sifware.com - robtex.com
sifware.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 159.182.72.18🇺🇸 PEARSON-EMEA159.182.72.0/21 NCS Pearson Inc. | ||||||
| PTR | lo1.park.global.pearson.com | ||||||
| NS | dns-amer-2.ptns.pearson.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 159.182.12.40🇺🇸 PEARSON-NA159.182.12.0/24 NCS Pearson Inc. | ||||||
| PTR | dns-amer-2.ptns.pearson.com | ||||||
| NS | dns-apac-1.ptns.pearson.com ⚠️ Not in parent delegation | ||||||
| A | 159.182.67.40🇺🇸 PEARSON-APAC159.182.67.0/24 Pearson Group | ||||||
| PTR | dns-apac-1.ptns.pearson.com | ||||||
| NS | dns-emea-1.ptns.pearson.com ⚠️ Not in parent delegation | ||||||
| A | 159.182.79.40🇺🇸 PEARSON-EMEA159.182.79.0/24 Pearson Group | ||||||
| PTR | dns-emea-1.ptns.pearson.com | ||||||
| NS | ns1.pearson.com ⚠️ Not in zone NS records | ||||||
| A | 168.146.112.10🇺🇸 PEARSON-NA168.146.112.0/24 NCS Pearson Inc. | ||||||
| PTR | ns1.pearson.com | ||||||
| NS | ns2.pearson.com ⚠️ Not in zone NS records | ||||||
| A | 168.146.112.11🇺🇸 PEARSON-NA168.146.112.0/24 NCS Pearson Inc. | ||||||
| PTR | ns2.pearson.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | dns-amer-2.ptns.pearson.comgns-dnsoperations@pearson.com serial=7 | ||||||
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=1771291435 | ||||||
Same first word
sifware.com |
Similar names
swefair.com |
wasfrei.de |
wesfair.com |
fairsew.com |
sewafri.com |
fewsari.com |
wirefas.com |
farwise.com |
swarife.com |
rafwise.com |
faswire.com |
swefair.biz |
siwafer.com |
swefair.se |
DNS History
12 records (6 active, 6 former)
●NSdns-amer-2.ptns.pearson.com2026-02-21 → 2026-03-14 · 3 obs
● 2026-02-21 05:06:28
● 2026-03-14 11:11:10
●NSdns-apac-1.ptns.pearson.com2026-02-21 → 2026-03-14 · 3 obs
● 2026-02-21 05:06:28
● 2026-03-14 11:11:10
●NSdns-emea-1.ptns.pearson.com2026-02-21 → 2026-03-14 · 3 obs
● 2026-02-21 05:06:28
● 2026-03-14 11:11:10
○NSdns1.cscdns.net2015-06-05 → 2017-01-21 · 4 obs
● 2017-01-21 17:37:16
○ 2026-02-21 05:06:28
○ 2026-03-14 11:11:10
○NSdns2.cscdns.net2015-06-05 → 2017-01-21 · 4 obs
● 2017-01-21 17:37:16
○ 2026-02-21 05:06:28
○ 2026-03-14 11:11:10
●NSns1.pearson.com2026-02-21 → 2026-03-14 · 3 obs
● 2026-02-21 05:06:28
● 2026-03-14 11:11:10
●NSns2.pearson.com2026-02-21 → 2026-03-14 · 3 obs
● 2026-02-21 05:06:28
● 2026-03-14 11:11:10
○MXcustmx.cscdns.net2015-06-05 → 2017-01-21 · 4 obs
● 2017-01-21 17:37:16
○ 2026-02-21 05:06:28
○ 2026-03-14 11:11:10
●A159.182.72.182026-02-21 → 2026-03-14 · 5 obs
● 2026-02-21 05:06:28
○ 2026-03-14 01:59:20
● 2026-03-14 11:11:08
● 2026-03-14 11:11:10
○A165.160.13.202015-06-05 → 2017-01-21 · 4 obs
● 2017-01-21 17:37:16
○ 2026-02-21 05:06:28
○ 2026-03-14 11:11:10
○A165.160.15.202015-06-05 → 2017-01-21 · 4 obs
● 2017-01-21 17:37:16
○ 2026-02-21 05:06:28
○ 2026-03-14 11:11:10
○A168.146.68.332026-03-14 → 2026-03-14 · 4 obs
● 2026-03-14 01:59:20
○ 2026-03-14 11:11:08
○ 2026-03-14 11:11:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net, b.gtld-servers.net... | - |
| sifware.com | ns2.pearson.com, ns1.pearson.com | 2 records |
✅ Authoritative Response
Server: 168.146.112.11
NS records: ns2.pearson.com, ns1.pearson.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sifware.com (unsigned zone)
⏱️ Timing
Total: 305ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 159.182.72.18 |
| NS | 3 | dns-apac-1.ptns.pearson.com, dns-amer-2.ptns.pearson.com... |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | dns-amer-2.ptns.pearson.com gns-dnsopera |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.pearson.com, ns1.pearson.com)
Analysis
IP Addresses
sifware.com points to a single IP number: 159.182.72.18.
Other host names, for instance pearsonstudium.ch, mymachinetoolkit.info, myitlabgrader.com, dominie.com and cti.co.za share IP numbers with sifware.com.
Name Servers
sifware.com is delegated to five name servers: ns1.pearson.com, ns2.pearson.com, dns-amer-2.ptns.pearson.com, dns-apac-1.ptns.pearson.com and dns-emea-1.ptns.pearson.com.
sifware.com shares name servers with other domains at least partially, for instance scienceinaction7.com, onlinegwu.com, companionsites.co.uk, pearsonelt.ca and greatriverconnectionsacademy.com.
Host names with one IP number:
ns1.pearson.com points to 168.146.112.10
ns2.pearson.com points to 168.146.112.11
dns-amer-2.ptns.pearson.com points to 159.182.12.40
dns-apac-1.ptns.pearson.com points to 159.182.67.40
dns-emea-1.ptns.pearson.com points to 159.182.79.40