[REN-BGP-stats-all] IPv4 R&E Routing Table Report - RouteViews PacWave (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Sun Feb 9 22:35:57 UTC 2025
IPv4 R&E Routing Table Report 22:35 GMT Sun 09 Feb, 2025
IPv4 BGP Table (R&E) as seen at RouteViews PacWave.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/PacWave/
Analysis Summary
----------------
BGP routing table entries examined: 32281
Prefixes after maximum aggregation (per Origin AS): 15567
Deaggregation factor: 2.07
Unique aggregates announced (without unneeded subnets): 18634
Total ASes present in the Internet Routing Table: 2849
Prefixes per ASN: 11.33
Origin-only ASes present in the Internet Routing Table: 2467
Origin ASes announcing only one prefix: 1099
Transit ASes present in the Internet Routing Table: 382
Transit-only ASes present in the Internet Routing Table: 62
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 3.5
Max AS path length visible: 20
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 4
Number of instances of unregistered ASNs: 4
Number of 32-bit ASNs allocated by the RIRs: 46100
Number of 32-bit ASNs visible in the Routing Table: 685
Prefixes from 32-bit ASNs in the Routing Table: 4815
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 10
Number of addresses announced to Internet: 345311488
Equivalent to 20 /8s, 149 /16s and 9 /24s
Percentage of available address space announced: 9.3
Percentage of allocated address space announced: 9.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 4312
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4734
Total APNIC prefixes after maximum aggregation: 2279
APNIC Deaggregation factor: 2.08
Prefixes being announced from the APNIC address blocks: 4954
Unique aggregates announced from the APNIC address blocks: 2876
APNIC Region origin ASes present in the Internet Routing Table: 568
APNIC Prefixes per ASN: 8.72
APNIC Region origin ASes announcing only one prefix: 242
APNIC Region transit ASes present in the Internet Routing Table: 56
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 212
Number of APNIC addresses announced to Internet: 47268352
Equivalent to 2 /8s, 209 /16s and 66 /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, 131072-153913
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: 21261
Total ARIN prefixes after maximum aggregation: 9628
ARIN Deaggregation factor: 2.21
Prefixes being announced from the ARIN address blocks: 20464
Unique aggregates announced from the ARIN address blocks: 11201
ARIN Region origin ASes present in the Internet Routing Table: 1337
ARIN Prefixes per ASN: 15.31
ARIN Region origin ASes announcing only one prefix: 468
ARIN Region transit ASes present in the Internet Routing Table: 167
Average ARIN Region AS path length visible: 2.9
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 222
Number of ARIN addresses announced to Internet: 208684544
Equivalent to 12 /8s, 112 /16s and 70 /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, 393216-402332
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, 45/8, 47/8, 48/8, 50/8, 52/8,
54/8, 55/8, 56/8, 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: 3696
Total RIPE prefixes after maximum aggregation: 2945
RIPE Deaggregation factor: 1.26
Prefixes being announced from the RIPE address blocks: 4254
Unique aggregates announced from the RIPE address blocks: 3609
RIPE Region origin ASes present in the Internet Routing Table: 669
RIPE Prefixes per ASN: 6.36
RIPE Region origin ASes announcing only one prefix: 300
RIPE Region transit ASes present in the Internet Routing Table: 108
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 14
Number of RIPE region 32-bit ASNs visible in the Routing Table: 156
