Best Bulgaria Proxies 2026: A1 BG, Vivacom, Yettel BG Mobile IPs

Bulgaria sits in an interesting spot for proxy buyers: EU jurisdiction, three solid mobile carriers, and IP reputation that stays cleaner than most Eastern European pools because demand from scrapers is still relatively low. If you need Bulgarian mobile proxies in 2026, the carrier you pick matters more than the provider name on the reseller’s checkout page.

Bulgaria’s Mobile Carrier Landscape

Three operators dominate Bulgarian mobile traffic:

A1 Bulgaria (formerly Mobiltel) — largest network by subscriber count, strong 4G/LTE coverage across Sofia and second-tier cities
Vivacom — national telco with the densest fiber+mobile footprint outside Sofia, owned by United Group
Yettel BG — rebranded from Telenor in 2022, mid-tier coverage with competitive data plans

Each carrier assigns different ASN blocks. For scraping, this matters because some targets block entire ASN ranges. Rotating across all three carriers gives you redundancy that a single-carrier pool cannot.

Carrier	ASN	IPv4 Range Type	Typical Trust Score
A1 Bulgaria	AS8866	Dynamic CGNAT	High
Vivacom	AS34224	Dynamic + some static	High
Yettel BG	AS43205	Dynamic CGNAT	Medium-High
Sofia residential ISPs	AS8717, AS31083	Static DSL/cable	Medium

Mobile (CGNAT) IPs consistently score higher on trust metrics than residential or datacenter ranges. If you are hitting platforms like Instagram, LinkedIn, or Google Shopping, mobile is the only tier worth paying for.

What Makes Bulgarian IPs Useful in 2026

Bulgaria’s EU membership is the key technical advantage. Most major platforms treat .bg traffic identically to .de or .fr traffic at the routing layer. You get EU geo-targeting without the premium that German or French IPs carry.

Practical use cases where Bulgarian mobile proxies perform well:

EU e-commerce price intelligence (Emag.bg, Kaufland.bg, local Lidl/Lidl-adjacent retailers)
Google SERP scraping with Bulgarian locale (gl=bg&hl=bg)
Social media account management requiring a consistent EU mobile fingerprint
Ad verification for campaigns targeting Eastern Europe

For comparison, if you are building a Balkan-wide data pipeline, you will likely pair Bulgarian IPs with Serbian mobile proxies from Telekom Srbija, Yettel, and A1 and Croatian mobile proxies from HT, A1, and Telemach to cover the full Western Balkans footprint.

Choosing a Provider: What to Verify Before Buying

Most proxy vendors selling “Bulgarian mobile IPs” are reselling the same upstream pools. Before committing to a plan, run these checks:

import httpx

proxies = {
    "http://": "http://user:pass@bg-proxy-host:port",
    "https://": "http://user:pass@bg-proxy-host:port",
}

r = httpx.get("https://ipinfo.io/json", proxies=proxies, timeout=10)
data = r.json()

assert data.get("country") == "BG", "Not a Bulgarian IP"
assert data.get("org", "").startswith("AS8866") or \
       data.get("org", "").startswith("AS34224") or \
       data.get("org", "").startswith("AS43205"), \
       f"Unknown ASN: {data.get('org')}"

print(f"IP: {data['ip']} | Carrier: {data['org']} | City: {data.get('city')}")

Run this 10-15 times on rotation. If you keep getting the same /24 subnet, the pool is small and you will burn IPs fast on any volume target. A healthy mobile pool should scatter across at least 3-5 distinct /24 blocks per 15 rotations.

Key questions to ask any provider before purchasing:

What is the total IP pool size for BG mobile specifically (not “Balkan” or “EU”)?
Do they expose carrier-level filtering (A1 only, Vivacom only)?
What is the rotation mechanism: time-based, request-based, or endpoint-triggered?
Do they offer sticky sessions (same IP for 1-10 minutes) alongside rotating?

Providers worth evaluating for Bulgarian coverage in 2026 include Bright Data, Oxylabs, Infatica, and NetNut. Smaller operators like IPRoyal and Proxy-Cheap have improved their BG mobile pools noticeably over the past year. For Hungarian mobile proxies covering Magyar Telekom and Vodafone HU the same provider tier applies since the underlying network architecture is comparable.

Rotation Config and Session Management

For most scraping workloads, a gateway rotation endpoint (rotate on each connection) is the right default. Sticky sessions matter when you need to maintain state across multiple requests, for example a login flow or a multi-page checkout scrape.

A typical Scrapy middleware config for Bulgarian mobile rotation:

DOWNLOADER_MIDDLEWARES = {
    "scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware": 750,
}

ROTATING_PROXY_LIST = [
    "http://user:pass@bg-gateway.provider.com:10000",
]

# Force new IP every N requests
ROTATING_PROXY_PAGE_RETRY_TIMES = 5

If your provider exposes a REST rotation endpoint, call it explicitly after each session rather than relying on time-based rotation. This is especially important on A1 BG CGNAT pools where multiple users share the same exit IP during peak hours. Forcing a rotation after each account interaction keeps your session fingerprint clean.

For reference on how providers structure rotation endpoints across similar Eastern European networks, the Slovak Telekom and O2 SK proxy guide covers the same rotation patterns in detail.

Pricing and Pool Quality Reality Check

Bulgarian mobile proxies sit in the mid-range pricing tier. Expect:

Plan Type	Typical Price	Notes
Residential BG (ISP)	$3-6 / GB	Mixed static/dynamic, not true mobile
Mobile BG rotating	$8-15 / GB	A1/Vivacom/Yettel mix
Mobile BG sticky 10min	$12-20 / GB	Higher cost for session continuity
Dedicated BG mobile	$80-150 / mo	Single device, full control

The gap between “residential” and “mobile” matters. Many vendors label DSL or cable IPs as residential and mobile interchangeably. Always verify ASN. If it is not AS8866, AS34224, or AS43205, you are not on a Bulgarian mobile carrier.

For high-volume projects that need broader coverage than any single Eastern European country, the Russian mobile proxy provider comparison covers a structurally similar market with larger pool sizes if your geo-target is flexible.

Bottom Line

For EU-jurisdictioned mobile IPs with solid trust scores and lower saturation than Western European pools, Bulgarian mobile proxies deliver good value in 2026. Prioritize A1 BG (AS8866) and Vivacom (AS34224) coverage, verify ASNs before buying, and treat any provider that cannot confirm carrier-level filtering as a red flag. DRT covers carrier-level proxy selection across all major European markets if you are building a multi-country data pipeline.