Country stats for last year of data

For these country-level stats, the most recent test from each client address is examined within aggregated IP blocks (/24 for IPv4 and /40 for IPv6). If the most recent test in an IP block shows spoofing, the IP block is considered to allow spoofing. If ALL clients indicate blocking, the IP block is considered to block spoofing. (It is considered NAT blocking if there are no non-NAT tests found.) If some clients showed spoofing but the most recent tests show blocking (and there's no evidence of a change in blocking policy), then the IP block is considered "inconsistent". On the map, inconsistent results are counted as spoofing for simplicity.

Country	Client IP blocks	Spoofing IP blocks	Blocking IP blocks		Inconsistent IP blocks	Client ASNs	Spoofing ASNs
			Non-NAT	NAT
bra (Brazil)	2490	350 (14.1%)	509 (20.4%)	1605 (64.5%)	26 (1.0%)	586	213 (36.3%)
usa (United States)	1663	97 (5.8%)	506 (30.4%)	1056 (63.5%)	4 (0.2%)	347	67 (19.3%)
ind (India)	447	65 (14.5%)	36 (8.1%)	344 (77.0%)	2 (0.4%)	43	14 (32.6%)
egy (Egypt)	206	61 (29.6%)	0 (0.0%)	145 (70.4%)	0 (0.0%)	5	1 (20.0%)
rus (Russian Federation)	692	45 (6.5%)	55 (7.9%)	592 (85.5%)	0 (0.0%)	140	22 (15.7%)
tun (Tunisia)	62	45 (72.6%)	0 (0.0%)	17 (27.4%)	0 (0.0%)	3	2 (66.7%)
nld (Netherlands)	387	34 (8.8%)	102 (26.4%)	250 (64.6%)	1 (0.3%)	94	21 (22.3%)
tur (Turkey)	595	28 (4.7%)	56 (9.4%)	511 (85.9%)	0 (0.0%)	60	15 (25.0%)
aus (Australia)	165	19 (11.5%)	43 (26.1%)	102 (61.8%)	1 (0.6%)	53	14 (26.4%)
npl (Nepal)	63	19 (30.2%)	11 (17.5%)	33 (52.4%)	0 (0.0%)	16	8 (50.0%)
gbr (United Kingdom)	285	18 (6.3%)	82 (28.8%)	184 (64.6%)	1 (0.4%)	93	16 (17.2%)
mwi (Malawi)	58	18 (31.0%)	2 (3.4%)	37 (63.8%)	1 (1.7%)	9	3 (33.3%)
chn (China)	301	17 (5.6%)	61 (20.3%)	223 (74.1%)	0 (0.0%)	39	5 (12.8%)
grc (Greece)	116	17 (14.7%)	9 (7.8%)	90 (77.6%)	0 (0.0%)	7	1 (14.3%)
rou (Romania)	116	17 (14.7%)	40 (34.5%)	59 (50.9%)	0 (0.0%)	21	7 (33.3%)
zaf (South Africa)	143	17 (11.9%)	8 (5.6%)	118 (82.5%)	0 (0.0%)	29	9 (31.0%)
deu (Germany)	571	16 (2.8%)	165 (28.9%)	390 (68.3%)	0 (0.0%)	93	11 (11.8%)
jpn (Japan)	244	16 (6.6%)	41 (16.8%)	187 (76.6%)	0 (0.0%)	41	10 (24.4%)
vnm (Vietnam)	88	16 (18.2%)	16 (18.2%)	55 (62.5%)	1 (1.1%)	17	7 (41.2%)
ken (Kenya)	72	14 (19.4%)	5 (6.9%)	53 (73.6%)	0 (0.0%)	21	9 (42.9%)
phl (Philippines)	155	14 (9.0%)	22 (14.2%)	119 (76.8%)	0 (0.0%)	26	11 (42.3%)
pol (Poland)	311	14 (4.5%)	31 (10.0%)	266 (85.5%)	0 (0.0%)	84	9 (10.7%)
hkg (Hong Kong)	84	12 (14.3%)	22 (26.2%)	49 (58.3%)	1 (1.2%)	26	9 (34.6%)
idn (Indonesia)	34	12 (35.3%)	6 (17.6%)	16 (47.1%)	0 (0.0%)	19	8 (42.1%)
mus (Mauritius)	39	12 (30.8%)	4 (10.3%)	23 (59.0%)	0 (0.0%)	25	10 (40.0%)