Number of RIPE addresses announced to Internet: 82064640
Equivalent to 4 /8s, 228 /16s and 53 /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
196608-216475
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
53/8, 57/8, 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: 1408
Total LACNIC prefixes after maximum aggregation: 539
LACNIC Deaggregation factor: 2.61
Prefixes being announced from the LACNIC address blocks: 1414
Unique aggregates announced from the LACNIC address blocks: 713
LACNIC Region origin ASes present in the Internet Routing Table: 156
LACNIC Prefixes per ASN: 9.06
LACNIC Region origin ASes announcing only one prefix: 56
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64
Number of LACNIC addresses announced to Internet: 4695808
Equivalent to 0 /8s, 71 /16s and 167 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-274844 + 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: 1178
Total AfriNIC prefixes after maximum aggregation: 172
AfriNIC Deaggregation factor: 6.85
Prefixes being announced from the AfriNIC address blocks: 1185
Unique aggregates announced from the AfriNIC address blocks: 225
AfriNIC Region origin ASes present in the Internet Routing Table: 55
AfriNIC Prefixes per ASN: 21.55
AfriNIC Region origin ASes announcing only one prefix: 33
AfriNIC Region transit ASes present in the Internet Routing Table: 11
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 20
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 31
Number of AfriNIC addresses announced to Internet: 2593536
Equivalent to 0 /8s, 39 /16s and 147 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 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
2907 626 2202 463 SINET-AS Research Organization of Informa
7497 450 180 24 CSTNET-AS-AP Computer Network Information
1237 192 74 146 KREONET-AS-KR KISTI, KR
58647 183 18 2 KAGAWAU-AS Kagawa University, JP
7575 173 297 116 AARNET-AS-AP Australian Academic and Rese
55824 147 19 21 NKN-CORE-NW NKN Core Network, IN
4538 140 4192 71 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 69 37 10 UNINET-AS-AP UNINET-, TH
2697 59 4 34 ERX-ERNET-AS Education and Research Netwo
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 5155 4920 2428 AMAZON-02, US
396982 2920 3659 445 GOOGLE-CLOUD-PLATFORM, US
714 1158 4392 5 APPLE-ENGINEERING, US
14618 1008 4444 769 AMAZON-AES, US
15169 948 2012 71 GOOGLE, US
8075 713 16017 601 MICROSOFT-CORP-MSN-AS-BLOCK, US
2152 530 507 99 CENIC-2152, US
2920 226 44 49 LACOE, US
668 210 647 178 DNIC-AS-00668, US
376 202 162 151 RISQ-AS, CA
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
786 208 1767 183 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
8895 110 24 5 ISU Internet Services Unit ISU, SA
1103 98 1743 84 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 26 73 ROEDUNET, RO
8987 86 243 62 AMAZON EXPANSION, IE
137 80 676 76 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 78 462 78 BELWUE BelWue-Koordination, DE
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 236 178 42 Rede Nacional de Ensino e Pesquisa, BR
28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M
11340 109 25 52 Red Universitaria Nacional, CL
4270 52 16 1 Red de Interconexion Universitaria, AR
61468 52 5 17 CEDIA, EC
2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
28614 38 2 2 Fundacao Universidade Regional de Blumena
1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S
3596 37 8 4 Universidad Autonoma Metropolitana, MX
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 552 82 3 KENET-AS, KE
2018 379 319 71 TENET-1, ZA
8094 37 36 13 PUKNET, ZA
37182 36 8 1 TERNET, TZ
37215 34 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37661 12 8 4 NRaE1-AS, NG
