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Is this a valid IP Address?
For each IP, you can select whether it's invalid, private, public or special.
"Private" means the usual big blocks, no /24 documantation subnet or anything like that
"Special" means valid and specifically mentioned in an RFC as being "for something" (like CG-NAT, loopback, classes D & E etc.)
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Last updated: August 19, 2022
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| First submitted | August 19, 2022 |
| Times taken | 65 |
| Average score | 41.2% | Report this quiz | Report |
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1. 192.168.178.1
Class C private network
Private
Public
Special
Invalid
2. 0.0.0.0
If a host doesnt have an IP, it uses this as a source IP
Private
Public
Special
Invalid
3. 254.0.0.1
Reserved (for when?)
Private
Public
Special
Invalid
4. 19.68.33.129
Private
Public
Special
Invalid
5. 169.254.16.5
Zeroconf / APIPA. Usually known as the "your DHCP doesn't work"-address
Private
Public
Special
Invalid
6. 127.128.129.130
Loopback is 127.0.0.0/8
Private
Public
Special
Invalid
7. 170.162.108
Only three octets. When pinged usually translates to 170.182.0.108
Private
Public
Special
Invalid
8. 172.19.97.2
Class B private network
Private
Public
Special
Invalid
9. 55.73.96.31
Private
Public
Special
Invalid
10. 12.0.256.87
The third octet is too high (>255)
Private
Public
Special
Invalid
11. 192.5.99.2
Private
Public
Special
Invalid
12. 172.50.8.32
Private
Public
Special
Invalid
13. 82.63.361.2
The third octet is too high (>255)
Private
Public
Special
Invalid
14. 10.10.10.10
Class A private network
Private
Public
Special
Invalid
15. 255.255.255.255
Broadcast-address
Private
Public
Special
Invalid
16. 10.5.9.15.0
Too many octets
Private
Public
Special
Invalid
17. 1.1.1.1
Private
Public
Special
Invalid
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