172.27.27.3 router login
To open the admin panel, type 172.27.27.3 into your browser's address bar. If the page does not load, this is probably not the gateway address on your network — see the checks below.
172.27.27.3 router passwords
Where to find them:
- The label on the underside or back of the router — most manufacturers print the default admin username, password and Wi-Fi key there.
- The quick-start card or manual that came in the box.
- Your ISP's account portal, if the device was supplied by them — many set a unique password per line rather than a shared default.
No default username and password pair is documented for 172.27.27.3, and none should be assumed. A private address carries no credentials of its own; whatever sign-in prompt appears belongs to a particular device, and its defaults are set by that device's maker rather than by the address.
The reliable sources are the label printed on the equipment itself, which commonly carries the default account, password or PIN, the manual or support page for that exact model, and, on ISP-supplied hardware, the provider's own documentation. If the device is already in service, the credentials have often been changed from the factory values, in which case only the current administrator can supply them.
How to log in to your router
Type 172.27.27.3 into your browser's address bar and press Enter. Type it by hand rather than accepting an autocomplete suggestion, which often fills in a different address you visited before.
If the browser reports that it cannot reach 172.27.27.3, this is not the gateway address on your network. On Windows run ipconfig /all and read the Default Gateway line; on macOS open System Settings, Network, Details, TCP/IP; on Linux run ip route and read the address after "default via".
If the login page loads but rejects your credentials, and you have never changed them, use the defaults printed on the device's label. If they have been changed and nobody knows the new password, a factory reset is the only way back in.
If you do not know the password
If the login is unknown, first confirm what answers on 172.27.27.3. Checking the DHCP client list or connected-device table on your network usually names the model, which then points to the correct documentation. Trying credential lists collected for unrelated hardware tends to trigger lockouts rather than access.
A factory reset, typically a recessed button held for roughly ten to thirty seconds while powered on, is the last resort. It restores the documented defaults but also erases the current configuration: wireless names and passphrases, static addresses such as this one, port forwarding, VLANs and firewall rules. Record the settings you can still read, and confirm the reset procedure in the model's own manual before starting.
172.27.27.3 is a private IPv4 address inside 172.16.0.0/12, the mid-size block that RFC 1918 sets aside for internal use. That block runs from 172.16.0.0 to 172.31.255.255, carries a netmask of 255.240.0.0 and holds 1,048,576 addresses. It is the block most often confused with public space, because the rest of 172.x.x.x outside the 172.16 to 172.31 window is ordinary routable internet address space. Nothing about 172.27.27.3 identifies a company, a country or a network operator: private addresses are unallocated and are reused independently on countless separate networks.
Within its own network the address sits in the 172.27.27.0/24 subnet, whose usable hosts run from 172.27.27.1 to 172.27.27.254, with 172.27.27.255 reserved as the broadcast address. Position 3 in a /24 is not one of the conventional gateway slots, which tend to be the first or last usable address, so on many networks an address here belongs to a server, an access point, a controller, a printer or another fixed-IP device rather than the router itself. The 172.16.0.0/12 range turns up frequently in mid-size business LANs, lab and test networks, VPN subnets and Docker default bridge networks.
Most people arriving here are trying to open a login page at http://172.27.27.3 or work out what device answers on it.
Whois information for 172.16.0.0/12
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2024, American Registry for Internet Numbers, Ltd.
#
NetRange: 172.16.0.0 - 172.31.255.255
CIDR: 172.16.0.0/12
NetName: PRIVATE-ADDRESS-BBLK-RFC1918-IANA-RESERVED
NetHandle: NET-172-16-0-0-1
Parent: ()
NetType: IANA Special Use
OriginAS:
Organization: Internet Assigned Numbers Authority (IANA)
RegDate: 1994-03-15
Updated: 2013-08-30
Comment: These addresses are in use by many millions of independently operated networks, which might be as small as a single computer connected to a home gateway, and are automatically configured in hundreds of millions of devices. They are only intended for use within a private context and traffic that needs to cross the Internet will need to use a different, unique address.
Comment:
Comment: These addresses can be used by anyone without any need to coordinate with IANA or an Internet registry. The traffic from these addresses does not come from ICANN or IANA. We are not the source of activity you may see on logs or in e-mail records. Please refer to http://www.iana.org/abuse/answers
Comment:
Comment: These addresses were assigned by the IETF, the organization that develops Internet protocols, in the Best Current Practice document, RFC 1918 which can be found at:
Comment: http://datatracker.ietf.org/doc/rfc1918
Ref: https://rdap.arin.net/registry/ip/172.16.0.0
OrgName: Internet Assigned Numbers Authority
OrgId: IANA
Address: 12025 Waterfront Drive
Address: Suite 300
City: Los Angeles
StateProv: CA
PostalCode: 90094
Country: US
RegDate:
Updated: 2012-08-31
Ref: https://rdap.arin.net/registry/entity/IANA
OrgAbuseHandle: IANA-IP-ARIN
OrgAbuseName: ICANN
OrgAbusePhone: +1-310-301-5820
OrgAbuseEmail: abuse@iana.org
OrgAbuseRef: https://rdap.arin.net/registry/entity/IANA-IP-ARIN
OrgTechHandle: IANA-IP-ARIN
OrgTechName: ICANN
OrgTechPhone: +1-310-301-5820
OrgTechEmail: abuse@iana.org
OrgTechRef: https://rdap.arin.net/registry/entity/IANA-IP-ARIN
Other documented addresses in 172.27.27.0/24
The 172.27.27.0/24 subnet runs from 172.27.27.1 to 172.27.27.254, with 172.27.27.255 reserved as the broadcast address. These are the addresses in it we hold router login details for.
All addresses we cover here
5 addresses in this subnet have a page; the most looked-up are listed here.