[SANOG] Weekly Global IPv4 Routing Table Report
Routing Table Analysis Role Account
cscora at apnic.net
Fri Jan 21 18:02:54 UTC 2022
This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.
The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.
Daily listings are sent to bgp-stats at lists.apnic.net.
For historical data, please see https://thyme.apnic.net.
If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.
IPv4 Routing Table Report 04:00 +10GMT Sat 22 Jan, 2022
BGP Table (Global) as seen in Japan.
Report Website: https://thyme.apnic.net
Detailed Analysis: https://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 885752
Prefixes after maximum aggregation (per Origin AS): 333488
Deaggregation factor: 2.66
Unique aggregates announced (without unneeded subnets): 426024
Total ASes present in the Internet Routing Table: 72653
Prefixes per ASN: 12.19
Origin-only ASes present in the Internet Routing Table: 62334
Origin ASes announcing only one prefix: 25693
Transit ASes present in the Internet Routing Table: 10319
Transit-only ASes present in the Internet Routing Table: 372
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 53
Max AS path prepend of ASN (265020) 50
Prefixes from unregistered ASNs in the Routing Table: 939
Number of instances of unregistered ASNs: 942
Number of 32-bit ASNs allocated by the RIRs: 38352
Number of 32-bit ASNs visible in the Routing Table: 31906
Prefixes from 32-bit ASNs in the Routing Table: 148241
Number of bogon 32-bit ASNs visible in the Routing Table: 19
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 561
Number of addresses announced to Internet: 3068458368
Equivalent to 182 /8s, 228 /16s and 245 /24s
Percentage of available address space announced: 82.9
Percentage of allocated address space announced: 82.9
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.5
Total number of prefixes smaller than registry allocations: 299794
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 232989
Total APNIC prefixes after maximum aggregation: 65532
APNIC Deaggregation factor: 3.56
Prefixes being announced from the APNIC address blocks: 227780
Unique aggregates announced from the APNIC address blocks: 93796
APNIC Region origin ASes present in the Internet Routing Table: 12276
APNIC Prefixes per ASN: 18.55
APNIC Region origin ASes announcing only one prefix: 3498
APNIC Region transit ASes present in the Internet Routing Table: 1713
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 29
Number of APNIC region 32-bit ASNs visible in the Routing Table: 7464
Number of APNIC addresses announced to Internet: 773643392
Equivalent to 46 /8s, 28 /16s and 220 /24s
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-151865
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 257662
Total ARIN prefixes after maximum aggregation: 118661
ARIN Deaggregation factor: 2.17
Prefixes being announced from the ARIN address blocks: 257658
Unique aggregates announced from the ARIN address blocks: 123069
ARIN Region origin ASes present in the Internet Routing Table: 18939
ARIN Prefixes per ASN: 13.60
ARIN Region origin ASes announcing only one prefix: 6859
ARIN Region transit ASes present in the Internet Routing Table: 1951
Average ARIN Region AS path length visible: 3.8
Max ARIN Region AS path length visible: 34
Number of ARIN region 32-bit ASNs visible in the Routing Table: 4303
Number of ARIN addresses announced to Internet: 1296416768
Equivalent to 77 /8s, 69 /16s and 192 /24s
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8,
54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8,
66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8,
73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8,
99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 252589
Total RIPE prefixes after maximum aggregation: 115973
RIPE Deaggregation factor: 2.18
Prefixes being announced from the RIPE address blocks: 248974
Unique aggregates announced from the RIPE address blocks: 148374
RIPE Region origin ASes present in the Internet Routing Table: 28166
RIPE Prefixes per ASN: 8.84
RIPE Region origin ASes announcing only one prefix: 12127
RIPE Region transit ASes present in the Internet Routing Table: 3965
Average RIPE Region AS path length visible: 4.3
Max RIPE Region AS path length visible: 32
Number of RIPE region 32-bit ASNs visible in the Routing Table: 10610
Number of RIPE addresses announced to Internet: 713475712
Equivalent to 42 /8s, 134 /16s and 198 /24s
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