37501 11 49 6 UOFS, ZA
327700 11 16 1 MoRENet, MZ
36982 8 33 8 UCT, ZA
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 5155 4920 2428 AMAZON-02, US
396982 2920 3659 445 GOOGLE-CLOUD-PLATFORM, US
714 1158 4392 5 APPLE-ENGINEERING, US
14618 1008 4444 769 AMAZON-AES, US
15169 948 2012 71 GOOGLE, US
8075 713 16017 601 MICROSOFT-CORP-MSN-AS-BLOCK, US
2907 626 2202 463 SINET-AS Research Organization of Informa
36914 552 82 3 KENET-AS, KE
2152 530 507 99 CENIC-2152, US
7497 450 180 24 CSTNET-AS-AP Computer Network Information
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
396982 2920 2475 GOOGLE-CLOUD-PLATFORM, US
714 1158 1153 APPLE-ENGINEERING, US
15169 948 877 GOOGLE, US
36914 552 549 KENET-AS, KE
2152 530 431 CENIC-2152, US
7497 450 426 CSTNET-AS-AP Computer Network Information Cente
2018 379 308 TENET-1, ZA
14618 1008 239 AMAZON-AES, US
5786 198 197 UPRENET, PR
1916 236 194 Rede Nacional de Ensino e Pesquisa, BR
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
65208 PRIVATE 63.225.1.0/24 11570 AS11570, US
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
65208 PRIVATE 206.206.156.0/22 11570 AS11570, US
65208 PRIVATE 216.161.32.0/23 11570 AS11570, US
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
64.186.3.0/24 Origin: 16509 AMAZON-02, US
64.186.3.0/24 Transit: 101 WASH-NSF-AS, US
103.165.160.0/24 Origin: 16509 AMAZON-02, US
103.165.160.0/24 Transit: 101 WASH-NSF-AS, US
103.177.50.0/23 Origin: 396982 GOOGLE-CLOUD-PLATFORM, US
103.177.50.0/23 Transit: 15169 GOOGLE, US
164.160.192.0/21 Origin: 37661 NRaE1-AS, NG
164.160.192.0/21 Transit: 37288 WACREN, SN
192.225.212.0/24 Origin: 14618 AMAZON-AES, US
192.225.212.0/24 Transit: 16509 AMAZON-02, US
Complete listing at https://bgp.nsrc.org/REN/PacWave/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 /8:1 /9:3 /10:3 /11:11 /12:38
/13:52 /14:117 /15:236 /16:2414 /17:620 /18:599
/19:872 /20:3039 /21:1580 /22:2288 /23:2472 /24:17936
/25:0 /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
16509 854 5155 AMAZON-02, US
36914 528 552 KENET-AS, KE
14618 321 1008 AMAZON-AES, US
15169 269 948 GOOGLE, US
396982 268 2920 GOOGLE-CLOUD-PLATFORM, US
8075 126 713 MICROSOFT-CORP-MSN-AS-BLOCK, US
8895 107 110 ISU Internet Services Unit ISU, SA
2152 62 530 CENIC-2152, US
23024 36 97 OCDE, US
37182 35 36 TERNET, TZ
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 2:1 3:276 4:2 5:24 6:4
8:28 12:1 13:171 14:93 15:135 16:126
17:305 18:327 23:128 24:3 31:6 34:23
35:91 36:1 38:11 40:6 41:255 42:11
43:2 44:4 45:93 46:13 47:1 49:11
50:13 52:859 54:186 57:14 58:1 59:19
60:6 61:3 62:16 63:46 64:185 65:49
66:120 67:77 68:27 69:70 70:37 71:35
72:22 74:164 75:1 76:46 77:12 78:3
79:10 80:15 81:26 82:8 83:9 84:9
85:57 86:6 87:6 88:1 89:22 91:58
92:9 93:39 94:7 95:3 96:6 97:1
98:15 99:78 101:1 102:17 103:369 104:266
107:42 108:169 109:8 111:22 113:5 114:32
115:1 116:14 117:66 118:33 119:30 121:28
122:11 123:8 124:42 125:5 128:60 129:44
130:171 131:81 132:64 133:156 134:112 135:7
136:312 137:121 138:72 139:21 140:47 141:16
142:347 143:39 144:72 145:8 146:140 147:80
148:210 149:20 150:77 151:54 152:147 153:14
154:45 155:110 156:135 157:41 158:44 159:164
160:39 161:53 162:113 163:77 164:29 165:83
166:5 167:40 168:186 169:14 170:215 171:1
172:128 173:123 174:2 175:16 176:6 177:6
178:3 179:10 180:16 181:1 182:11 184:9
185:151 186:3 187:22 188:21 189:3 190:34
191:13 192:1712 193:342 194:137 195:89 196:147
197:337 198:644 199:405 200:270 201:38 202:670
203:470 204:451 205:219 206:253 207:355 208:169
209:280 210:221 211:3 212:160 213:24 214:9
216:268 217:17 218:23 219:6 220:16 222:2
223:15
End of report
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