can (Canada)	180	11 (6.1%)	48 (26.7%)	121 (67.2%)	0 (0.0%)	38	5 (13.2%)
ukr (Ukraine)	129	11 (8.5%)	24 (18.6%)	94 (72.9%)	0 (0.0%)	45	11 (24.4%)
chl (Chile)	117	10 (8.5%)	13 (11.1%)	94 (80.3%)	0 (0.0%)	17	2 (11.8%)
ecu (Ecuador)	78	10 (12.8%)	9 (11.5%)	58 (74.4%)	1 (1.3%)	18	8 (44.4%)
irn (Iran)	340	10 (2.9%)	66 (19.4%)	264 (77.6%)	0 (0.0%)	58	9 (15.5%)
isr (Israel)	56	10 (17.9%)	5 (8.9%)	41 (73.2%)	0 (0.0%)	10	5 (50.0%)
esp (Spain)	100	9 (9.0%)	15 (15.0%)	76 (76.0%)	0 (0.0%)	28	7 (25.0%)
ita (Italy)	134	9 (6.7%)	19 (14.2%)	106 (79.1%)	0 (0.0%)	28	6 (21.4%)
tha (Thailand)	215	9 (4.2%)	7 (3.3%)	198 (92.1%)	1 (0.5%)	19	8 (42.1%)
arg (Argentina)	68	6 (8.8%)	7 (10.3%)	55 (80.9%)	0 (0.0%)	20	4 (20.0%)
bel (Belgium)	43	6 (14.0%)	11 (25.6%)	26 (60.5%)	0 (0.0%)	20	4 (20.0%)
bol (Bolivia)	78	6 (7.7%)	7 (9.0%)	65 (83.3%)	0 (0.0%)	4	2 (50.0%)
col (Colombia)	51	6 (11.8%)	1 (2.0%)	44 (86.3%)	0 (0.0%)	12	4 (33.3%)
dnk (Denmark)	27	6 (22.2%)	8 (29.6%)	13 (48.1%)	0 (0.0%)	11	4 (36.4%)
jor (Jordan)	11	6 (54.5%)	0 (0.0%)	5 (45.5%)	0 (0.0%)	2	1 (50.0%)
pry (Paraguay)	38	6 (15.8%)	5 (13.2%)	27 (71.1%)	0 (0.0%)	10	5 (50.0%)
twn (Taiwan)	88	6 (6.8%)	10 (11.4%)	72 (81.8%)	0 (0.0%)	11	3 (27.3%)
ven (Venezuela)	105	6 (5.7%)	16 (15.2%)	80 (76.2%)	3 (2.9%)	12	4 (33.3%)
cze (Czech Republic)	30	4 (13.3%)	6 (20.0%)	20 (66.7%)	0 (0.0%)	18	3 (16.7%)
mex (Mexico)	188	4 (2.1%)	19 (10.1%)	164 (87.2%)	1 (0.5%)	30	3 (10.0%)
sau (Saudi Arabia)	205	4 (2.0%)	17 (8.3%)	184 (89.8%)	0 (0.0%)	12	4 (33.3%)
uzb (Uzbekistan)	13	4 (30.8%)	0 (0.0%)	9 (69.2%)	0 (0.0%)	6	1 (16.7%)
mda (Moldova, Republic of)	8	3 (37.5%)	3 (37.5%)	2 (25.0%)	0 (0.0%)	5	2 (40.0%)
mmr (Myanmar)	14	3 (21.4%)	0 (0.0%)	11 (78.6%)	0 (0.0%)	11	3 (27.3%)
swe (Sweden)	73	3 (4.1%)	15 (20.5%)	55 (75.3%)	0 (0.0%)	20	2 (10.0%)
uga (Uganda)	33	3 (9.1%)	4 (12.1%)	26 (78.8%)	0 (0.0%)	9	3 (33.3%)
ago (Angola)	82	2 (2.4%)	2 (2.4%)	78 (95.1%)	0 (0.0%)	8	2 (25.0%)
are (United Arab Emirates)	72	2 (2.8%)	7 (9.7%)	62 (86.1%)	1 (1.4%)	6	3 (50.0%)
bgd (Bangladesh)	37	2 (5.4%)	1 (2.7%)	34 (91.9%)	0 (0.0%)	23	2 (8.7%)
blr (Belarus)	61	2 (3.3%)	1 (1.6%)	58 (95.1%)	0 (0.0%)	7	1 (14.3%)
che (Switzerland)	76	2 (2.6%)	10 (13.2%)	63 (82.9%)	1 (1.3%)	20	2 (10.0%)
cri (Costa Rica)	15	2 (13.3%)	1 (6.7%)	12 (80.0%)	0 (0.0%)	9	1 (11.1%)
fra (France)	121	2 (1.7%)	36 (29.8%)	83 (68.6%)	0 (0.0%)	21	2 (9.5%)
imn (Isle of Man)	2	2 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	2	2 (100.0%)
nzl (New Zealand)	21	2 (9.5%)	4 (19.0%)	15 (71.4%)	0 (0.0%)	11	2 (18.2%)
pak (Pakistan)	29	2 (6.9%)	8 (27.6%)	18 (62.1%)	1 (3.4%)	11	3 (27.3%)
pan (Panama)	42	2 (4.8%)	7 (16.7%)	32 (76.2%)	1 (2.4%)	9	3 (33.3%)
rwa (Rwanda)	13	2 (15.4%)	2 (15.4%)	9 (69.2%)	0 (0.0%)	5	2 (40.0%)
sgp (Singapore)	35	2 (5.7%)	10 (28.6%)	23 (65.7%)	0 (0.0%)	18	1 (5.6%)