59392-61439, 61952-62463, 64396-64495
196608-213403
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8,
141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 114174
Total LACNIC prefixes after maximum aggregation: 27291
LACNIC Deaggregation factor: 4.18
Prefixes being announced from the LACNIC address blocks: 114934
Unique aggregates announced from the LACNIC address blocks: 48424
LACNIC Region origin ASes present in the Internet Routing Table: 10923
LACNIC Prefixes per ASN: 10.52
LACNIC Region origin ASes announcing only one prefix: 2660
LACNIC Region transit ASes present in the Internet Routing Table: 2212
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 53
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 8611
Number of LACNIC addresses announced to Internet: 176355712
Equivalent to 10 /8s, 130 /16s and 249 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
191/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 27399
Total AfriNIC prefixes after maximum aggregation: 5334
AfriNIC Deaggregation factor: 5.14
Prefixes being announced from the AfriNIC address blocks: 35845
Unique aggregates announced from the AfriNIC address blocks: 11861
AfriNIC Region origin ASes present in the Internet Routing Table: 1583
AfriNIC Prefixes per ASN: 22.64
AfriNIC Region origin ASes announcing only one prefix: 549
AfriNIC Region transit ASes present in the Internet Routing Table: 309
Average AfriNIC Region AS path length visible: 5.1
Max AfriNIC Region AS path length visible: 34
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 918
Number of AfriNIC addresses announced to Internet: 108216320
Equivalent to 6 /8s, 115 /16s and 64 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
9808 8999 8919 50 CHINAMOBILE-CN China Mobile Communicati
7545 5847 787 681 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4693 4192 74 ERX-CERNET-BKB China Education and Rese
7552 3611 1330 20 VIETEL-AS-AP Viettel Group, VN
7713 3490 1038 51 TELKOMNET-AS-AP PT Telekomunikasi Indon
45899 3435 1880 57 VNPT-AS-VN VNPT Corp, VN
4766 2522 11120 603 KIXS-AS-KR Korea Telecom, KR
9498 2250 475 232 BBIL-AP BHARTI Airtel Ltd., IN
45090 2170 1438 79 TENCENT-NET-AP Shenzhen Tencent Compute
4755 2120 429 199 TATACOMM-AS TATA Communications formerl
Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 6131 10140 2618 AMAZON-02, US
11492 4600 305 763 CABLEONE, US
22773 3985 3028 366 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3951 264 30 VIASAT-SP-BACKBONE, US
16625 3665 1892 2564 AKAMAI-AS, US
6327 3352 1318 63 SHAW, CA
749 2888 50784 2144 DNIC-AS-00749, US
30036 2611 374 129 MEDIACOM-ENTERPRISE-BUSINESS, US
209 2507 4978 430 CENTURYLINK-US-LEGACY-QWEST, US
20115 2247 3035 507 CHARTER-20115, US
Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
12479 6817 1718 153 UNI2-AS, ES
9121 6733 1692 17 TTNET, TR
20940 3883 3348 210 AKAMAI-ASN1, NL
8551 3775 378 39 BEZEQ-INTERNATIONAL-AS Bezeqint Interne
39891 3274 188 25 ALJAWWALSTC-AS, SA
12389 2956 2286 904 ROSTELECOM-AS, RU
9009 2501 257 1303 M247, GB
34984 2216 357 602 TELLCOM-AS, TR
47331 1965 314 1496 TTNET, TR
58224 1781 926 588 TCI, IR
Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 10672 3408 575 Uninet S.A. de C.V., MX
10620 3445 519 717 Telmex Colombia S.A., CO
11830 2458 369 62 Instituto Costarricense de Electricidad
13999 1642 283 465 Mega Cable, S.A. de C.V., MX
6503 1440 354 524 Axtel, S.A.B. de C.V., MX
28573 1394 2326 254 CLARO S.A., BR
3816 1245 658 146 COLOMBIA TELECOMUNICACIONES S.A. ESP, C
26615 1147 2350 139 TIM SA, BR
6147 1092 369 21 Telefonica del Peru S.A.A., PE
11664 1000 191 446 Techtel LMDS Comunicaciones Interactiva
Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 1636 393 21 LINKdotNET-AS, EG
24835 1546 515 32 RAYA-AS, EG
36992 1299 1518 262 ETISALAT-MISR, EG
36903 1195 543 114 MT-MPLS, MA
29571 875 63 60 ORANGE-COTE-IVOIRE, CI
36935 716 521 39 Vodafone-, EG
6713 612 1863 34 IAM-AS, MA
15399 519 50 33 WANANCHI-, KE
37342 468 32 1 MOVITEL, MZ
23889 428 232 16 MauritiusTelecom, MU
Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 10672 3408 575 Uninet S.A. de C.V., MX
9808 8999 8919 50 CHINAMOBILE-CN China Mobile Communicati
12479 6817 1718 153 UNI2-AS, ES
9121 6733 1692 17 TTNET, TR
16509 6131 10140 2618 AMAZON-02, US
7545 5847 787 681 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4693 4192 74 ERX-CERNET-BKB China Education and Rese
11492 4600 305 763 CABLEONE, US
22773 3985 3028 366 ASN-CXA-ALL-CCI-22773-RDC, US
