[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CENIC (R&E) view

REN Routing Table Report cscora at bgp.nsrc.org
Fri Aug 11 22:05:43 UTC 2023


IPv4 R&E Routing Table Report   22:05 GMT Fri 11 Aug, 2023

  IPv4 BGP Table (R&E) as seen at CENIC.

Report Website:     https://bgp.nsrc.org/REN
Detailed Analysis:  https://bgp.nsrc.org/REN/CENIC/

Analysis Summary
----------------

BGP routing table entries examined:                               24450
    Prefixes after maximum aggregation (per Origin AS):           13623
    Deaggregation factor:                                          1.79
    Unique aggregates announced (without unneeded subnets):       16143
    Number of IPv4 prefixes with a valid ROA:                     10610
    Number of IPv4 prefixes with an invalid ROA:                     14
    Number of IPv4 prefixes with no ROA:                          13826
Total ASes present in the Internet Routing Table:                  2780
    Prefixes per ASN:                                              8.79
Origin-only ASes present in the Internet Routing Table:            2396
Origin ASes announcing only one prefix:                            1056
Transit ASes present in the Internet Routing Table:                 384
Transit-only ASes present in the Internet Routing Table:             75
Paths with bogon ASNs present in the IPv4 Routing Table:              2
Average AS path length visible in the Internet Routing Table:       3.9
    Max AS path length visible:                                      15
    Max AS path prepend of ASN (395156)                              12
Prefixes from unregistered ASNs in the Routing Table:                 3
    Number of instances of unregistered ASNs:                         3
Number of 32-bit ASNs allocated by the RIRs:                      42407
Number of 32-bit ASNs visible in the Routing Table:                 631
Prefixes from 32-bit ASNs in the Routing Table:                    1933
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:              6
Number of addresses announced to Internet:                    296418560
    Equivalent to 17 /8s, 170 /16s and 253 /24s
    Percentage of available address space announced:                8.0
    Percentage of allocated address space announced:                8.0
    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:        3112

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                     4647
    Total APNIC prefixes after maximum aggregation:                2274
    APNIC Deaggregation factor:                                    2.04
Prefixes being announced from the APNIC address blocks:            4762
    Unique aggregates announced from the APNIC address blocks:     2718
APNIC Region origin ASes present in the Internet Routing Table:     538
    APNIC Prefixes per ASN:                                        8.85
APNIC Region origin ASes announcing only one prefix:                223
APNIC Region transit ASes present in the Internet Routing Table:     57
Average APNIC Region AS path length visible:                        4.2
    Max APNIC Region AS path length visible:                         14
Number of APNIC region 32-bit ASNs visible in the Routing Table:    202
Number of APNIC addresses announced to Internet:               47239680
    Equivalent to 2 /8s, 208 /16s and 210 /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:                     13710
    Total ARIN prefixes after maximum aggregation:                 7757
    ARIN Deaggregation factor:                                     1.77
Prefixes being announced from the ARIN address blocks:            13354
    Unique aggregates announced from the ARIN address blocks:      9246
ARIN Region origin ASes present in the Internet Routing Table:     1273
    ARIN Prefixes per ASN:                                        10.49
ARIN Region origin ASes announcing only one prefix:                 445
ARIN Region transit ASes present in the Internet Routing Table:     165
Average ARIN Region AS path length visible:                         3.5
    Max ARIN Region AS path length visible:                          15
Number of ARIN region 32-bit ASNs visible in the Routing Table:     194
Number of ARIN addresses announced to Internet:               174267648
    Equivalent to 10 /8s, 99 /16s and 29 /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:                      3576
    Total RIPE prefixes after maximum aggregation:                 2850
    RIPE Deaggregation factor:                                     1.25
Prefixes being announced from the RIPE address blocks:             3811
    Unique aggregates announced from the RIPE address blocks:      3165
RIPE Region origin ASes present in the Internet Routing Table:      679
    RIPE Prefixes per ASN:                                         5.61
RIPE Region origin ASes announcing only one prefix:                 301
RIPE Region transit ASes present in the Internet Routing Table:     105
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          13
Number of RIPE region 32-bit ASNs visible in the Routing Table:     143
Number of RIPE addresses announced to Internet:                67375104
    Equivalent to 4 /8s, 4 /16s and 16 /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,
                        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:                    1462
    Total LACNIC prefixes after maximum aggregation:                571
    LACNIC Deaggregation factor:                                   2.56
Prefixes being announced from the LACNIC address blocks:           1463
    Unique aggregates announced from the LACNIC address blocks:     785
LACNIC Region origin ASes present in the Internet Routing Table:    165
    LACNIC Prefixes per ASN:                                       8.87
LACNIC Region origin ASes announcing only one prefix:                63
LACNIC Region transit ASes present in the Internet Routing Table:    26
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        13
Number of LACNIC region 32-bit ASNs visible in the Routing Table:    68
Number of LACNIC addresses announced to Internet:               4759296
    Equivalent to 0 /8s, 72 /16s and 159 /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:                   1052
    Total AfriNIC prefixes after maximum aggregation:               168
    AfriNIC Deaggregation factor:                                  6.26
Prefixes being announced from the AfriNIC address blocks:          1054
    Unique aggregates announced from the AfriNIC address blocks:    223
AfriNIC Region origin ASes present in the Internet Routing Table:    48
    AfriNIC Prefixes per ASN:                                     21.96
AfriNIC Region origin ASes announcing only one prefix:               24
AfriNIC Region transit ASes present in the Internet Routing Table:    9
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       10
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:   24
Number of AfriNIC addresses announced to Internet:              2775296
    Equivalent to 0 /8s, 42 /16s and 89 /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
  2907         593       2146     463  SINET-AS Research Organization of Infor
  7497         432        180      23  CSTNET-AS-AP Computer Network Informati
  1237         191         74     139  KREONET-AS-KR KISTI, KR
 58647         178         18       2  KAGAWAU-AS Kagawa University, JP
  7575         177        329     120  AARNET-AS-AP Australian Academic and Re
  4538         130       4192      73  ERX-CERNET-BKB China Education and Rese
 55824         125         18      17  NKN-CORE-NW NKN Core Network, IN
  4621          70         37      10  UNINET-AS-AP UNINET-, TH
  9411          66         16       2  NONTRINET-AS-AP Kasetsart University, T
  4762          61          4       1  MAHIDOL-BORDER-AS Mahidol University, T

