[REN-BGP-stats-all] IPv4 R&E Routing Table Report - RouteViews PacWave (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Sat Jan 18 22:35:46 UTC 2025
IPv4 R&E Routing Table Report 22:35 GMT Sat 18 Jan, 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: 32042
Prefixes after maximum aggregation (per Origin AS): 15507
Deaggregation factor: 2.07
Unique aggregates announced (without unneeded subnets): 18492
Total ASes present in the Internet Routing Table: 2854
Prefixes per ASN: 11.23
Origin-only ASes present in the Internet Routing Table: 2469
Origin ASes announcing only one prefix: 1097
Transit ASes present in the Internet Routing Table: 385
Transit-only ASes present in the Internet Routing Table: 65
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 3.4
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: 46101
Number of 32-bit ASNs visible in the Routing Table: 689
Prefixes from 32-bit ASNs in the Routing Table: 4855
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: 345402880
Equivalent to 20 /8s, 150 /16s and 110 /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: 4283
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4664
Total APNIC prefixes after maximum aggregation: 2263
APNIC Deaggregation factor: 2.06
Prefixes being announced from the APNIC address blocks: 4879
Unique aggregates announced from the APNIC address blocks: 2800
APNIC Region origin ASes present in the Internet Routing Table: 567
APNIC Prefixes per ASN: 8.60
APNIC Region origin ASes announcing only one prefix: 241
APNIC Region transit ASes present in the Internet Routing Table: 58
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: 47311872
Equivalent to 2 /8s, 209 /16s and 236 /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: 21177
Total ARIN prefixes after maximum aggregation: 9588
ARIN Deaggregation factor: 2.21
Prefixes being announced from the ARIN address blocks: 20388
Unique aggregates announced from the ARIN address blocks: 11153
ARIN Region origin ASes present in the Internet Routing Table: 1344
ARIN Prefixes per ASN: 15.17
ARIN Region origin ASes announcing only one prefix: 472
ARIN Region transit ASes present in the Internet Routing Table: 168
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: 224
Number of ARIN addresses announced to Internet: 208846592
Equivalent to 12 /8s, 114 /16s and 191 /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: 3659
Total RIPE prefixes after maximum aggregation: 2935
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 4214
Unique aggregates announced from the RIPE address blocks: 3578
RIPE Region origin ASes present in the Internet Routing Table: 668
RIPE Prefixes per ASN: 6.31
RIPE Region origin ASes announcing only one prefix: 299
RIPE Region transit ASes present in the Internet Routing Table: 110
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 14
Number of RIPE region 32-bit ASNs visible in the Routing Table: 158
Number of RIPE addresses announced to Internet: 81968384
Equivalent to 4 /8s, 226 /16s and 189 /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: 1396
Total LACNIC prefixes after maximum aggregation: 539
LACNIC Deaggregation factor: 2.59
Prefixes being announced from the LACNIC address blocks: 1402
Unique aggregates announced from the LACNIC address blocks: 719
LACNIC Region origin ASes present in the Internet Routing Table: 157
LACNIC Prefixes per ASN: 8.93
LACNIC Region origin ASes announcing only one prefix: 55
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: 65
Number of LACNIC addresses announced to Internet: 4729600
Equivalent to 0 /8s, 72 /16s and 43 /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: 1142
Total AfriNIC prefixes after maximum aggregation: 178
AfriNIC Deaggregation factor: 6.42
Prefixes being announced from the AfriNIC address blocks: 1149
Unique aggregates announced from the AfriNIC address blocks: 232
AfriNIC Region origin ASes present in the Internet Routing Table: 51
AfriNIC Prefixes per ASN: 22.53
AfriNIC Region origin ASes announcing only one prefix: 30
AfriNIC Region transit ASes present in the Internet Routing Table: 10
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 20
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30
Number of AfriNIC addresses announced to Internet: 2541824