7155 3951 264 30 VIASAT-SP-BACKBONE, US
Complete listing at https://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
9808 8999 8949 CHINAMOBILE-CN China Mobile Communications Grou
9121 6733 6716 TTNET, TR
12479 6817 6664 UNI2-AS, ES
7545 5847 5166 TPG-INTERNET-AP TPG Telecom Limited, AU
4538 4693 4619 ERX-CERNET-BKB China Education and Research Net
7155 3951 3921 VIASAT-SP-BACKBONE, US
11492 4600 3837 CABLEONE, US
8551 3775 3736 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
20940 3883 3673 AKAMAI-ASN1, NL
22773 3985 3619 ASN-CXA-ALL-CCI-22773-RDC, US
Complete listing at https://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
46990 UNALLOCATED 8.5.242.0/23 3356 LEVEL3, US
62828 UNALLOCATED 8.21.130.0/24 3356 LEVEL3, US
393266 UNALLOCATED 8.23.52.0/24 46887 LIGHTOWER, US
18604 UNALLOCATED 8.25.204.0/24 3356 LEVEL3, US
32848 UNALLOCATED 8.28.72.0/24 3356 LEVEL3, US
394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US
54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US
1782 UNALLOCATED 8.42.19.0/24 46887 LIGHTOWER, US
395438 UNALLOCATED 8.42.206.0/24 3356 LEVEL3, US
395056 UNALLOCATED 8.45.133.0/24 3356 LEVEL3, US
Complete listing at https://thyme.apnic.net/current/data-badAS
Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.88.99.0/24 6939 HURRICANE, US
Complete listing at https://thyme.apnic.net/current/data-spar
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
23.141.0.0/24 Origin: 395350 UNASSIGNED
23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US
23.154.18.0/24 Origin: 394625 WHITELABELIT, US
23.154.18.0/24 Transit: 6939 HURRICANE, US
23.252.160.0/24 Origin: 398968 GROUP-IID-01, US
23.252.160.0/24 Transit: 174 COGENT-174, US
23.252.161.0/24 Origin: 398968 GROUP-IID-01, US
23.252.161.0/24 Transit: 174 COGENT-174, US
23.252.162.0/24 Origin: 398968 GROUP-IID-01, US
23.252.162.0/24 Transit: 174 COGENT-174, US
Complete listing at https://thyme.apnic.net/current/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:16 /9:13 /10:40 /11:102 /12:305
/13:591 /14:1208 /15:2033 /16:13575 /17:8335 /18:13854
/19:25112 /20:43196 /21:51868 /22:108291 /23:95166 /24:521260
/25:787 /26:0 /27:0 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
9121 5907 6733 TTNET, TR
12479 5767 6817 UNI2-AS, ES
8151 4514 10672 Uninet S.A. de C.V., MX
11492 3534 4600 CABLEONE, US
8551 3240 3775 BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
6327 3163 3352 SHAW, CA
7155 3041 3951 VIASAT-SP-BACKBONE, US
22773 2978 3985 ASN-CXA-ALL-CCI-22773-RDC, US
39891 2810 3274 ALJAWWALSTC-AS, SA
30036 2266 2611 MEDIACOM-ENTERPRISE-BUSINESS, US
Complete listing at https://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1907 2:994 3:153 4:7 5:3714 6:102
7:5 8:1552 9:1 11:172 12:1706 13:410
14:2368 15:147 16:39 17:376 18:130 20:167
21:4 22:188 23:5401 24:2369 25:2 27:2595
29:19 31:2403 32:102 34:1 35:50 36:1734
37:3941 38:2499 39:735 40:149 41:3900 42:1040
43:2096 44:294 45:15966 46:3851 47:304 49:1634
50:1903 51:105 52:1343 54:294 55:734 56:8
57:55 58:1769 59:1135 60:954 61:2264 62:2422
63:1941 64:5384 65:2319 66:4910 67:2921 68:1182
69:4173 70:1347 71:677 72:3075 74:2630 75:1516
76:713 77:2158 78:3812 79:2872 80:1917 81:1661
82:1452 83:1202 84:1326 85:3558 86:706 87:1880
88:2621 89:3138 90:500 91:7497 92:1903 93:2588
94:3256 95:4497 96:1314 97:345 98:993 99:864
100:75 101:1049 102:1902 103:28045 104:4116 105:461
106:845 107:2426 108:753 109:4183 110:2049 111:3207
112:1963 113:1535 114:1526 115:1955 116:1893 117:2504
118:2322 119:1846 120:1670 121:1027 122:2542 123:2114
124:1587 125:2067 128:1362 129:1173 130:917 131:2073
132:757 133:368 134:1934 135:287 136:851 137:857
138:2454 139:1209 140:868 141:1341 142:1249 143:1439
144:1235 145:336 146:1757 147:1472 148:2215 149:1665
150:853 151:1083 152:1802 153:446 154:3668 155:1369
156:1861 157:1212 158:1007 159:2017 160:2389 161:1268
162:3414 163:1204 164:1664 165:1532 166:620 167:1684
168:3674 169:679 170:4303 171:825 172:2991 173:3044
174:1016 175:1128 176:3473 177:4577 178:3014 179:1988
180:2281 181:2866 182:3226 183:1936 184:2417 185:19200
186:4303 187:3547 188:3783 189:3219 190:8841 191:1308
192:10984 193:8507 194:6925 195:4968 196:2916 197:2360
198:5979 199:5994 200:7468 201:5724 202:10420 203:10011
204:4534 205:3366 206:3841 207:3379 208:3996 209:4600
210:4231 211:2457 212:3929 213:3374 214:1147 215:64
216:6386 217:2625 218:1228 219:577 220:1960 221:989
222:876 223:2171
End of report
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