it-optics.com SPF record

10 / 10 Lookups
1 Issue
458,771 IPv4 addresses
2.19 ⋅ 10 24 IPv6 addresses

The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.

v=spf1 mx a ptr ip4:178.32.77.76 ip4:178.32.77.78 ip4:178.32.77.79 ip4:178.32.77.77 ip4:51.255.198.17 ip4:51.255.43.52 ip4:213.211.178.73 a:bigserver.it-optics.com include:spf.xeolis.com include:spf.protection.outlook.com -all Copied

Terms

mx
pass if the sender's IP address is in the A or AAAA record of this domain.
4 IPv4 addresses
4 IPv6 addresses
or else
a
pass if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
ptr:
PTR checks should no longer be used. See RFC 7208, section 5.5 .
or else
ip4:
178.32.77.76 / 32
pass if the sender's IP is between
178.32.77.76 and 178.32.77.76 (inclusive).
OVH
AS16276
or else
ip4:
178.32.77.78 / 32
pass if the sender's IP is between
178.32.77.78 and 178.32.77.78 (inclusive).
OVH
AS16276
or else
ip4:
178.32.77.79 / 32
pass if the sender's IP is between
178.32.77.79 and 178.32.77.79 (inclusive).
OVH
AS16276
or else
ip4:
178.32.77.77 / 32
pass if the sender's IP is between
178.32.77.77 and 178.32.77.77 (inclusive).
OVH
AS16276
or else
ip4:
51.255.198.17 / 32
pass if the sender's IP is between
51.255.198.17 and 51.255.198.17 (inclusive).
OVH
AS16276
or else
ip4:
51.255.43.52 / 32
pass if the sender's IP is between
51.255.43.52 and 51.255.43.52 (inclusive).
OVH
AS16276
or else
ip4:
213.211.178.73 / 32
pass if the sender's IP is between
213.211.178.73 and 213.211.178.73 (inclusive).
EDPNETapp
AS9031
or else
a:
bigserver.it-optics.com
pass if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
include:
spf.xeolis.com
Evaluate this SPF record and pass if it
passes.
or else
include:
spf.protection.outlook.com
Evaluate this SPF record and pass if it
passes.
Microsoft 365 / Outlook
Inbox software
or else
-all
fail the email's SPF check.

Included records

v=spf1 mx a ptr ip4:178.32.77.76 ip4:178.32.77.78 ip4:178.32.77.79 ip4:178.32.77.77 ip4:51.255.198.17 ip4:51.255.43.52 ip4:213.211.178.73 a:bigserver.it-optics.com include:spf.xeolis.com include:spf.protection.outlook.com -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
a mx a:zimbra.it-optics.com a:mail.xeolis.com 3 x ip4 -all
6 x ip4 5 x ip6 -all

IP ranges

52.101.73.8
Microsoft
AS8075
52.101.73.12
Microsoft
AS8075
52.101.73.19
Microsoft
AS8075
52.101.73.24
Microsoft
AS8075
2a01:111:f403:ca09::2
Microsoft
AS8075
2a01:111:f403:ca04::10
Microsoft
AS8075
2a01:111:f403:ca04::e
Microsoft
AS8075
2a01:111:f403:ca09::1
Microsoft
AS8075
178.32.40.191
OVH
AS16276
178.32.77.76
OVH
AS16276
178.32.77.78
OVH
AS16276
178.32.77.79
OVH
AS16276
178.32.77.77
OVH
AS16276
51.255.198.17
OVH
AS16276
51.255.43.52
OVH
AS16276
213.211.178.73
EDPNETapp
AS9031
91.183.38.102
Proximus NV
AS5432
178.32.40.191
OVH
AS16276
172.29.254.246
Reserved IP
Private-Use [1]
178.32.40.191
OVH
AS16276
46.4.99.70
Hetzner Online
AS24940
46.4.99.71
Hetzner Online
AS24940
51.75.72.149
OVH
AS16276
40.92.0.0 / 15
Microsoft
AS8075
40.107.0.0 / 16
Microsoft
AS8075
52.100.0.0 / 15
Microsoft
AS8075
52.102.0.0 / 16
Microsoft
AS8075
52.103.0.0 / 17
Microsoft
AS8075
104.47.0.0 / 17
Microsoft
AS8075
2a01:111:f400:: / 48
Microsoft
AS8075
2a01:111:f403:: / 49
Microsoft
AS8075
2a01:111:f403:8000:: / 51
Microsoft
AS8075
2a01:111:f403:c000:: / 51
Microsoft
AS8075
2a01:111:f403:f000:: / 52
Microsoft
AS8075