Equivalent to 0 /8s, 38 /16s and 201 /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 449 180 24 CSTNET-AS-AP Computer Network Information
1237 192 74 146 KREONET-AS-KR KISTI, KR
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 297 115 AARNET-AS-AP Australian Academic and Rese
55824 146 19 20 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 68 37 10 UNINET-AS-AP UNINET-, TH
2697 58 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 5133 4915 2409 AMAZON-02, US
396982 2898 3657 441 GOOGLE-CLOUD-PLATFORM, US
714 1159 4392 5 APPLE-ENGINEERING, US
14618 1001 4444 762 AMAZON-AES, US
15169 934 2011 70 GOOGLE, US
8075 711 16017 599 MICROSOFT-CORP-MSN-AS-BLOCK, US
2152 526 507 99 CENIC-2152, US
2920 226 44 49 LACOE, US
668 205 630 174 DNIC-AS-00668, US
376 201 162 150 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
786 185 1767 182 JANET Jisc Services Limited, GB
8895 130 24 5 ISU Internet Services Unit ISU, SA
559 114 533 104 SWITCH Peering requests: peering at switch.c
1103 96 1743 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 26 73 ROEDUNET, RO
8987 86 243 62 AMAZON EXPANSION, IE
137 82 677 77 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 159 178 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
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
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
4270 46 16 1 Red de Interconexion Universitaria, AR
28614 38 2 2 Fundacao Universidade Regional de Blumena
1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S
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 545 82 3 KENET-AS, KE
2018 380 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 32 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
37182 7 0 7 TERNET, TZ
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 5133 4915 2409 AMAZON-02, US
396982 2898 3657 441 GOOGLE-CLOUD-PLATFORM, US
714 1159 4392 5 APPLE-ENGINEERING, US
14618 1001 4444 762 AMAZON-AES, US
15169 934 2011 70 GOOGLE, US
8075 711 16017 599 MICROSOFT-CORP-MSN-AS-BLOCK, US
2907 626 2202 463 SINET-AS Research Organization of Informa
36914 545 82 3 KENET-AS, KE
2152 526 507 99 CENIC-2152, US
7497 449 180 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 2898 2457 GOOGLE-CLOUD-PLATFORM, US
714 1159 1154 APPLE-ENGINEERING, US
15169 934 864 GOOGLE, US
36914 545 542 KENET-AS, KE
2152 526 427 CENIC-2152, US
7497 449 425 CSTNET-AS-AP Computer Network Information Cente
2018 380 309 TENET-1, ZA
14618 1001 239 AMAZON-AES, US
5786 198 197 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
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 /16:2416 /17:620 /18:599
/19:867 /20:3036 /21:1579 /22:2284 /23:2453 /24:17727
/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 857 5133 AMAZON-02, US
36914 521 545 KENET-AS, KE
14618 318 1001 AMAZON-AES, US
15169 268 934 GOOGLE, US
396982 266 2898 GOOGLE-CLOUD-PLATFORM, US
8075 128 711 MICROSOFT-CORP-MSN-AS-BLOCK, US
8895 125 130 ISU Internet Services Unit ISU, SA
2152 62 526 CENIC-2152, US
23024 36 97 OCDE, US
3267 34 78 NIKS, RU
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 2:1 3:278 4:2 5:24 6:4
8:28 12:1 13:174 14:93 15:135 16:126
17:309 18:322 23:126 24:3 31:6 34:22
35:90 36:1 37:8 38:11 40:5 41:224
42:11 43:2 44:4 45:92 46:14 47:1
49:11 50:13 52:859 54:187 57:10 58:1
59:19 60:6 61:3 62:16 63:46 64:185
65:49 66:121 67:77 68:27 69:69 70:37
71:36 72:20 74:162 75:1 76:46 77:12
78:3 79:10 80:13 81:26 82:7 83:7
84:9 85:51 86:6 87:6 88:1 89:22
91:60 92:9 93:45 94:7 95:3 96:6
97:1 98:15 99:79 101:1 102:16 103:368
104:256 107:42 108:169 109:8 111:22 113:5
114:32 115:1 116:14 117:10 118:33 119:23
121:28 122:11 123:8 124:42 125:5 128:61
129:41 130:171 131:81 132:66 133:155 134:111
135:7 136:312 137:121 138:72 139:22 140:47
141:15 142:340 143:41 144:73 145:8 146:140
147:85 148:209 149:20 150:78 151:51 152:147
153:14 154:43 155:110 156:135 157:40 158:43
159:161 160:39 161:53 162:113 163:76 164:29
165:81 166:6 167:40 168:185 169:15 170:209
171:1 172:126 173:125 174:2 175:16 176:6
177:6 178:3 179:14 180:16 181:1 182:11
184:10 185:150 186:3 187:22 188:20 189:3
190:34 191:13 192:1700 193:302 194:130 195:89
196:146 197:330 198:635 199:404 200:271 201:38
202:666 203:464 204:451 205:219 206:253 207:354
208:169 209:267 210:220 211:3 212:177 213:24
214:9 216:266 217:17 218:23 219:6 220:16
222:2 223:15
End of report
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