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        4329       4666    1954  AMAZON-02, US
 14618         803       4015     600  AMAZON-AES, US
  8075         369      12790     312  MICROSOFT-CORP-MSN-AS-BLOCK, US
   668         203        652     172  DNIC-AS-00668, US
   376         202        178     150  RISQ-AS, CA
  5786         197         16       1  UPRENET, PR
  2152         145        507      92  CSUNET-NW, US
 18558         136         18       4  NETBLK-RCOEK, US
    81         118        458      28  NCREN, US
   270         118        329      82  AS270, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
   680         284       1903     249  DFN Verein zur Foerderung eines Deutsch
   786         186       1767     183  JANET Jisc Services Limited, GB
  8895         136         24       5  ISU Internet Services Unit ISU, SA
   559         113        533     105  SWITCH Peering requests: peering at switch
  1103          94       1502      83  SURFNET-NL SURFnet, The Netherlands, NL
  2614          94         27      74  ROEDUNET, RO
   137          82        677      77  ASGARR Consortium GARR, IT
   553          74        465      74  BELWUE BelWue-Koordination, DE
  1930          65         81      60  RCCN Fundacao para a Ciencia e a Tecnol
  2200          64        599      59  FR-RENATER Reseau National de telecommu

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  1916         221        176      42  Rede Nacional de Ensino e Pesquisa, BR
 28391         153         10      67  Universidad Juarez Autonoma de Tabasco,
 11340         104         24      48  Red Universitaria Nacional, CL
271640          73          8       1  UNIVERSIDADE FEDERAL DE VICOSA, BR
  2715          58        102      38  Fundacao Carlos Chagas Filho de Amparo 
  4270          48         16       1  Red de Interconexion Universitaria, AR
 19611          48         17       2  Associacao Antonio Vieira - Unisinos, B
 61468          43          3      14  CEDIA, EC
 28614          38          2       2  Fundacao Universidade Regional de Blume
  3596          34          4       3  Universidad Autonoma Metropolitana, MX

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  2018         370        319      71  TENET-1, ZA
 36914         261         82       3  KENET-AS, KE
327687         165         28       3  RENU, UG
  8094          48         48      15  PUKNET, ZA
327700          40         16       1  MoRENet, MZ
  3208          32          2       1  ARN, DZ
  6879          24          2       9  ENSTINET-, EG
 37074          13          8       2  UG-AS, GH
 37501          11         49       6  UOFS, ZA
 37654          10          1       6  RwEdNet-AS, RW

