activate.comcast.com

comcast.com

Comcast Corporation

Comcast Corporation is one of the largest telecommunications and media conglomerates in the United States. Founded in 1963 in Tupelo, Mississippi, it has grown into a global company headquartered in Philadelphia, Pennsylvania. The company operates primarily through its Xfinity brand for consumer services and NBCUniversal for media and entertainment.

Key Services

• Internet: High-speed broadband through Xfinity, one of the largest ISPs in the US
• Television: Cable TV and streaming services including Peacock
• Phone: VoIP and mobile phone services
• Business Services: Enterprise networking, data centers, and managed services
• Media & Entertainment: NBCUniversal studios, theme parks, and broadcast networks

Technical Infrastructure

The domain operates its own authoritative DNS infrastructure with five nameservers (dns101-105.comcast.net), all hosted on Comcast's backbone network with full IPv4 and IPv6 support. Email is handled through Proofpoint's cloud security platform (pphosted.com). The domain is DNSSEC-signed and maintains extensive TXT records for third-party service verification including AWS, Google, Docker, and Adobe integrations.

Network

The primary domain resolves to Comcast's IBONE (Internet Backbone) network. As one of the largest Tier 1 network operators, Comcast operates AS7922 (COMCAST-7922) which is one of the most significant autonomous systems in the global internet routing table.

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