe:53:0:d9a0:5220:100 and 217.160.82.32
ns58.1and1.com points to: 2001:8d8:fe:53:0:d9a0:531f:100 and 217.160.83.31
Mail Servers
csi4u.com is handled by two mail servers: mx00.1and1.com and mx01.1and1.com.
csi4u.com has the same mail server setup as other domains, including kubco.net, amvn.qc.ca, mediamix.com, kennethpoole.com and fanshares.com.
csi4u.com shares some mail servers with other domains, at least partially, such as webmail.800466life.com, mail.podotech.net, u16895862.onlinehome-server.com, u20293437.onlinehome-server.com and garagestoragemilwaukee.com.
Host names with one IP number: The host name mx00.1and1.com points to 74.208.5.3 and the host name mx01.1and1.com points to 74.208.5.21.