srb (Serbia)	148	2 (1.4%)	1 (0.7%)	145 (98.0%)	0 (0.0%)	10	2 (20.0%)
ury (Uruguay)	54	2 (3.7%)	13 (24.1%)	39 (72.2%)	0 (0.0%)	7	2 (28.6%)
abw (Aruba)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
alb (Albania)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
bhr (Bahrain)	12	1 (8.3%)	1 (8.3%)	10 (83.3%)	0 (0.0%)	3	1 (33.3%)
blz (Belize)	7	1 (14.3%)	1 (14.3%)	5 (71.4%)	0 (0.0%)	1	1 (100.0%)
bwa (Botswana)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
civ (Ivory Coast (Cote D'Ivoire))	7	1 (14.3%)	0 (0.0%)	6 (85.7%)	0 (0.0%)	1	1 (100.0%)
cok (Cook Islands)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	1	1 (100.0%)
cpv (Cape Verde)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	1	1 (100.0%)
dji (Djibouti)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
kaz (Kazakhstan)	85	1 (1.2%)	4 (4.7%)	80 (94.1%)	0 (0.0%)	10	1 (10.0%)
kor (South Korea)	63	1 (1.6%)	35 (55.6%)	27 (42.9%)	0 (0.0%)	8	1 (12.5%)
lbn (Lebanon)	12	1 (8.3%)	2 (16.7%)	9 (75.0%)	0 (0.0%)	6	1 (16.7%)
ltu (Lithuania)	14	1 (7.1%)	2 (14.3%)	11 (78.6%)	0 (0.0%)	6	1 (16.7%)
mng (Mongolia)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
mys (Malaysia)	17	1 (5.9%)	4 (23.5%)	12 (70.6%)	0 (0.0%)	5	1 (20.0%)
nor (Norway)	33	1 (3.0%)	5 (15.2%)	27 (81.8%)	0 (0.0%)	10	1 (10.0%)
pri (Puerto Rico)	10	1 (10.0%)	2 (20.0%)	7 (70.0%)	0 (0.0%)	2	1 (50.0%)
pse (Palestinian Territory, Occupied)	48	1 (2.1%)	0 (0.0%)	47 (97.9%)	0 (0.0%)	1	1 (100.0%)
tgo (Togo)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
zmb (Zambia)	4	1 (25.0%)	0 (0.0%)	3 (75.0%)	0 (0.0%)	3	1 (33.3%)
and (Andorra, Principality of)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
arm (Armenia)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	3	0 (0.0%)
aut (Austria)	65	0 (0.0%)	14 (21.5%)	51 (78.5%)	0 (0.0%)	15	0 (0.0%)
aze (Azerbaijan)	32	0 (0.0%)	0 (0.0%)	32 (100.0%)	0 (0.0%)	4	0 (0.0%)
bgr (Bulgaria)	31	0 (0.0%)	12 (38.7%)	19 (61.3%)	0 (0.0%)	23	0 (0.0%)
bih (Bosnia and Herzegovina)	5	0 (0.0%)	1 (20.0%)	4 (80.0%)	0 (0.0%)	2	0 (0.0%)
btn (Bhutan)	13	0 (0.0%)	3 (23.1%)	10 (76.9%)	0 (0.0%)	4	0 (0.0%)
cmr (Cameroon)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
cod (Congo, The Democratic Republic of the)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
cub (Cuba)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
cyp (Cyprus)	3	0 (0.0%)	1 (33.3%)	2 (66.7%)	0 (0.0%)	2	0 (0.0%)
dom (Dominican Republic)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	1	0 (0.0%)
dza (Algeria)	25	0 (0.0%)	1 (4.0%)	24 (96.0%)	0 (0.0%)	2	0 (0.0%)
est (Estonia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
eth (Ethiopia)	18	0 (0.0%)	0 (0.0%)	18 (100.0%)	0 (0.0%)	2	0 (0.0%)
