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About Comcast

Comcast Cable Communications, operating as Xfinity, provides cable television, high-speed internet, voice telephony, and wireless services primarily to residential customers, with additional business services under Comcast Business. It serves customers in 40 states and the District of Columbia, holding 2 state-level OCNs and originating 24,236 thousand-number blocks. Comcast is the largest US cable internet provider and third-largest home telephone provider.

Sources: Comcast - Wikipedia · Xfinity - Wikipedia · Company · Comcast Corporation [PDF]

Toll-free side: Comcast also operates as a toll-free RespOrg (code JTN01). View on resporgs.com →

Headquarters: Philadelphia, PA

From Comcast IP Phone LLC (OCN 318J), the largest member of the Comcast group.

Street view of Comcast HQ
Street view
Satellite view of Comcast HQ
Satellite

Carrier website

Homepage screenshot of Comcast comcast.com: opens in a new tab

Block portfolio at a glance

By age

Recent: 160Medium: 388Old: 21,380Undated: 2,30824,236blocks
  • Recent (160). Last 18 mo
  • Medium (388)
  • Old (21,380)
  • Undated (2,308)

Footprint by state

Stronger blue = more blocks issued in that state. ● marks states with activity in the last 18 months.

Hawaii (HI): 2 blocksAlaska (AK): 2 blocksFlorida (FL): 1,827 blocks: 16 recentSouth Carolina (SC): 125 blocksGeorgia (GA): 1,006 blocks: 9 recentAlabama (AL): 154 blocks: 7 recentNorth Carolina (NC): 14 blocksTennessee (TN): 623 blocks: 1 recentRhode Island (RI): 251 blocksConnecticut (CT): 458 blocks: 2 recentMassachusetts (MA): 1,287 blocksMaine (ME): 36 blocks: 1 recentNew Hampshire (NH): 324 blocks: 6 recentVermont (VT): 167 blocks: 1 recentNew York (NY): 41 blocksNew Jersey (NJ): 979 blocks: 1 recentPennsylvania (PA): 1,877 blocks: 27 recentDelaware (DE): 189 blocksMaryland (MD): 949 blocks: 3 recentWest Virginia (WV): 135 blocks: 2 recentKentucky (KY): 51 blocksOhio (OH): 107 blocksMichigan (MI): 1,082 blocks: 1 recentWyoming (WY): 2 blocksMontana (MT): 4 blocksIdaho (ID): 10 blocksWashington (WA): 790 blocks: 2 recentTexas (TX): 844 blocks: 3 recentCalifornia (CA): 2,331 blocks: 7 recentArizona (AZ): 825 blocksNevada (NV): 438 blocksUtah (UT): 230 blocks: 2 recentColorado (CO): 618 blocksNew Mexico (NM): 141 blocksOregon (OR): 364 blocksNorth Dakota (ND): 4 blocksSouth Dakota (SD): 2 blocksNebraska (NE): 237 blocksIowa (IA): 35 blocks: 1 recentMississippi (MS): 168 blocks: 2 recentIndiana (IN): 733 blocks: 16 recentIllinois (IL): 1,344 blocks: 13 recentMinnesota (MN): 298 blocksWisconsin (WI): 25 blocks: 4 recentMissouri (MO): 66 blocks: 12 recentArkansas (AR): 253 blocks: 9 recentOklahoma (OK): 685 blocks: 8 recentKansas (KS): 357 blocksLouisiana (LA): 566 blocks: 2 recentVirginia (VA): 1,085 blocks: 2 recentDistrict of Columbia (DC): 92 blocks

Top area codes

Bars show total blocks; red overlay is recent.

405381443369702343717331603324 / 6480301720294619286267281540277 / 1240275860272

Block assignments by year

98
00
01
02
03
04
05
2337 06
2134 07
08
09
10
11
12
13
1690 14
15
16
17
18
19
20
21
22
23
24
25
26

Best vanity numbers from Comcast's recent issuances

Numbers in blocks issued in the last 18 months whose digits spell a useful word. Filter by state and category to find one for your business. ★ marks Mike's curated standouts.

NumberSpellsCategoryStateBlock issued
(660) 463-6762 ★ INFORMATION VAN MO 2024-12-04
(835) 227-4825 ★ CAPITAL Financial / Banking / Investing PA 2025-06-05
(272) 776-3828 ★ PRODUCTS Retail Stores PA 2026-03-19
(385) 627-7243 ★ MASSAGE Massage / Acupuncture UT 2026-02-17
(385) 627-5384 ★ MARKETING Advertising UT 2026-02-17
(272) 244-2246 ★ CHICAGO Geography / Local / Directions PA 2025-04-10
(501) 427-3927 ★ HARDWARE Computer / Hardware AR 2025-07-14
(920) 773-6437 ★ PREMIER Superlatives / Positive Adjectives WI 2025-12-08
(385) 627-6679 ★ MASONRY Building / Construction / Contractor UT 2026-02-17
(501) 427-3367 ★ GARDENS Outdoor / Camping / Landscaping AR 2025-07-14
(385) 627-8377 ★ MASTERS Superlatives / Positive Adjectives UT 2026-02-17
(272) 327-6377 ★ FARMERS Farming / Agriculture / Veterinary PA 2026-03-19
(272) 244-2536 ★ CHICKEN Supermarkets / Deli / Groceries PA 2025-04-10
(272) 776-3377 ★ PROFESSIONAL General PA 2026-03-19
(920) 773-6237 ★ SPENCER Names / Nicknames WI 2025-12-08
(352) 676-2636 ★ ORNAMENTS General FL 2025-06-13
(447) 265-3626 ★ COLEMAN Names / Nicknames IL 2025-12-03
(835) 227-4246 ★ BARGAIN Discount / Price PA 2025-06-05
(539) 355-4688 ★ ELLIOTT Names / Nicknames OK 2025-06-11
(272) 244-2738 ★ CIGARETTE Marijuana / Smoking / Vaping PA 2025-04-10
(661) 668-3589 ★ NOVELTY Shopping / Gifts / Novelties CA 2025-02-06
(385) 627-4596 ★ MARILYN Names / Nicknames UT 2026-02-17
(447) 766-2623 ★ ROMANCE Dating / Personals / Singles IL 2026-03-27
(835) 227-4667 ★ CASINOS Gambling / Casino / Slots PA 2025-06-05
(385) 627-8379 ★ MASTERY Motivational / Self Help / Winning UT 2026-02-17
(661) 668-3266 ★ NOTEBOOKS Books / Library / Writing CA 2025-02-06
(272) 776-3487 ★ PROFITS Financial / Banking / Investing PA 2026-03-19
(385) 627-5467 ★ NAPKINS Kitchen / Appliances / Cabinets UT 2026-02-17
(385) 627-5377 ★ MARKERS Printing / Markers / Pens UT 2026-02-17
(272) 327-6464 ★ FARMING Farming / Agriculture / Veterinary PA 2026-03-19

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Member OCNs

2 OCNs roll up under Comcast.

OCNCompany name on fileHQTypeTotalRecent
318J Comcast IP Phone LLC Philadelphia, PA IP-Enabled Service / VoIP 24,231 160
8625 Comcast Phone of Texas LLC - TX Basking Ridge, NJ Competitive Local Exchange Carrier 5 ·