172.27.27.1 router login
To open the admin panel, type 172.27.27.1 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.
172.27.27.1 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 login is recorded for 172.27.27.1. Segments built in this part of the 172 block are usually assembled deliberately, for a lab, a tunnel or a virtual network, and the credentials for such a device are set at provisioning rather than inherited from a factory sticker.
Check the physical label and the model's manual if this is a hardware appliance. If it is a virtual router, a container gateway or a VPN endpoint, the answer is more likely in the configuration file, provisioning script or infrastructure repository that created it, or in the notes kept by whoever built the environment.
How to log in to your router
Type 172.27.27.1 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 172.27.27.1, 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
For a gateway on a purpose-built segment, a reset erases exactly the work that made the segment useful: tunnel definitions, pre-shared keys or certificates, routing entries, address assignments and firewall rules. Remote peers will stop connecting until the configuration is rebuilt on both ends.
Before doing that, check whether the configuration exists elsewhere. Environments in this range are often defined in code or in a saved configuration file, which makes rebuilding far cheaper than it looks. If a reset is still required, export a backup and follow the recovery procedure documented for that platform; no vendor is known to ship this address, so no specific method applies.
172.27.27.1 falls inside 172.16.0.0/12, the middle private range, which covers 1,048,576 addresses from 172.16.0.0 to 172.31.255.255 under a 255.240.0.0 netmask. It is favoured in mid-size business networks, lab environments, VPN subnets and Docker default bridge networks. It also trips people up, because 172.x.x.x addresses outside the 172.16 to 172.31 span are public internet space rather than private.
The subnet here is 172.27.27.0/24, with usable hosts from 172.27.27.1 to 172.27.27.254 and broadcast at 172.27.27.255. Repeated-octet subnets like this one are frequently chosen on purpose: they are easy to remember and, more practically, unlikely to collide with the networks of remote sites or VPN peers, which is precisely why this part of the 172 block is popular for tunnels and lab builds. The address occupies host position 1, the customary place for a segment's router or tunnel endpoint.
Only four other addresses in this /24 are documented here, in keeping with a small or purpose-built segment. Visitors typically arrive after seeing it as a gateway or as a tunnel's far end and want to reach its administrative interface.
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.