fin (Finland)	34	0 (0.0%)	9 (26.5%)	25 (73.5%)	0 (0.0%)	7	0 (0.0%)
geo (Georgia)	17	0 (0.0%)	1 (5.9%)	16 (94.1%)	0 (0.0%)	4	0 (0.0%)
gha (Ghana)	63	0 (0.0%)	0 (0.0%)	63 (100.0%)	0 (0.0%)	4	0 (0.0%)
gtm (Guatemala)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
hrv (Croatia)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
hun (Hungary)	17	0 (0.0%)	8 (47.1%)	9 (52.9%)	0 (0.0%)	7	0 (0.0%)
irl (Ireland)	38	0 (0.0%)	9 (23.7%)	29 (76.3%)	0 (0.0%)	16	0 (0.0%)
irq (Iraq)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	4	0 (0.0%)
isl (Iceland)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
kgz (Kyrgyz Republic (Kyrgyzstan))	10	0 (0.0%)	0 (0.0%)	10 (100.0%)	0 (0.0%)	4	0 (0.0%)
khm (Cambodia, Kingdom of)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
kwt (Kuwait)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lbr (Liberia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
lby (Libya)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	3	0 (0.0%)
lie (Liechtenstein)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
lka (Sri Lanka)	2	0 (0.0%)	1 (50.0%)	1 (50.0%)	0 (0.0%)	2	0 (0.0%)
lux (Luxembourg)	6	0 (0.0%)	5 (83.3%)	1 (16.7%)	0 (0.0%)	3	0 (0.0%)
lva (Latvia)	4	0 (0.0%)	3 (75.0%)	1 (25.0%)	0 (0.0%)	2	0 (0.0%)
mar (Morocco)	30	0 (0.0%)	0 (0.0%)	30 (100.0%)	0 (0.0%)	2	0 (0.0%)
mdv (Maldives)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	2	0 (0.0%)
nam (Namibia)	5	0 (0.0%)	1 (20.0%)	3 (60.0%)	1 (20.0%)	1	1 (100.0%)
nga (Nigeria)	21	0 (0.0%)	4 (19.0%)	17 (81.0%)	0 (0.0%)	6	0 (0.0%)
omn (Oman)	15	0 (0.0%)	1 (6.7%)	14 (93.3%)	0 (0.0%)	3	0 (0.0%)
per (Peru)	19	0 (0.0%)	7 (36.8%)	12 (63.2%)	0 (0.0%)	6	0 (0.0%)
prt (Portugal)	73	0 (0.0%)	14 (19.2%)	59 (80.8%)	0 (0.0%)	7	0 (0.0%)
pyf (Polynesia [French])	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	2	0 (0.0%)
qat (Qatar)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
reu (Reunion [French])	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
sdn (Sudan)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	2	0 (0.0%)
slv (El Salvador)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
som (Somalia)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	2	0 (0.0%)
svk (Slovak Republic)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	3	0 (0.0%)
svn (Slovenia)	12	0 (0.0%)	0 (0.0%)	12 (100.0%)	0 (0.0%)	5	0 (0.0%)
syc (Seychelles)	2	0 (0.0%)	2 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
syr (Syria)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
tcd (Chad)	7	0 (0.0%)	6 (85.7%)	1 (14.3%)	0 (0.0%)	2	0 (0.0%)
tkm (Turkmenistan)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
vgb (British Virgin Islands)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)