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        4329       4666    1954  AMAZON-02, US
 14618         803       4015     600  AMAZON-AES, US
  2907         593       2146     463  SINET-AS Research Organization of Infor
  7497         432        180      23  CSTNET-AS-AP Computer Network Informati
  2018         370        319      71  TENET-1, ZA
  8075         369      12790     312  MICROSOFT-CORP-MSN-AS-BLOCK, US
   680         284       1903     249  DFN Verein zur Foerderung eines Deutsch
 36914         261         82       3  KENET-AS, KE
  1916         221        176      42  Rede Nacional de Ensino e Pesquisa, BR
   668         203        652     172  DNIC-AS-00668, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  7497         432          409  CSTNET-AS-AP Computer Network Information Cente
  2018         370          299  TENET-1, ZA
 36914         261          258  KENET-AS, KE
 14618         803          203  AMAZON-AES, US
  5786         197          196  UPRENET, PR
  1916         221          179  Rede Nacional de Ensino e Pesquisa, BR
 58647         178          176  KAGAWAU-AS Kagawa University, JP
327687         165          162  RENU, UG
 18558         136          132  NETBLK-RCOEK, US
  8895         136          131  ISU Internet Services Unit ISU, SA

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    394607  UNALLOCATED  104.249.65.0/24          23024  OCDE, US
     33008  UNALLOCATED  162.248.66.0/24          11096  FLORIDANET, US
    394607  UNALLOCATED  216.100.93.0/24          23024  OCDE, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/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:      2152  CSUNET-NW, US
192.31.196.0/24      Origin:       112  RESERVED, ZZ
192.31.196.0/24     Transit:      1103  SURFNET-NL SURFnet, The Netherlands, NL
193.37.39.0/24       Origin:     16509  AMAZON-02, US
193.37.39.0/24      Transit:      2152  CSUNET-NW, US
193.84.26.0/24       Origin:     16509  AMAZON-02, US
193.84.26.0/24      Transit:      2152  CSUNET-NW, US
198.135.168.0/24     Origin:     14618  AMAZON-AES, US
198.135.168.0/24    Transit:     16509  AMAZON-02, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/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        /8:0        /9:1       /10:4       /11:9       /12:29      
/13:36      /14:81      /15:202     /16:2138    /17:501     /18:486     
/19:631     /20:1014    /21:1181    /22:1910    /23:1976    /24:14251   
/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         705        4329  AMAZON-02, US
 14618         263         803  AMAZON-AES, US
 36914         249         261  KENET-AS, KE
  8895         131         136  ISU Internet Services Unit ISU, SA
  8075          68         369  MICROSOFT-CORP-MSN-AS-BLOCK, US
 23024          52         113  OCDE, US
 32440          37          59  LONI, US
327700          34          40  MoRENet, MZ
 28614          32          38  Fundacao Universidade Regional de Blumenau, BR
 46115          32          35  LUTHER, US

Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:3         2:1         3:119       4:2         5:20        6:4      
   8:2        12:1        13:185      14:89       15:128      16:109    
  18:235      23:45       24:3        31:7        34:2        35:14     
  38:9        40:2        41:116      42:10       44:8        45:65     
  46:11       47:1        49:9        50:11       52:872      54:262    
  58:2        59:19       60:4        61:3        62:17       63:42     
  64:149      65:38       66:89       67:65       68:18       69:52     
  70:27       71:48       72:15       74:79       76:48       77:11     
  78:3        79:10       80:13       81:26       82:7        83:6      
  84:8        85:44       86:10       87:2        88:1        89:13     
  91:57       92:4        93:4        94:8        95:2        96:6      
  97:2        98:14       99:79      101:2       102:32      103:305    
 104:118     107:4       108:82      109:11      111:17      113:4      
 114:23      115:1       116:10      117:61      118:32      119:18     
 121:28      122:11      123:8       124:39      125:4       128:87     
 129:53      130:153     131:72      132:60      133:155     134:107    
 135:3       136:213     137:151     138:15      139:18      140:43     
 141:5       142:60      143:35      144:66      145:5       146:131    
 147:68      148:203     149:17      150:51      151:17      152:138    
 153:14      154:30      155:81      156:71      157:30      158:46     
 159:155     160:35      161:47      162:73      163:94      164:22     
 165:57      166:2       167:25      168:174     169:12      170:162    
 171:1       172:12      173:26      174:2       175:27      176:13     
 177:5       178:2       179:13      180:15      181:1       182:1      
 184:3       185:102     186:3       187:17      188:15      189:3      
 190:19      191:13      192:1539    193:313     194:129     195:87     
 196:204     197:168     198:551     199:350     200:340     201:38     
 202:638     203:443     204:395     205:168     206:220     207:201    
 208:118     209:150     210:190     211:14      212:174     213:17     
 214:8       216:177     217:11      218:22      219:5       220:16     
 222:2       223:14     

End of report


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